МНОГОФУНКЦИОНАЛЬНЫЙ КОММУТАТОР ДЛЯ МИЛЛИМЕТРОВОГО ДИАПАЗОНА

Изобретение относится к области радиотехнического приборостроения и может найти применение в устройствах высокочастотных коммутаторов. Технический результат – расширение функциональных возможностей на основе формирования упрощенного коммутатора миллиметрового диапазона, который способен работать как в режиме коммутации одного порта, когда вся входная мощность должна поступать только в один из выходных портов, так и в режиме делителя мощности, когда входная мощность должна делиться между выходными портами, а также уменьшение потерь на высоких частотах и упрощенное исполнение в печатных платах. Для этого многорежимный коммутатор содержит входной порт; первый и второй выходные порты; первое выходное плечо, содержащее первый коммутирующий элемент, выполненный с возможностью изменения импеданса первого выходного плеча; второе выходное плечо, содержащее второй коммутирующий элемент, выполненный с возможностью изменения импеданса второго выходного плеча; и входное плечо, содержащее третий коммутирующий ...

УСТРОЙСТВА ВЫСОКОЧАСТОТНЫХ ТРАКТОВ С МНОЖЕСТВОМ ВХОДОВ И МНОЖЕСТВОМ ВЫХОДОВ И С РАЗНЕСЕНИЕМ, ПРЕДНАЗНАЧЕННЫЕ ДЛЯ МНОГОДИАПАЗОННЫХ МНОГОРЕЖИМНЫХ ПОДСИСТЕМ СВЯЗИ

... 1. Модуль ВЧ-тракта приема, предназначенный для использования в многодиапазонном многорежимном устройстве связи, причем устройство связи имеет множество электрически разделенных антенн, причем упомянутый модуль ВЧ-тракта приема отличается тем, что содержит по меньшей мере, две точки схемы возбуждения, выполненные с возможностью отдельно соединяться, по меньшей мере, с двумя из упомянутого множества антенн, предназначенных для приема сигналов связи в устройстве связи, множество маршрутов сигналов, оперативно соединенных с точками схемы возбуждения, для одновременного приема сигналов связи в множестве диапазонов частот, причем каждый маршрут сигнала имеет фильтр, предназначенный для фильтрации сигналов связи в соответствующем диапазоне частот, и по меньшей мере, один компонент развязки, расположенный в маршрутах сигналов, предназначенный для развязки перекрестных диапазонов, по меньшей мере, между двумя маршрутами сигналов, причем, по меньшей мере, два из упомянутого множества маршрутов сигналов ...

РАДИОСИСТЕМА С УНИВЕРСАЛЬНЫМ СВЯЗНЫМ ИНТЕРФЕЙСОМ

... 1. Радиосистема (1, 12, 19, 33), содержащая радиостанцию (1), имеющую режим передачи и нажимную кнопку (16) включения микрофона (НКВМ) для установки радиостанции в режим передачи, отличающаяся тем, что система дополнительно содержит радиоинтерфейс (6, 19), связанный с радиостанцией, и универсальный связной интерфейс (УСИ) (12), в котором расположена НКВМ (16), причем радиоинтерфейс (6, 19) предназначен для съемной установки упомянутого УСИ (12) и обеспечивает связь между УСИ (12) и радиостанцией (1), когда он установлен в ней. 2. Система по п.1, отличающаяся тем, что содержит множество радиоинтерфейсов (6, 19), в каждый из которых может устанавливаться УСИ (12). 3. Система по п.2, отличающаяся тем, что множество радиоинтерфейсов (6, 19) являются интерфейсами различных типов, характерных для применения и предназначенных для подключения к радиостанциям различных типов и/или для установки в различных местах. 4. Система по любому из пп.1-3, отличающаяся тем, что радиоинтерфейс (6) расположен ...

Schalter für Funksendeempfänger

Sende-/Empfangselement für ein aktives, elektronisch gesteuertes Antennensystem

Sende-/Empfangselement (SE) für ein aktives, elektronisch gesteuertes Antennensystem (ASys) umfassend einen Sendepfad (SP), einen Empfangspfad (EP) sowie einpolige Umschalter (U1, U2, U3) mit einem gemeinsamen Mittelanschluss (UM1, UM2, UM3) und zwei Anschlüssen (UA1_1, UA1_2; UA2_1, UA2_2; UA3_1, UA3_2) zum Umschalten zwischen dem Sendepfad (SP) und dem Empfangspfad (EP), wobei mehrere Amplitudensteller (AS1,...,N) und mehrere Phasensteller (PS1,...,N) zwischen den gemeinsamen Mittelanschlüssen (UM1, UM2) eines ersten und eines zweiten einpoligen Umschalters (U1, U2) angeordnet sind, dadurch gekennzeichnet, dass einpolige Mehrfachwechselschalter (MW1, MW2) mit einem gemeinsamen Mittelanschluss (MMW1, MMW2) und einer Anzahl N von Anschlüssen (A1,...,N, B1,...,N) vorhanden sind, wobei der gemeinsame Mittelanschluß (UM1, UM2) des ersten bzw. zweiten einpoligen Umschalters (UA1, UA2) mit dem gemeinsamen Mittelanschluss (MMW1, MMW2) eines ersten bzw. eines zweiten einpoligen Mehrfachwechselschalters ...

HALBLEITERSCHALTER FUER MIKROWELLEN.

Transceiver signal processor for digital, cordless telephone

The pressor has a transmitter for conversion and transmission of a signal as a radio wave via an aerial input, and a receiver for connecting the signal from the aerial input for processing. A frequency synthesiser has a first PLL (120) for channel conversion, during which the loop frequency of the PLL is not switched over. A received second IF is used for setting a corresp. offset at 0 Hz. A second PLL (130) provides high oscillation change-over between the transmit and reception frequency by setting the output frequency of the first PLL as a reference signal.

Mikrophonverstaerker

Fahrzeugkommunikationssystem, fahrzeugmontiertes Gerät und tragbares Gerät

Ein Fahrzeugkommunikationssystem umfasst: ein fahrzeugmontiertes Gerät und ein tragbares Gerät. Das tragbare Gerät umfasst ferner eine Rauscherfassungseinheit, welche ein Rauschen erfasst, und das fahrzeugmontierte Gerät umfasst eine Übertragungsfrequenzumschalteinheit, welche eine Übertragungsfrequenz eines Antwortanfragesignal einstellt, welches durch eine Fahrzeugmontiertes-Gerät-Übertragungseinheit übertragen wird. Das tragbare Gerät überträgt ein Wiederholungsübertragungsanfragesignal, welches anfordert, dass das Antwortanfragesignal erneut übertragen wird, durch die Tragbares-Gerät-Übertragungseinheit, für den Fall, dass das tragbare Gerät das Rauschen erfasst und dass das Antwortanfragesignal nicht durch eine Tragbares-Gerät-Empfangseinheit empfangen werden kann. Das fahrzeugmontierte Gerät stellt die Übertragungsfrequenz mit der Übertragungsfrequenzumschalteinheit ein und überträgt das Antwortanfragesignal erneut mit der Fahrzeugmontiertes-Gerät-Übertragungseinheit, für den Fall ...

HOCHFREQUENZ-SENDER-EMPFAENGER

Mobile telecommunication transmission apparatus has very reduced circuit requirement, comprising aerial, transmission and reception devices for handling signals in different frequency ranges

The mobile telecommunication transmission apparatus (1) has a very reduced circuit requirement and comprises an aerial (5), transmission and reception devices (10,15,20,25,30,35) for transmission and reception of signals in different frequency ranges. A circulator (55) with three gates (60,65,70) are provided as fork connection for first and second frequency ranges. A first gate (60) of the circulator is connected with the transmission devices of both frequency ranges. A second gate (65) of the circulator is connected with the reception devices of the two frequency ranges. A third gate (70) of the circulator is connected with the aerial (5).

Broadband power amplifier systems and methods

Systems, circuits and methods related to low-loss bypass of a radio-frequency filter or diplexer

APPARATUS FOR FILTERING AND AMPLIFYING AN OSCILLATOR

Modulators

A modulator for digital modulation is described to produce a modulated output from a voltage controlled oscillator in a phase locked loop during transmission of a random modulating input. The input voltage is applied to a coupling capacitor and when transmission ceases, the state of charge on the capacitor will not change because of a biasing circuit which comprises two resistors fed by a tri-state buffer which holds the input terminal of the capacitor at the average level between logic zero and logic one when no modulation is applied.

Transceiver antenna coupling circuit

Communication apparatus with switch configurable as push to talk switch or on/off hook switch

A communication apparatus such as a portable radio transceiver 110 has a switch 154 automatically configurable for a simplex or duplex communication mode. In simplex mode the switch acts as a momentary push-to-talk (PTT) switch enabling continuous transmission while continuously engaged. In duplex mode the switch acts as an on/off hook switch enabling and disabling continuous transmission by momentary engagement. The switch 154 may be mounted in a headset 150 for hands free operation. The radio monitors incoming and outgoing calls and automatically selects the mode and configures the switch accordingly.

RADIO TRANSMITTING AND RECEIVING APPARATUS

Power supply switching circuit for a compact portable telephone set

Antenna switch

Detection of coexistence in devices using multiple wireless communication technologies

Methods for wireless coexistence management (such as interference prevention) at a first device are described, involving the steps of monitoring signal samples of communications in accordance with first and second independent wireless communication technologies (such as Wi-Fi (RTM) and Bluetooth (RTM), respectively) over a predetermined time period, between the first device and a peer device; determining whether the monitored communications indicate the probable existence of a wireless coexistence scenario, in which the first device is communicating with a single peer device in accordance with both the first and second wireless communication technologies, and if the probable existence of the wireless coexistence scenario is determined, triggering a wireless coexistence management process, such as arbitration scheme of IEEE 802.15.2-2003. Methods for detecting a wireless coexistence are also described, involving monitoring the validity of Rx and Tx/Rx signals of the first and second wireless ...

On chip transmit and receive filtering

This application relates to transmit/receive switching in an integrated circuit chip for a transceiver. The chip includes a chip pin 201 suitable for connection to a common antenna 803. A signal path from the chip pin 206 divides into a receive signal path 207 coupled to an input unit 202 and a transmit signal path 208 coupled to an output unit 203. A first filter 204 is provided on the receive path and a second filter 205 on the transmit path. The transmit and receive paths also have respective switches 210, 212, which selectively couple the respective paths to ground. The switches are controllable so as to isolate the input unit from the output unit when the integrated circuit chip is transmitting a radio frequency signal, and to isolate the output unit from the input unit when the integrated circuit chip is receiving a radio frequency signal. The first and second filters are preferably LC circuits, and may include variable capacitors which can be configured so that each of the filters ...

Radio transceiver

RADIO FREQUENCY CIRCUIT FOR A TIME DIVISION MULTIPLE ACCESS SYSTEM

systems methods and apparatuses for high power complementary metal oxide semconductor (cmos) antenna switches

Remote switch in the universal communications interface

CIRCUIT ARRANGEMENT AND SIMPLEX RADIO TRANSCEIVER FOR INCREASING THE OPERATIONAL SAFETY OF RADIO TRAFFIC

... 1480418 Radio signalling BUDAPESTI RADIOTECHNIKAI GYAR 18 Oct 1974 [22 Oct 1973] 45187/74 Heading H4L A transceiver which is provided with sendreceive switching and a common aerial and in which the receiver includes an inhibit (squelch) circuit, is provided with a comparator responsive to the squelch circuit and coupled to a controlled switch to prevent the operation of the transmitter in the presence of received signals, above a predetermined threshold value set on a potentiometer, and provided as one input to the comparator (differential amplifier) receiving as its other input, an output signal from the squelch circuit, the comparator being coupled to the controlled switch itself controlling transmission. By this means a third station is prevented from entering an existing radio connection between two stations in systems wherein mobile stations communicate via a base station on a common carrier frequency.

ANTENNA SWITCH STRUCTURE FOR MOBILES A TERMINAL IN A WIRELESS COMMUNICATION SYSTEM

GERAET ZUR MARKIERUNG UND ORTUNG VON NICHT SICHTBAREN, BEWEGLICHEN KOERPERN, INSBESONDERE VERSCHUETTETEN PERSONEN

TERMINAL WITH VARIABLE DUPLEX ABILITY

COMMUNICATION TERMINAL WITH SEVERAL MODES OF OPERATION AND PROCEDURE FOR THE IMPLEMENTATION OF COMMUNICATION WITH SEVERAL MODES OF OPERATION

PROCEDURE AND COMMUNICATION DEVICE FOR THE TRANSMISSION OF MESSAGES

GROUND RADIO END RECEIVER

RADIO END RECEIVER

Radio frequency loopback for transceivers

Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.

TRANSCEIVER SWITCHING

Electronic device and antenna switching method thereof

Methods and devices for antenna switching are provided. A wireless signal is transmitted and received through a specific antenna module among a plurality of antenna modules. Status information about each of one or more other antenna modules among the plurality of antenna modules is acquired, when a temperature of the specific antenna module exceeds a predetermined value. The temperature of the specific antenna module is measured through a respective sensor module of a plurality of sensor modules. Each sensor module of the plurality of sensor modules is contained in or disposed adjacent to a respective antenna module of the plurality of antenna modules. The specific antenna module is switched to an antenna module selected from among the one or more other antenna modules, based on the acquired status information.

Multiway switch, radio frequency system, and wireless communication device

A multiway switch, a radio frequency system, and a wireless communication system are provided. The multiway switch includes n T ports and four P ports. Each T port is coupled with all of the four P ports, where n is an integer and 4≤n. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device to implement a preset function of the electronic device. The antenna system includes four antennas corresponding to the four P ports. The preset function is a function of transmitting an SRS through the four antennas in turn.

Multiway switch, radio frequency system, and wireless communication device

A multiway switch, a radio frequency system, and a wireless communication device are provided. The multiway switch includes four T ports and 2 ...

Multi-way switch, radio frequency system, and wireless communication device

A multi-way switch, a radio frequency system, and a wireless communication device are provided. The multi-way switch includes six T ports and four P ports. The six T ports include two first T ports and each of the two first T ports is coupled with all of the four P ports. The two first T ports support only a transmission function. The multi-way switch is configured to be coupled with a radio frequency circuit and an antenna system of a wireless communication device operable in a dual-frequency dual-transmit mode. The antenna system includes four antennas corresponding to the four P ports.

TRANSMIT AND RECEIVE ANTENNA SWITCH

USE CONTROLLER FOR A WIRELESS COMMUNICATION DEVICE

Wearable wireless communication device and communication group setting method using the same

Discussed is a wearable wireless communication device that can set a communication group with other wireless communication devices within a limited range by converting and sending out communication group setting information into a dual tone multi-frequency (DTMF) signal or by transmitting communication group setting information including a certain received signal strength indicator (RSSI) reference value and a communication group setting method using the same.

BROADBAND DISTRIBUTED ANTENNA SYSTEM WITH NON-DUPLEXER ISOLATOR SUB-SYSTEM

Abstract Certain aspects and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non duplexer isolator sub-system can include an active mitigation sub-system.

BROADBAND DISTRIBUTED ANTENNA SYSTEM WITH NON-DUPLEXER ISOLATOR SUB-SYSTEM

Abstract Certain aspects and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non duplexer isolator sub-system can include an active mitigation sub-system.

A method for controlling a radio unit

Antenna matching circuit switching system in TDMA portable telephone

System and method for providing push-to-talk feature for wireless communication systems

Power supply for portable devices

Method and device in a mobile station

NOISE CANCELING MICROPHONE WITH ACOUSTICALLY TUNED PORTS

Certain embodiments of a noise canceling microphone with acoustically tuned ports are disclosed herein. In one aspect of the invention, the noise canceling microphone may comprise a housing, a transducer for converting received energy received into electrical signals, where the transducer is located in the housing, a front and rear sound pathways to a front and rear sound openings in the transducer, where the front and rear sound pathways may be located on opposite sides of the housing and may be displaced 180 degrees off a vertical axis. The noise canceling microphone may further comprising a boom for supporting the noise canceling microphone, where the boom may be deformed to place the noise canceling microphone near the mouth of the user. For example, the boom may be deformed to place the noise canceling microphone at least ten millimeters away from the edge of the mouth of the user.

BATTERY-POWERED MOBILE COMMUNICATIONS APPARATUS HAVING TRANSMITTER RESET FUNCTION

A mobile communications apparatus is disclosed. It includes a load circuit to which a DC voltage is supplied from a DC power source. A reset voltage detector generates a reset signal for turning off the load circuit when the DC voltage falls below a predetermined level and a reset release signal turns on the load circuit when the DC voltage returns to or above the predetermined level. Also included is circuitry for detecting whether or not a change in the DC voltage is an instantaneous drop, circuitry for measuring the lapse of time from the actuation of the load circuit till the generation of the reset signal and circuitry for comparing, when the instantaneous drop detector means has determined the change to be an instantaneous drop, the measured lapse of time with a predetermined length of time. If the measured time is longer than the predetermined time, the actuated state of the load circuit is retained, but if the reverse is true the load circuit is turned off. The apparatus can operate ...

DYNAMIC TIME ADJUSTMENT METHOD, APPARATUS, AND SYSTEM

Disclosed is a dynamic time adjustment method, apparatus and system, which belong to the field of network communications. The method comprises: determining the length of a new downlink transmission interval; updating the length of uplink and downlink transmission intervals according to the determined length of the new downlink transmission interval; and then remaining silent, transmitting idle symbols or transmitting other known content symbols in a transition area until all user-side devices have completed the updating of the length of the uplink and downlink transmission intervals, wherein the transition area is an area, larger than a currently used downlink transmission interval, of the new downlink transmission interval, or is an area, larger than a currently used uplink transmission interval, of a new uplink transmission interval, and remaining silent, transmitting idle symbols or transmitting other known content symbols in these areas to avoid affecting normal data transmission.

DUAL-MODE BASE STATION

A base station including at least a transceiver switch is provided enabling the base station to transmit and receive data in either FDD or TDD mode from an antenna. The base station may be provided with a synthesiser which can be retuned from FDD to TDD mode or alternatively, an FDD and a TDD synthesiser and a switch enabling the transmitter and receiver of the base station to process FDD or TDD mode data respectively.

TRACK CIRCUIT TRANSCEIVER

Transceivers may be used in track circuits. A transceiver may comprise an H-bridge circuit comprising at least four switches. A control unit in communication with the H-bridge circuit may be constructed and arranged to selectively drive the at least four switches to selectively cause the H-bridge circuit to function as a transmitter or a receiver. A power supply terminal in communication with the H-bridge circuit may be constructed and arranged to connect to a power supply. A track interface terminal in communication with the H-bridge circuit may be constructed and arranged to connect to a track interface cable so that the H-bridge circuit is capable of transmitting signals to and/or receiving signals from the track interface cable.

GROUND RADIO TRANSMITTING AND RECEIVING APPARATUS

... 2137166 9326098 PCTABS00028 Simultaneous transmitter operation in a radio network is prevented by monitoring the signal received at the control position from the transmitter of the apparatus, this signal being delayed by the passage down land lines connecting the control position to its transmission antenna and the receiver to its control position. If a signal is received within a known time period from the time of commencement of a transmit action then it is assumed to be a signal from a remote transmitter and the operation of the local transmitter is aborted to prevent interference. The system is particuarly useful where land lines and consequent time delays are present between the control position and the transmitter and the receiver and the control position.

Gerät für hochfrequenten Wechselverkehr.

Magnetfeldröhrenanordnung zum Senden und Empfangen gerichteter Schwingungen des Mikrowellengebietes.

Sende-Empfangsschaltung für Kurzwellen.

Sende-Empfangsschaltung.

Verfahren zur Durchführung eines mit Empfangsbetrieb auf gleicher Welle abwechselnden Sendebetriebes.

Sende-Empfangsschaltung für Kurzwellen.

Verfahren zur Durchführung eines drahtlosen Sende- und Empfangsbetriebes auf einer Welle.

Ultrakurzwellengerät mit veränderbarer Wellenlänge.

Sender-Empfänger für Wechselverkehr, der auf verschiedene Übertragungskanäle abstimmbar ist.

VERFAHREN ZUR BETRIEBSARTUMSCHALTUNG EINES SENDEEMPFAENGERS UND SENDEEMPFAENGER ZUR AUSFUEHRUNG DES VERFAHRENS.

SPRECHFUNKGERAET.

MECHANISM FOR THE AUTOMATIC REVERSAL OF THE MODE OF OPERATION OF A RECORDING DEVICE, A TRANSMITTER OR A TRANSCEIVER.

Coexistence of DIFFERENTIAL CAPACITIVE antenna ports in wireless CAPACITIVE signal reception and transmission systems and / or capacitive WIRELESS TRANSMISSION OF ENERGY SUPPLY

RF switches

Switch circuit and composite high-frequency part

Wireless communication device

Method and apparatus for determining an end of a subframe in a TDD system

High frequency circuit, high frequency circuit components and communication apparatus using the same

A high frequency circuit comprising an antenna; a high frequency switch circuit for switching three connections with the transmitting side circuit of a first communication system, the receiving side circuit of the first communication system and with the transmitting/receiving circuit of a second communication system; a first bandpass filter disposed between the antenna and the high frequency switch circuit; and a balance/imbalance converting circuit disposed between the receiving side circuit of the first communication system and the high frequency switch circuit.

Phase array transceiver and transmitting and receiving circuit

Use controlling system for a wireless communication device

A system for the blocking of transceptions of a wireless communication device situated within an area or space designated, for purposes of safety or security, for protection from selectable electromagnetic frequencies. The system, more particularly, includes elements (10,12,14,16) for detecting and identifying the selected frequencies transmitted from the wireless device (8); a subsystem for blocking the frequencies which are received (14) by the device; elements for electronic communication between the detecting elements (16) and the blocking elements (18,20); and an actuator for the blockingelements. The system must be situated within sufficient physical relationship to the wireless communication device to permit reception of frequencies generated by it and the transmission (22), without use of unacceptable power levels, of blocking noise.

ACTIVE DUPLEXER ULTRA HIGH FREQUENCY ORDERS

SYSTEME DE CONTROLE AUTOMATIQUE D'EMISSION OU D'ENREGISTREMENT OU D'EMISSION ET DE RECEPTION

LA PRESENTE INVENTION CONCERNE UN SYSTEME DE CONTROLE AUTOMATIQUE D'EMISSION OU D'ENREGISTREMENT OU D'EMISSION ET DE RECEPTION. SELON L'INVENTION, ON PREVOIT UN MICROPHONE 1 DU TYPE CAPTEUR DES VIBRATIONS QUI CAPTE DES SIGNAUX VOCAUX CONDUITS PAR LES OS, UN CIRCUIT PRINCIPAL 2 PERMETTANT D'ACCOMPLIR L'EMISSION OU L'ENREGISTREMENT APRES AMPLIFICATION DU SIGNAL DE SORTIE DU MICROPHONE 1 PAR UN AMPLIFICATEUR 3, ET UN CIRCUIT DE COMMUTATION SERVANT A OUVRIR ET FERMER LE CIRCUIT PRINCIPAL 2 EN REPONSE AUX SIGNAUX DE COMMANDE RECUS. L'INVENTION S'APPLIQUE NOTAMMENT A DES EMETTEURS, ENREGISTREURS ET DISPOSITIFS D'EMISSION ET DE RECEPTION.

Telegraphic transmitter-receiver

POST TRANSMITTER-RECEIVER RADIO OPERATOR SEVERAL CHANNELS RADIO FREQUENCY FOR THE TRANSMISSION UNDER DIGITAL FORM OF THE WORD

Assembly transmitter-receiver for short waves

Device of correction of nonlinearity of an amplifier of exit in a system of transmissionde given by radio waves

ACTIVE DUPLEXER ULTRA HIGH FREQUENCY ORDERS

L'invention concerne un duplexeur actif hyperfréquence commandé. Selon l'invention, ledit duplexeur comprend deux amplificateurs distribués (31, 32) et des moyens pour les commander. Chacun des deux amplificateurs distribués (31, 32) comprend une ligne d'entrée (33, 36) et une ligne de sortie (34, 37), la ligne de sortie (34) du premier amplificateur distribué (31) étant commune à la ligne d'entrée (36) du deuxième amplificateur distribué (32). Une extrémité de la ligne d'entrée (33) du premier amplificateur distribué (31) forme le port d'entrée (44), une extrémité de la ligne de sortie (37) du deuxième amplificateur distribué (32) forme le port de sortie (45) et une extrémité de la ligne commune aux deux amplificateurs distribués (31, 32) forme le port d'entrée/sortie (43). Les amplificateurs distribués (31, 32) sont commandés à l'état passant ou à l'état bloqué en opposition l'un de l'autre en fonction des ports à faire communiquer. L'invention présente pour principal avantage qu'elle ...

EMETTEUR/RECEPTEUR HAS CIRCUITS Of INTERNAL INTERFACES BIDIRECTIONAL

Des émetteurs/ récepteurs à circuits 24, 25, 26, 27 d'interfaces internes bidirectionnels, qui peuvent être raccordés à un circuit 39 de bande de base, l'émetteur/ récepteur pouvant être commuté par le circuit 39 de bande de base entre un fonctionnement en émission et un fonctionnement en réception, au moins un dispositif de modulation en quadrature, qui est relié pendant le fonctionnement en émission aux circuits d'interfaces, et comportant au moins un dispositif de démodulation en quadrature qui est relié aux circuits d'interfaces pendant le fonctionnement en réception.

커플러 내장형 고주파 스위치 회로 및 장치

... 본 발명의 일 실시 예에 따른 커플러 내장형 고주파 스위치 회로는 적어도 하나의 제1 신호포트와 공통 포트 사이에 접속되어 제1 밴드신호를 스위칭하는 적어도 하나의 제1 밴드 스위치 회로를 포함하는 고주파 스위치; 및 상기 고주파 스위치의 공통 포트와 안테나포트 사이에 형성된 신호배선에 인접해서 배치되어, 상기 신호배선과 제1 신호 커플링을 형성하는 제1 커플링 배선을 포함하는 커플러; 를 포함하고, 상기 제1 커플링 배선에 의한 공진주파수는 상기 제1 커플링 배선에 의한 인덕턴스와 상기 고주파 스위치의 커패시턴스에 의해 결정된다.

DEVICE AND METHOD FOR CALLING WHILE WATCHING TV IN MOBILE PHONE

HUMAN BODY COMMUNICATION DEVICE AND OPERATING METHOD OF THE SAME

스위칭가능한 안테나 어레이

... 장치는 임피던스 회로(404) 및 임피던스 회로(404)에 결합된 복수의 인덕터들(430, 432, 434, 436)을 포함한다. 복수의 인덕터들 각각은 복수의 스위치들(sw1-sw4) 중 대응하는 스위치와 병렬로 결합된다.

트랜시버 및 트랜시버의 자체-간섭을 감소시키기 위한 방법

... 트랜시버(1000)는 무선 송신 채널을 인터페이싱하도록 구성되고, 전송 신호(202)를 수신하기 위한 인터페이스(110) 및 수신 신호(106)를 제공하기 위한 인터페이스를 포함하는 안테나 장치(100)를 포함한다. 트랜시버는 메인 송신기(200), 아날로그 도메인 필터(300; 300'; 300''; 300'''), 보조 송신기(400), 무선 주파수 간섭 제거 스테이지(500), 메인 수신기(600), 피드백 수신기(700) 및 디지털 신호 동작들을 수행하도록 구성되는 프로세서(800; 800')를 포함한다. 트랜시버(1000)는 무선 주파수 도메인 및 디지털 도메인에서 수신 신호에 대한 간섭 제거를 수행하도록 구성된다.

DEVICE AND METHOD RELATED TO INTERFACE FOR RADIO FREQUENCY MODULE

Disclosed are a system, an apparatus, and a method for providing signal conditioning circuits configured to adjust RF signals, and an interface communicating with the signal conditioning circuits. The interface includes M number of inputs and N number of outputs. Each quantity of the M and the N is greater than one. Each of at least two of the M inputs of the interface is coupled to a separate output through a separate switch. COPYRIGHT KIPO 2017 ...

SWITCHED MULTIPLEXER METHOD TO COMBINE MULTIPLE BROADBAND RF SOURCES

Provided is a switched multiplexer configured to combine first, second, third and fourth signal paths each covering a sub-octave in a frequency range of from about 2 to about 18 GHz and to remove transmitter harmonics of an input signal to create a stable output impedance across the frequency range. The switched multiplexer comprises a transmit switch, a first diplexer and a power combiner. The first diplexer is connected in parallel with a second diplexer. The first diplexer comprises first and second signal paths. The second diplexer comprises third and fourth signal paths. Each one of the first, second and third signal paths include respective ones of the first switch, a second switch and a third switch, each interconnected to respective ones of a first signal path high-pass filter, second signal path low-pass filter and third signal path low-pass filter by respective ones of a first, second and third filter. Each one of the first, second and third filters have a respective filter capability ...

SWITCH CIRCUIT AND COMPOSITE HIGH-FREQUENCY PART

A switch circuit for selectively switching connection of an antenna side circuit with a reception circuit and a transmission circuit of two communication systems one of which has a reception frequency band partially overlapped with a transmission frequency of the other. The switch circuit includes (a) a first switch unit for switching connection of the antenna side circuit with the transmission circuit side of the first and the second communication systems and the reception circuit side of the first and the second communication system and (b) a second switch unit connected between the first switch unit and the reception circuit of the first and the second communication system for switching connection of the antenna side circuit with the reception circuit of the first and the second communication system. (c) The transmission circuit side of the first and the second communication system of the first switch unit is connected to a transmission circuit shared by the first and the second communication ...

ELECTRONIC DEVICE FOR TRANSMITTING OR RECEIVING SIGNAL AND METHOD THEREFOR

An electronic device is disclosed. The electronic device includes a communication circuit including a plurality of ports, each of which transmits a signal in at least one frequency band, and transmitting or receiving the signal in the at least one frequency band and a processor set to acquire frequency band information representing the at least one frequency band and situation information representing the state of the electronic device and to determine the port to be used for the at least one frequency band among the plurality of ports. Besides, various embodiments grasped through the present specification are possible. Accordingly, the present invention can determine an RF port suitable for a communication environment. COPYRIGHT KIPO 2018 (100) Electric device (110) Processor (120) Memory (130) Communication circuit ...

sistema de antena distribuída

Electronic switch and communication device including such a switch

Switch including a terminal of a first type and at least two terminals of a second type, and a number of circuits capable of ensuring exclusive connection of one of the terminals of the second type to the terminal of the first type as a function of a set of control orders wherein the terminal of the first type is connected to a common point by a first circuit; each terminal of the second type is connected to the common point by a second circuit, with each second circuit including a portion that is magnetically coupled to the first circuit, a static switch mounted in parallel with the portion and capable of being controlled in the “off” state in order to connect the terminal of the first type to the terminal of the second type associated with the second circuit in question.

Switching system with linearizing circuit

A transistor-based switch is coupled to a replica circuit that includes transistor circuitry similar to that of the switch. The replica circuit biases a switched transistor to promote linear operation of the switch.

Methods for adjusting radio-frequency circuitry to mitigate interference effects

An electronic device may transmit and receive wireless signals using wireless circuitry that is controlled by control circuitry. The wireless circuitry may include adjustable components such as adjustable antenna structures, adjustable front end circuitry, and adjustable transceiver circuitry. During characterization operations, the electronic device may be tested to identify operating settings for the wireless circuitry that lead to potential wireless interference between aggressor transmitters and victim receivers. The control circuitry can adjust the wireless circuitry to mitigate the effects of interference based on settings identified during characterization operations or real time signal quality measurements.

Land mobile radio and adapter for use with standard mobile phone headset

An adapter ( 400 ) for a portable land mobile radio (LMR) transceiver system ( 414 ) where the LMR includes a push-to-talk (PTT) transmitter control system. The adapter includes a tip-ring-sleeve (TRS) type interface connector ( 402 ) configured to accept a plug ( 101 ) from a standard mobile phone headset. An adapter circuit ( 401 ) is configured to detect a momentary actuation of an answer/end switch ( 201 ) of a standard mobile phone headset when a TRS plug of the standard mobile phone headset is inserted in the interface connector ( 402 ). The adapter circuit alternately latches a PTT input of the LMR transmitter control system in either a transmit active state, or a transmit inactive state, in response to actuation of the answer/end switch of the mobile phone handset.

Apparatus and methods for electronic amplification

Apparatus and methods for electronic amplification are disclosed herein. In certain implementations, an amplifier is provided for amplifying a RF signal, and the amplifier includes a first transistor and a second transistor electrically connected in a Darlington configuration. The first and second transistors can be, for example, bipolar or field effect transistors and the first transistor can amplify an input signal and provide the amplified input signal to the second transistor. The first and second transistors are electrically connected to a power low node such as a ground node through first and second bias circuits, respectively. In certain implementations, the first transistor includes an inductor disposed in the path from the first transistor to the power low voltage. By including the inductor in the path from the first transistor to the ground node, the third order distortion of the amplifier can be improved.

Frontend module for time division duplex (tdd) carrier aggregation

A frontend module for Time Division Duplex (TDD) with Carrier Aggregation (CA), wherein the frontend module reuses the band selection filters for the aggregated bands and provides switched connections to antenna and transmitter/receiver according to the Uplink (UL)/Downlink (DL) configuration. The use of switches on both the antenna side and the transmitter/receiver side of the frontend module enables the reuse of the band selection filters. The frontend module according to the present invention reduces the number of required filters to only one filter for each TDD-CA Component Carrier (CC) band. Thus, the frontend module avoids unnecessary band selection filters, and thereby also controls the cost of implementation of frontend modules in wireless units operating in the TDD-CA mode.

Reduced clock feed-through systems, methods and apparatus

Implementations of radio frequency switch controllers within the scope of the appended claims are configured to reduce the impact of the clock signal induced spurs. In particular, implementations of switch controllers described herein include a poly-phase clocking scheme, as opposed to a single phase to clock the charge pump stages of an negative voltage generator. In some implementations poly-phase clocking schemes reduce the clock signal induced spurs and may preclude the need for additional on-chip or off-chip decoupling capacitors that add to the cost and physical size of a complete front end module solution.

Transmit-Receive Front End

The present invention discloses a transmit-receive (TR) front end. The TR front end includes a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled between the transformer and the LNA. The LNA is single ended and there is no transformer between the LNA and the TR switch.

System and method for controlling a wireless device

A method is provided for controlling operation of a wireless device, including: receiving an initial incoming signal from a remote device in a first operational mode, the initial incoming signal including information related to an initial remaining battery power in the remote device; determining that a second operational mode will be a first possible mode if the initial remaining battery power in the remote device is within a first power range; determining that the second operational mode will be a second possible mode if the initial remaining battery power in the remote device is within a second power range; and transmitting instructions to the remote device in the first operational mode to transmit and receive in the second operational mode.

METHOD FOR SELECTING STATE OF A RECONFIGURABLE ANTENNA IN A COMMUNICATION SYSTEM VIA MACHINE LEARNING

A method for selecting the state of a reconfigurable antenna installed at either the receiver or transmitter of a communication system is provided. The proposed method uses online learning algorithm based on the theory of multi-armed bandit to perform antenna state selection. The selection technique utilizes the Post-Processing Signal-to-Noise Ratio (PPSNR) as a reward metric and maximizes the long-term average reward over time. The performance of the learning based selection technique is empirically evaluated using wireless channel data. The data is collected in an indoor environment using a 2×2 MIMO OFDM system employing highly directional metamaterial Reconfigurable Leaky Wave Antennas. the learning based selection technique shows performance improvements in terms of average PPSNR and regret over conventional heuristic policies. 1. A method of selecting an antenna array state for a multi-element reconfigurable transmitter and/or receiver antenna , comprising the steps of:a processor executing a learning algorithm that optimizes unknown signal to noise ratios of possible signal paths between at least one reconfigurable transmitter antenna and at least one reconfigurable receiver antenna over time over different antenna array states of said at least one reconfigurable transmitter antenna and said at least one reconfigurable receiver antenna; andthe processor setting the antenna array configuration for the transmitter and/or a receiver antenna based at least in part on the antenna array states determined by said learning algorithm to lead to optimized signal to noise ratios between said at least one reconfigurable transmitter antenna and said at least one reconfigurable receiver antenna over time.2. The method of claim 1 , wherein executing the learning algorithm includes formulating selection of an antenna array state as a multi-armed bandit problem for learning the unknown signal to noise ratios of said possible signal paths so as to maximize signal to noise ratio ...

FILTER BLOCK AND A SIGNAL TRANSCEIVER COMPRISING SUCH A FILTER BLOCK

A filter block comprising 1. A filter block comprising; a first signal splitter having a first input port and a first output port;', 'a second signal splitter having a first input port and a first output port;', 'each of the first and second splitters having first and second connection ports;', 'the two first connection ports being connected together by a first signal path comprising a first filter;', 'the two second connection ports being connected together by a second signal path comprising a second filter; and', 'the first and second signal paths each further comprising a transformer connected between the respective filter and one of the first and second signal splitters., 'a hybrid filter, the hybrid filter comprising;'}2. A filter block as claimed in claim 1 , wherein the first and second signal splitters are 3 dB hybrids.3. A filter block as claimed in claim 1 , wherein the first and second filters are identical.4. A filter block as claimed in claim 1 , wherein the first and second filters are different from each other.5. A filter block as claimed in claim 1 , wherein each of the first and second filters is at least one of a low pass filter claim 1 , a high pass filter claim 1 , a band stop filter claim 1 , or band pass filter.6. A filter block as claimed in claim 5 , wherein the first and second filters are band pass filters.7. A filter block as claimed in claim 1 , wherein the two transformers are identical.8. A filter block as claimed in claim 1 , wherein a turns ratio of each of the transformers is 1:n claim 1 , and wherein n ranges from 0.1 to 10.9. A filter block as claimed in claim 8 , wherein n is substantially sqrt(2)+1.10. A filter block as claimed in claim 8 , wherein n is substantially sqrt(2)−1.11. A filter block as claimed in claim 1 , wherein each transformer is arranged between the first signal splitter and the respective filter.12. A filter block as claimed in claim 1 , wherein each transformer is arranged between the second signal splitter ...

COMMUNICATION SYSTEMS WITH ENHANCED ISOLATION PROVISION AND OPTIMIZED IMPEDANCE MATCHING

A communication system has multiple paths including one or more Tx paths for processing Tx signals and one or more Rx paths for processing Rx signals, one or more PAs coupled respectively to the one or more Tx paths for amplifying the Tx signals, one or more LNAs coupled respectively to the one or more Rx paths for amplifying the Rx signals, one or more Tx filters coupled respectively to the one or more Tx paths for filtering the Tx signals, one or more Rx filters coupled respectively to the one or more Rx paths for filtering the Rx signals, and an antenna comprising multiple feeds coupled to the multiple paths, respectively, to provide physical separation of the multiple paths from each other. Physical separation among the multiple paths and impedance matching provides isolation among the multiple paths, and relaxes rejection considerations on the filters. 1. A communication system comprising:a plurality of paths comprising one or more first paths for processing first signals and one or more second paths for processing second signals;one or more power amplifiers (PAs) coupled respectively to the one or more first paths for amplifying the first signals;one or more low noise amplifiers (LNAs) coupled respectively to the one or more second paths for amplifying the second signals;one or more first filter modules coupled respectively to the one or more first paths for filtering the first signals;one or more second filter modules coupled respectively to the one or more second paths for filtering the second signals; andan antenna comprising a plurality of feeds coupled to the plurality of paths, respectively, to provide physical separation of the plurality of paths from each other, the antenna being configured to provide impedance matching for each of the plurality of paths, wherein the antenna transmits first signals and receives second signals,whereinthe physical separation of the plurality of paths and the impedance matching for each of the plurality of paths provide ...

COMMUNICATION TERMINAL HAVING TDD SWITCH WITH ISOLATING FUNCTION AND DRIVING METHOD THEREOF

A communication terminal and a driving method thereof are provided. The driving method of a communication terminal includes: forming a transmitting path and an absorption path by controlling a time division duplex (TDD) switch in a transmitting mode to isolate the transmitting path and the receiving path from an absorption path, the transmitting path transmitting a transmitting signal in a wireless scheme, and the absorption path diverged from the transmitting path through a circulator of the TDD switch to block a reflecting signal in the transmitting signal reversely transferred to the transmitting path; processing the transmitting signal through the transmitting path. Because a TDD switch has an isolation function, insertion loss in a transmitting path may be suppressed. 1. A communication terminal comprising:an antenna transmitting and receiving a transmitting signal and a receiving signal in a wireless scheme, respectively;a transmitter processing and transmitting the transmitting signal to the antenna;a receiver receiving and processing the receiving signal from the antenna; anda transceive switch disposed between the transmitter and the receiver, and blocking electric connection between the transmitter and the receiver,wherein the transceive switch forming a transmitting path between the transmitter and the antenna in a transmitting mode, includes a circulator diverging an absorption path for blocking a reflecting signal in the transmitting signal reversely transferring to the transmitting path from the transmitting path, and forms a receiving path connecting the antenna, the circulator, and the receiver in a receiving mode.2. The communication terminal of claim 1 , wherein the transceive switch comprises:a transmitting matched switch circuit inactivated in the transmitting mode for controlling the circulator to absorb the reflecting signal, but activated in the receiving mode for controlling the circulator to cut-off introduction of the receiving signal;a ...

TRANSCEIVER WITH PLURAL SPACE HOPPING ARRAY ANTENNAS AND METHODS FOR USE THEREWITH

A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array. 1. A wireless transceiver comprising:a plurality of antennas, that transmit an outbound RF signal containing outbound data to at least one remote transceiver and that receive an inbound RF signal containing inbound data from the at least one remote transceiver, wherein the plurality of antennas is configurable based on a control signal;an antenna configuration controller, coupled to the plurality of antennas, that generates the control signal to configure the plurality of antennas to hop among a plurality of radiation patterns based on a hopping sequence; andan RF transceiver section, coupled to the plurality of antennas, that generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal.2. The wireless transceiver of wherein the antenna configuration controller receives feedback data corresponding to each of the plurality of radiation patterns and updates the plurality of radiation patterns based on the feedback data.3. The wireless transceiver of wherein the antenna configuration controller updates the plurality of ...

HIGH-DEFINITION MULTIMEDIA INTERFACE DATA TRANSCEIVING APPARATUS

A high-definition multimedia interface (HDMI) data transceiving apparatus is disclosed. The HDMI data transceiving apparatus includes a data receiver and a data transmitter. The data transmitter includes a first impedance-providing device and a second impedance-providing device. The data transmitter has a first data transmission terminal and a second data transmission terminal. The first data transmission terminal and the second data transmission terminal are coupled to the data receiver through a first transmission line and a second transmission line, respectively. The data transmitter respectively transmits first data and second data to the data receiver. The first impedance-providing device and the second impedance-providing device absorb a reflected wave generated by the HDMI data transceiving apparatus when the first data and the second data are transmitted. 1. A high-definition multimedia interface (HDMI) data transceiving apparatus comprising:a data receiver; and a first impedance-providing device, having a first terminal and a second terminal, wherein the first terminal of the first impedance-providing device is coupled to the first data transmission terminal of the data transmitter; and', 'a second impedance-providing device, having a first terminal and a second terminal, wherein the first terminal of the second impedance-providing device is coupled to the second data transmission terminal of the data transmitter, and the second terminal of the second impedance-providing device is coupled to the second terminal of the first impedance-providing device., 'a data transmitter, having a first data transmission terminal and a second data transmission terminal, wherein the first data transmission terminal transmits first data to the data receiver through a first transmission line, and the second data transmission terminal transmits second data to the data receiver through a second transmission line, the data transmitter comprising2. The HDMI data transceiving ...

Systems and Methods for Multi-Channel Transceiver Communications

Systems and methods for transceiver communication are discussed herein. A filter module may be configured to filter each carrier signal of a multicarrier transmit signal with a different bandpass filter, each bandpass filter configured to filter a different frequency band. A carrier control module may be configured to control the plurality of bandpass filters of the filter module using a carrier selection signal to enable or disable each bandpass filter, thereby coupling carrier signals of the multicarrier transmit signal to a first set of bandpass filters and decoupling a second set of bandpass filters. Filtering the carrier signals of the multicarrier transmit signal is performed by the first set of bandpass filters while the decoupling of the second set of bandpass filters limits energy in the respective frequency band. An antenna may be configured to transmit the filtered multicarrier transmit signal.

RF DUPLEXING DEVICE

Radio frequency (RF) duplexing devices and methods of operating the same are disclosed. In one embodiment, an RF duplexing device includes a transmission port, a receive port, a first duplexer, and a second duplexer. The first duplexer is coupled to the transmission port and the receive port, and is configured to provide a first phase shift from the transmission port to the receive port. The second duplexer is also coupled to the transmission port and the receive port. However, the second duplexer is configured to provide a second phase shift that is differential to the first phase shift from the transmission port to the receive port. By providing the second phase shift so that the second phase shift is differential to the first phase shift, the RF duplexing device can provide isolation through cancellation without needing to introduce significant insertion losses. 1. A radio frequency (RF) duplexing device comprising:a transmission port;a receive port;a first duplexer coupled to the transmission port and the receive port, and configured to provide a first phase shift from the transmission port to the receive port; anda second duplexer coupled to the transmission port and the receive port, and configured to provide a second phase shift that is differential to the first phase shift from the transmission port to the receive port.2. The RF duplexing device of wherein the second duplexer is transposed with respect to the first duplexer.3. The RF duplexing device of wherein:the first duplexer includes a non-inverting transformer coupled to the transmission port;the second duplexer includes an inverting transformer coupled to the transmission port, wherein the inverting transformer is configured to provide a polarity inversion such that the second phase shift is differential to the first phase shift.4. The RF duplexing device of further comprising a first RF filter having a first frequency response defining a first stopband that blocks an RF receive band and a second RF ...

CONFIGURABLE ANTENNA STRUCTURE

A configurable antenna structure includes a plurality of switches, a plurality of antenna components, and a configuration module. The configuration module is operable to configure the plurality of switches and the plurality of antenna components into a first antenna for receiving a multiple frequency band multiple standard (MFBMS) signal. The configuration module continues processing by identify a signal component of interest of a plurality of signal components of interest within the MFBMS signal. The configuration module continues processing by configuring the plurality of switches and the plurality of antenna components into a second antenna. 1. A configurable antenna structure comprises:a plurality of switches; when a MFBMS signal is received by the first antenna, identify a signal component of interest within the MFBMS signal; and', 'configure the plurality of switches and the plurality of antenna components into a second antenna based on the signal component of interest, wherein the second antenna has at least one of: a resonant frequency corresponding to a frequency of the signal component of interest, and a directional radiation pattern based on the signal component of interest., 'a configuration module operable to configure the plurality of switches and the plurality of antenna components into a first antenna corresponding to a multiple frequency band multiple standard (MFBMS) mask, the configuration module further operable to, 'a plurality of antenna components; and'}2. The configurable antenna structure of claim 1 , wherein the configuration module is further operable to:reconfigure the plurality of switches and the plurality of antenna components from the first antenna into the second antenna.3. The configurable antenna structure of claim 1 , wherein the configuration module is further operable to:configure a first set of the plurality of switches and a first set of the plurality of antenna components into the first antenna; andconfigure a second set of ...

SYSTEMS AND METHODS OF OPERATIONAL MODES FOR A TRANSCEIVER

A transceiver circuit is configured to operate in a first mode of operation and a second mode of operation such that a receive signal propagates from an antenna through a first filter to a low noise amplifier while simultaneously a transmit signal propagates from a power amplifier through a second filter to the antenna when operating in the first mode. The receive signal propagates from the antenna to the low noise amplifier without being filtered while alternating with the transmit signal propagating from the power amplifier to the antenna without being filtered when operating in the second mode. 1. A transceiver circuit comprising a switching circuit configured to operate in a first mode of operation and a second mode of operation such that a receive signal propagates from an antenna through a first filter to a low noise amplifier while simultaneously a transmit signal propagates from a power amplifier through a second filter to the antenna when operating in the first mode , and the receive signal propagates from the antenna to the low noise amplifier without being filtered while alternating with the transmit signal propagating from the power amplifier to the antenna without being filtered when operating in the second mode.2. The transceiver circuit of wherein the first and second filters are duplexer filters.3. The transceiver circuit of wherein the first mode of operation is a frequency division duplex (FDD) mode and the second mode of operation is a time division duplex mode.4. The transceiver circuit of wherein the switching circuit dynamically switches between the first mode of operation and the second mode of operation.5. The transceiver circuit of wherein the first amplifier is a low noise amplifier and the second amplifier is a power amplifier.6. The transceiver circuit of wherein the receive signal and the transmit signal are radio frequency signals.7. The transceiver circuit of wherein the switching circuit is further configured to switch between a ...

Process for Achieving Spur Mitigation in an Integrated Circuit Including a Wide Band Receiver

A radio transceiver including—an antenna () switch having a control lead (); —a RF and front end circuit () coupled to said antenna switch and operating in at least one 2G mode and at least one 3G mode; —a RF transceiver () coupled to said RF front end and operating in at least a first 2G and a second 3G mode; —a baseband () communicating with a set of peripherals and external devices; The radio transceiver is characterized by the fact that it includes: —control means () for controlling said antenna switch () in a isolated mode; —an programmable adaptive filter controlled by said control means for the purpose of introducing at least one notch for eliminating one corresponding spur. The radio transceiver preferably includes means () for performing, under control of said control means () a FFT computation for the purpose of elaborating a representation, in the time domain, of the different spurs and/or jammers spoiling the received signal when in isolated mode. 118-. (canceled)19. A radio transceiver including:an antenna switch having a control lead;a RF front end circuit coupled to said antenna switch and operating in at least one mode;a RF transceiver coupled to said RF front end and operating in at least one mode; a control unit for controlling said antenna switch so as to put a receiving chain in an isolated mode with respect to the signal received from said antenna;', 'a programmable adaptive filter controlled by said control unit for the purpose of introducing at least one notch for eliminating one spur., 'a baseband circuit communicating with a set of peripherals and external devices, said baseband circuit further comprising20. The radio transceiver according to claim 19 , wherein said baseband circuit further includes a circuit to perform claim 19 , under control of said control unit claim 19 , a FFT computation for the purpose of elaborating a representation of the different spurs spoiling the received signal when in isolated mode.21. The radio transceiver ...

WIDEBAND TRANSMITTER/RECEIVER ARRANGEMENT FOR MULTIFUNCTIONAL RADAR AND COMMUNICATION

A transmitter/receiver arrangement comprises a digital arbitrary waveform generator AWG connected to a transmitter. Said waveform generator is configured to generate an arbitrary waveform within a given bandwidth. Said transmitter/receiver arrangement further comprises an antenna arrangement configured to emit a transmitter signal, and to receive an incident signal, a receiver configured to receive a receiver signal, and an analogue isolator connected to said antenna arrangement, said transmitter, and said receiver. Said analogue isolator is adapted to route said transmitter signal from said transmitter to said antenna arrangement, and said incident signal from said antenna arrangement to said receiver, and to isolate said transmitter signal from said receiver signal. Said receiver is adapted to cancel any residual transmitter signal in said receiver signal by means of at least one digital model of at least said isolator, said antenna arrangement, and said transmitter. 1. A wideband transmitter/receiver arrangement for transmitting and receiving electromagnetic waves comprising:a digital arbitrary waveform generator AWG connected to a transmitter, wherein said waveform generator is configured to generate an arbitrary waveform within a given bandwidth,an antenna arrangement configured to emit a transmitter signal, and to receive an incident signal,a receiver configured to receive a receiver signal,an analogue isolator connected to said antenna arrangement, said transmitter, and said receiver, wherein said analogue isolator is adapted to route said transmitter signal from said transmitter to said antenna arrangement, and said incident signal from said antenna arrangement to said receiver, and to isolate said transmitter signal from said receiver signal,wherein said receiver is adapted to cancel any residual transmitter signal in said receiver signal by means of at least one digital model of at least said isolator, said antenna arrangement, and said transmitter.2. The ...

Tunable duplexer architecture

A tunable radio frequency (RF) duplexer is disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The first hybrid coupler is also operable to split an RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The RF filter circuit is operable to pass the first and second RF QHRSs to the second hybrid coupler and to reflect the first and second RF QHTSs back to the first hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHRSs into an RF receive output signal, while the first hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal.

INTEGRATED CIRCUIT AND WIRELESS COMMUNICATION APPARATUS

Provided is an integrated circuit including a first switch element provided on a transmission path, a second switch element provided on a reception path, a third switch element provided between an input-side node of the first switch element and a ground potential, and a fourth switch element provided between an output-side node of the second switch element and the ground potential. The second switch element and the third switch element are turned on when the first switch element and the fourth switch element are turned off. The second switch element and the third switch element are turned off when the first switch element and the fourth switch element are turned on. An output-side node of the first switch element is connected to an input-side node of the second switch element, and a size of the first switch element is smaller than a size of the second switch element. 1. An integrated circuit comprising:a first switch element that is provided on a transmission path;a second switch element that is provided on a reception path;a third switch element that is provided between an input-side node of the first switch element and a ground potential; anda fourth switch element that is provided between an output-side node of the second switch element and the ground potential,wherein the second switch element and the third switch element are turned on when the first switch element and the fourth switch element are turned off,wherein the second switch element and the third switch element are turned off when the first switch element and the fourth switch element are turned on, andwherein an output-side node of the first switch element is connected to an input-side node of the second switch element, and a size of the first switch element is smaller than a size of the second switch element.2. The integrated circuit according to claim 1 , further comprising:a direct-current voltage applying unit that is provided between a gate terminal of the fourth switch element and the output- ...

LIMITED Q FACTOR TUNABLE FRONT END USING TUNABLE CIRCUITS AND MICROELECTROMECHANICAL SYSTEM (MEMS)

A wireless device is described. The wireless device includes a tunable front end module. The tunable front end module includes a Tx microelectromechanical system bandpass filter. The tunable front end module also includes a first Rx microelectromechanical system bandpass filter. The wireless device also includes a power amplifier. The wireless device further includes a low noise amplifier. 1. A wireless device comprising: a Tx microelectromechanical system bandpass filter; and', 'a first Rx microelectromechanical system bandpass filter;, 'a tunable front end module, comprisinga power amplifier; anda low noise amplifier.2. The wireless device of claim 1 , wherein the tunable front end module further comprises a microelectromechanical system duplexer.3. The wireless device of claim 2 , wherein the microelectromechanical system duplexer comprises a first tunable filter for Tx and a second tunable filter for Rx claim 2 , and wherein the first tunable filter and the second tunable filter use microelectromechanical system technology.4. The wireless device of claim 3 , wherein the power amplifier is coupled between the Tx microelectromechanical system bandpass filter and the first tunable filter claim 3 , and wherein the low noise amplifier is coupled between the first Rx microelectromechanical system bandpass filter and the second tunable filter.5. The wireless device of claim 3 , wherein the first tunable filter and the second tunable filter are coupled to an antenna.6. The wireless device of claim 1 , further comprising a radio frequency integrated circuit that comprises:a driver amplifier; anda post-LNA amplifier.7. The wireless device of claim 6 , wherein the driver amplifier is tunable to provide higher gain to narrower chunks of bandwidth.8. The wireless device of claim 6 , wherein the post-LNA amplifier is tunable to provide higher gain to narrower chunks of bandwidth.9. The wireless device of claim 1 , wherein the power amplifier is integrated with the tunable ...

RF SWITCH IMPLEMENTATION IN CMOS PROCESS

A dual pole dual through switch for switching between at least four states. The switch comprises four transistors such as N-channel Metal Oxide Semiconductor transistors, such that at each state at most one transistor is in “on” state, and the others are in “off” state. Each transistor has its own control circuit, which provides zero or negative voltage to the drain of the transistor, positive voltage to the source of the transistor, and control alternating voltage to the gate of the transistor. The switch can be used on-chip for devices. Such devices may include a base station or a handset of a cordless phone. 1. A switch for selecting between four options , the switch comprising at least four transistors , wherein at any time at most one transistor is in “on” state , wherein the switch is an on-chip switch.2. The switch of wherein the switch is a dual pole dual through switch.3. The switch of wherein the switch is used in a base station of a cordless phone.4. The switch of wherein the switch selects between two antennas and between transmitting and receiving states.5. The switch of wherein at least one of the at least four transistors is an N-channel Metal Oxide Semiconductor (NMOS) transistor.6. The switch of further comprising at least one control circuit providing voltage to at least one of the at least four transistors.7. The switch of wherein the control circuit comprises:components for providing zero or negative voltage to the drain of the at least one transistor;components for providing positive voltage to the source of the at least one transistor; andcomponents for providing alternating voltage to the gate of the at least one transistor.8. The switch of wherein at least one of the at least four transistors is an N-channel Metal Oxide Semiconductor.9. A wireless communication device having a handset and a base station claim 1 , the base station comprising:a first antenna and a second antenna, each of the first antenna and the second antenna operative to ...

High power high isolation low current cmos rf switch

A novel and useful RF switch that comprises four transistors configured to have four operating states, wherein at any time at most one transistor is in ‘on’ state. The switch is an on-chip switch and is constructed in using CMOS processes and technology. The switch is optionally a double pole, double throw (DPDT) switch. The switch can be used in numerous mobile devices such as a cellular phone or in the handset or base station of a cordless phone. The switch optionally selects between two antennas and between transmitter and receiver circuits. Within the switch, at least one of the at least four transistors is optionally an N-channel Metal Oxide Semiconductor (NMOS) transistor. The switch can further comprise one or more logic control circuits providing biasing voltages to one or more of the transistors. Within the switch, the control circuit comprises logic components for providing appropriate biasing voltages to the drain, source and gate terminals of the transistors in the switch.

TUNABLE NOTCH FILTER USING FEEDBACK THROUGH AN EXISTING FEEDBACK RECEIVER

A wireless communication device configured for reducing Tx leakage in a receive signal is described. The wireless communication device includes a transceiver chip. The transceiver chip includes a receiver, a feedback receiver and a transmitter. The wireless communication device also includes a Tx leakage signal reduction module. The Tx leakage signal reduction module reuses the feedback receiver. 1. A wireless communication device configured for reducing Tx leakage in a receive signal , comprising: a receiver;', 'a feedback receiver; and', 'a transmitter; and, 'a transceiver chip, comprisinga Tx leakage signal reduction module, wherein the Tx leakage signal reduction module reuses the feedback receiver.2. The wireless communication device of claim 1 , wherein the Tx leakage signal reduction module comprises a notch filter that reduces Tx leakage in the receive signal.3. The wireless communication device of claim 2 , wherein the notch filter is located on the transceiver chip claim 2 , and wherein the notch filter is coupled to an output of a low noise amplifier that receives the receive signal.4. The wireless communication device of claim 2 , wherein the notch filter is located off the transceiver chip claim 2 , wherein the notch filter receives the receive signal claim 2 , and wherein an output of the notch filter is coupled to an input of a low noise amplifier on the transceiver chip.5. The wireless communication device of claim 1 , wherein the receiver provides a feedback signal to the feedback receiver claim 1 , and wherein the feedback receiver provides a digital leakage reduction signal to the Tx leakage signal reduction module.6. The wireless communication device of claim 5 , wherein the digital leakage reduction signal tunes a notch filter in the Tx leakage signal reduction module to minimize Tx leakage in the receive signal.7. The wireless communication device of claim 6 , wherein the notch filter comprises a first variable capacitor claim 6 , a second ...

TUNABLE NOTCH FILTER USING FEEDBACK THROUGH AN EXISTING FEEDBACK RECEIVER

A wireless communication device configured for reducing Tx leakage in a receive signal is described. The wireless communication device includes a transceiver chip. The transceiver chip includes a receiver, a feedback receiver and a transmitter. The wireless communication device also includes a Tx leakage signal reduction module. The Tx leakage signal reduction module reuses the feedback receiver. 1. A wireless communication device configured for reducing Tx leakage in a receive signal , comprising: a receiver;', 'a feedback receiver; and', 'a transmitter; and, 'a transceiver chip, comprisinga Tx leakage signal reduction module, wherein the Tx leakage signal reduction module reuses the feedback receiver.2. The wireless communication device of claim 1 , wherein the Tx leakage signal reduction module comprises a notch filter that reduces Tx leakage in the receive signal.3. The wireless communication device of claim 2 , wherein the notch filter is located on the transceiver chip claim 2 , and wherein the notch filter is coupled to an output of a low noise amplifier that receives the receive signal.4. The wireless communication device of claim 2 , wherein the notch filter is located off the transceiver chip claim 2 , wherein the notch filter receives the receive signal claim 2 , and wherein an output of the notch filter is coupled to an input of a low noise amplifier on the transceiver chip.5. The wireless communication device of claim 1 , wherein the receiver provides a feedback signal to the feedback receiver claim 1 , and wherein the feedback receiver provides a digital leakage reduction signal to the Tx leakage signal reduction module.6. The wireless communication device of claim 5 , wherein the digital leakage reduction signal tunes a notch filter in the Tx leakage signal reduction module to minimize Tx leakage in the receive signal.7. The wireless communication device of claim 6 , wherein the notch filter comprises a first variable capacitor claim 6 , a second ...

Switching circuit

A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complimentary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output port is also provided.

Antenna and RF Front-end Arrangement

An antenna and RF front-end arrangement include at least one LTE or WCDMA Tx&Rx antenna, one MIMO Rx or diversity antenna adapted for low band LTE or WCDMA and one MIMO Rx or diversity antenna adapted for high band LTE or WCDMA. At least one of the MIMO Rx or diversity antennas is adapted for transmitting and receiving WLAN and/or BlueTooth signals. Therefore, a dedicated WLAN antenna is not required and the number of antennas can be reduced. 116-. (canceled)17. An antenna arrangement comprising:an LTE or WCDMA Tx&Rx antenna;a low band antenna unit comprising a MIMO Rx or diversity antenna adapted for low band LTE or WCDMA; anda high band antenna unit comprising a MIMO Rx or diversity antenna unit adapted for high band LTE or WCDMA;wherein low band antenna and/or the high band antenna unit is adapted for transmitting and receiving WLAN and/or Bluetooth signals.18. The antenna arrangement according to claim 17 , wherein the low band antenna unit comprises one LTE or WCDMA Tx&Rx antenna and one MIMO Rx or diversity antenna and wherein the high band antenna unit comprises one Tx&Rx antenna and one MIMO Rx or diversity antenna adapted for high band.19. The antenna arrangement according to claim 17 , wherein:the low band and high band antenna unit each comprise a common LTE or WCDMA Tx&Rx antenna adapted for both low and high bands.20. The antenna arrangement according to claim 17 , wherein the antenna arrangement is configured to simultaneously use the MIMO Rx or diversity antenna of the high band antenna unit for LTE or WCDMA in the high band and for WLAN and/or Bluetooth.21. The antenna arrangement according to claim 17 , further comprising a Tx&Rx antenna claim 17 , wherein the antenna arrangement is configured to claim 17 , at a given time claim 17 , use the Tx&Rx antenna and the MIMO Rx or diversity antenna of the low band antenna unit for LTE or WCDMA and to simultaneously enable the MIMO Rx or diversity antenna of the high band antenna unit to be used for WLAN ...

TRANSCEIVER HAVING AN ON-CHIP CO-TRANSFORMER

A transceiver formed on an integrated-circuit substrate is disclosed. The transceiver includes: a co-transformer comprising first, second and third windings which wrap each other but are separated from each other; a power amplifier coupled to the co-transformer; and a low-noise amplifier coupled to the co-transformer; wherein the co-transformer is configured for converting a first signal from the power amplifier into a second signal to be transmitted by an antenna when the transceiver is in its transmitter mode, and for converting a third signal from the antenna into a fourth signal to be outputted to the low-noise amplifier when the transceiver is in its receiver mode. 1. A transceiver formed on an integrated-circuit substrate , the transceiver comprising:a co-transformer, comprising first, second and third windings which wrap each other but are separated from each other;a power amplifier, coupled to the co-transformer; anda low-noise amplifier, coupled to the co-transformer;wherein the co-transformer is configured for converting a first signal from the power amplifier into a second signal to be transmitted by an antenna when the transceiver is in its transmitter mode, and for converting a third signal from the antenna into a fourth signal to be outputted to the low-noise amplifier when the transceiver is in its receiver mode.2. The transceiver according to claim 1 , wherein the co-transformer converts between the first and second signals by using the first and second windings claim 1 , and converts between the third and fourth signals by using the second and third windings.3. The transceiver according to claim 1 , wherein the conversion between the first and second signals is performed by lateral electromagnetic coupling between the first and second windings.4. The transceiver according to claim 3 , wherein the conversion between the third and fourth signals is performed by vertical electromagnetic coupling between the second and third windings.5. The transceiver ...

HIGH-FREQUENCY MODULE

In a high-frequency module, first, second and third duplexers are aligned and mounted on a top surface of a multilayer body. The second duplexer, the frequency band of which is spaced apart from those of the first duplexer and the third duplexer, is arranged between the first duplexer and the third duplexer, the frequency bands of which are close to each other. This causes the spacing between the first and third duplexers, the frequencies of signals transmitted and received through which are close to each other, to be increased to suppress or prevent unnecessary electromagnetic field coupling between the first and third duplexers. In addition, also with the second duplexer, the frequency band of which is spaced apart from those of the first and third duplexers and which exists between the first and third duplexers, the unnecessary electromagnetic field coupling is suppressed or prevented between the first and third duplexers. 1. A high-frequency module that transmits and receives a plurality of communication signals at least including a first communication signal , a second communication signal , and a third communication signal , the high-frequency module comprising:a switching element that selects one individual terminal from at least three individual terminals and connects the selected individual terminal to a common terminal; anddemultiplexers that are connected to the respective at least three individual terminals of the switching element; whereinthe switching element and the demultiplexers are mounted on a front surface of a multilayer body of the high-frequency module;the first communication signal, the second communication signal, and the third communication signal each include a transmission signal and a reception signal;a difference between a frequency band of the first communication signal and a frequency band of the second communication signal is smaller than a difference between the frequency band of the first communication signal and the frequency band ...

Systems and methods related to improved isolation between transmit and receive radio-frequency signals

Disclosed are systems and methods for improving isolation between transmit and receive radio-frequency (RF) signals. In some embodiments, a system can be implemented for isolating RF signals during Tx and Rx operations. The system can include a Tx path and an Rx path, with the Tx path having a filter. In some embodiments, the Tx path can include a power amplifier having a plurality of interstages and an output stage, and the filter can be implemented at one of the interstages and before the output stage. The system can further include first and second antennas connected respectively to the Tx and Rx paths. The Tx path, the Rx path, and/or the first and second antennas can be configured to yield a desired level of isolation between the RF signal in the Tx and Tx paths.

Systems and methods for reducing filter insertion loss while maintaining out-of-band attenuation

Disclosed are systems and methods for reducing filter insertion loss while maintaining out-of-band attenuation. In some embodiments, a system can be configured for processing of radio-frequency (RF) signals. The system can include a plurality of signal paths configured to accommodate multiple frequency bands, with each of the multiple bands having a passband. The system can further include a filter circuit disposed along each of the signal paths. At least one of the filter circuits can be segmented into two or more segments that substantially cover the passband corresponding to the filter circuit. The segmented filter circuit can be configured to provide a desired attenuation of out-of-band interferers and a desired insertion loss level. In some embodiments, the signal paths can include receive (Rx) paths.

DEVICES FOR SWITCHING AN ANTENNA

A switchplexer is described. The switchplexer includes switches that are coupled to an antenna. The switchplexer also includes ports. Each of the switches is separately coupled to one of the ports. The switchplexer also includes controlling circuitry coupled to the switches. The controlling circuitry concurrently closes at least two of the switches when indicated by a control signal. 1. A switchplexer , comprising:switches that are coupled to an antenna;ports, wherein each of the switches is separately coupled to one of the ports; andcontrolling circuitry coupled to the switches, wherein the controlling circuitry concurrently closes at least two of the switches when indicated by a control signal.2. The switchplexer of claim 1 , wherein the switches are only coupled to a single antenna.3. The switchplexer of claim 1 , wherein at least one of the ports is coupled to a phase shifter.4. The switchplexer of claim 1 , further comprising a separate set of switches coupled to another antenna and to the controlling circuitry.5. The switchplexer of claim 1 , wherein each of the ports is coupled to one of a plurality of filters.6. The switchplexer of claim 1 , wherein a transmit filter is coupled to one of the ports and a receive filter coupled to another of the ports claim 1 , wherein the transmit filter and the receive filter are independently linkable to the antenna.7. The switchplexer of claim 6 , wherein the receive filter is a multiple mode receive filter.8. The switchplexer of claim 1 , wherein the ports are not coupled to a duplexer.9. The switchplexer of claim 1 , wherein a first port of the ports is coupled to a receive filter and a second port of the ports is coupled to a transmit filter and switches corresponding to the ports are closed to enable concurrent transmission and reception.10. The switchplexer of claim 1 , wherein the controlling circuitry concurrently closes at least two of the switches corresponding to at least two of the ports that support ...

INTERFACE FOR COMMUNICATION BETWEEN VOLTAGE DOMAINS

One or more embodiments provide circuitry for isolation and communication of signals between circuits operating in different voltage domains using capacitive coupling. The embodiments utilize capacitive structures having increased breakdown voltage in comparison to previous parallel plate implementations. The capacitive isolation is provided by parallel plate capacitive structures, each implemented to have parallel plates of different horizontal sizes. Due to the difference in horizontal size, edges of the parallel plates, where electric fields are the strongest, are laterally offset from the region where the parallel plates overlap. As a result, breakdown voltage between the parallel plates is increased. 1. A device , comprising:a first substrate in a first voltage domain;a second substrate in a second voltage domain;a transmitter circuit, that is in the first voltage domain and that is configured and arranged to transmit communication signals;a receiver circuit, that is in the second voltage domain, and that has an input that is configured and arranged to receive the communication signals in the second voltage domain; [ a first capacitive plate having a first horizontal size and configured and arranged to receive the communication signals from the transmitter circuit and in the first voltage domain, and', 'a second capacitive plate having a second horizontal size, the second capacitive plate being parallel to and separated from the first capacitive plate by a first dielectric layer, the second capacitive plate being configured and arranged as a first floating node of the isolation circuit, the second horizontal size differing from the horizontal size of the first capacitive plate such that a breakdown voltage between the first and second capacitive plates is increased relative a to breakdown voltage for a common horizontal size for the first and second capacitive plates;, 'a first capacitive structure located on the first substrate and including,'}, a third ...

Circuit for Controlling Switching Time of Transmitting and Receiving Signal in Wireless Communication System

Disclosed herein is a circuit for controlling a switching time of a transmitting and receiving signal in a wireless communication system including: a high speed switch circuit unit receiving a signal transceived through an antenna to perform a high speed switching operation; a low speed switch circuit unit the signal transceived through the antenna to perform a low speed switching operation; and a controlling unit applying a control signal for controlling a switching time to the high speed switch circuit unit or the low speed switch circuit unit. 1. A circuit for controlling a switching time of a transmitting and receiving signal in a wireless communication system , which is a circuit installed between an antenna and a signal transmitter and a signal receiver of a wireless communication device to perform a selective switching operation according to a switching time required in the wireless communication system , the circuit comprising:a high speed switch circuit unit receiving a signal received from the antenna or a signal to be transmitted through the antenna to perform a high speed switching operation;a low speed switch circuit unit connected in parallel with the high speed switch circuit unit and receiving the signal received from the antenna or the signal to be transmitted through the antenna to perform a low speed switching operation; anda controlling unit electrically connected to each of the high speed switch circuit unit and the low speed switch circuit unit and applying a control signal for controlling a switching time to the high speed switch circuit unit or the low speed switch circuit unit,wherein the control signal is selectively applied from the controlling unit to the high speed switch circuit unit or the low speed switch circuit unit according to the switching time required in the wireless communication system to selectively operate the high speed switch circuit unit or the low speed switch circuit unit.2. The circuit according to claim 1 , wherein ...

Method and apparatus for transmitting and receiving high frequency

A high frequency transmitting and receiving apparatus of a wireless communication system low-noise amplifies a signal that is received from a transmitting and receiving antenna through a low noise amplifier in a reception mode, and amplifies a signal be transmitted through a power amplifier in a transmission mode and transmits the signal through the transmitting and receiving antenna, and the high frequency transmitting and receiving apparatus is connected between the transmitting and receiving antenna and the low noise amplifier and turns on a switch in a reception mode and turns off the switch in a transmission mode, thereby separating transmitting and receiving signals.

RF Switches

RF switching devices are provided that alternatively couple an antenna to either a transmitter amplifier or a receiver amplifier. An exemplary RF switching device comprises two valves, one for a receiver transmission line between the antenna and the receiver amplifier, the other for a transmitter transmission line between the antenna and the power amplifier. Each valve is switchably coupled between ground and its transmission line. When coupled to ground, current flowing through the valve increases the impedance of the transmission line thereby attenuating signals on the transmission line. When decoupled from ground, the impedance of the transmission line is essentially unaffected. The pair of valves is controlled such that when one valve is on the other valve is off, and vice versa, so that the antenna is either receiving signals from the power amplifier or the receiver amplifier is receiving signals from the antenna. 1. An article of manufacture comprising:an amplifier;an antenna port; a node between the amplifier and the antenna port, and', 'a transmission line segment between the amplifier and the antenna port;, 'a transmission line extending between the amplifier and the antenna port and including'}a first valve line joined to the transmission line at the node and including a first valve line segment disposed along the transmission line segment;a second valve line also joined to the transmission line at the node and including a second valve line segment disposed along the transmission line segment;a switch configured to couple and decouple the first and second valve lines to and from ground;the first and second valve lines being arranged such that when a current is flowing in the transmission line and when the switch couples the first and second valve lines to ground, currents flowing from the node to the ground through the first and second valve line segments impedes the current flow through the transmission line segment.2. The article of manufacture of ...

Methods and systems for antenna switching based on uplink metrics

This disclosure provides systems, methods, and apparatus for antenna switching for simultaneous communication. In one embodiment, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas including a first antenna and a second antenna. The wireless communication apparatus further includes a plurality of transmit circuits including a first transmit circuit. The wireless communication apparatus further includes a controller configured to selectively switch the first transmit circuit from transmitting wireless communications via the first antenna to transmit wireless communications via the second antenna based on one or more uplink performance characteristics of at least one of the first antenna and the second antenna. Other aspects, embodiments, and features are also claimed and described.

Devices, systems, and methods for adjusting probing distances

This disclosure provides systems, methods, and apparatus for adjusting probing distances. In one embodiment, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas including a first antenna and a second antenna. The wireless communication apparatus further includes a plurality of receive circuits including a first receive circuit coupled to the first antenna and a second receive circuit coupled to the second antenna. The first receive circuit is configured to measure one or more downlink performance characteristics of the first antenna and the second receive circuit is configured to measure one or more downlink performance characteristics of the second antenna during at least part of a same time period. The wireless communication apparatus further includes a controller configured to determine a difference between the one or more downlink performance characteristics of the first antenna and the second antenna, and determine a next time to use the second receive circuit to measure the one or more downlink performance characteristics of the second antenna based on the determined difference between the one or more downlink performance characteristics of the first antenna and the second antenna.

SYSTEMS, APPARATUS, AND METHODS FOR ANTENNA SELECTION

This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a transmit circuit configured to transmit wireless communications via either a first antenna or a second antenna. The wireless communication apparatus further includes a receive circuit configured to receive wireless communications using either the first antenna or the second antenna. The wireless communication apparatus further includes a controller configured to switch the transmit circuit and the receive circuit from transmitting and receiving wireless communications via the first antenna to transmit and receive wireless communications via the second antenna in response to detecting that a first receive power level of the first antenna is less than a second receive power level of the second antenna and a difference between the second receive power level and the first receive power level is greater than a threshold. 1. A wireless communication apparatus , comprising:a transmit circuit configured to transmit wireless communications via either a first antenna or a second antenna;a receive circuit configured to receive wireless communications using either the first antenna or the second antenna; and a first receive power level of the first antenna is less than a second receive power level of the second antenna; and', 'a difference between the second receive power level and the first receive power level is greater than a threshold., 'a controller configured to switch the transmit circuit and the receive circuit from transmitting and receiving wireless communications via the first antenna to transmit and receive wireless communications via the second antenna in response to detecting2. The wireless communication apparatus of claim 1 , wherein the threshold is based on a difference between the first receive power level and a thermal noise limit.3. The wireless communication ...

ANTENNA SWITCH CONFIGURATION DEVICES, METHODS, & SYSTEMS

A wireless communication apparatus is provided that includes a plurality of antennas and at least one receive or transmit circuit. The apparatus further includes a controller configured to: determine one or more performance characteristics associated with a first antenna while the circuit is connected to the first antenna; switch the circuit from the first antenna to a second antenna; determine one or more performance characteristics associated with the second antenna after the switch; compare the performance characteristics associated with the antennas; determine whether to maintain the switch to the second antenna or to switch the circuit back to the first antenna; and determine a duration of time to maintain a connection between the selected antenna and the circuit based, at least, on one or more performance characteristics. Other aspects, embodiments, and features are also claimed and described. 1. A wireless communications apparatus , comprising:a plurality of antennas including a first antenna and a second antenna;a receive or transmit circuit; and determine one or more performance characteristics associated with the first antenna while the receive or transmit circuit is receiving or transmitting wireless communications via the first antenna;', 'switch the receive or transmit circuit from receiving or transmitting wireless communications via the first antenna to receiving or transmitting wireless communications via the second antenna;', 'determine one or more performance characteristics associated with the second antenna after the switch;', 'compare the performance characteristics associated with the first antenna to the performance characteristics associated with the second antenna;', 'determine whether to maintain the switch of the receive or transmit circuit to the second antenna or to switch the receive or transmit circuit back to the first antenna based on the comparison of the performance characteristics associated with the first antenna to the ...

Antenna switching devices, systems, and methods

This disclosure provides systems, methods, and apparatus for antenna switching. In one embodiment, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas including a first antenna and a second antenna. The wireless communication apparatus further includes at least one receive circuit including a first receive circuit. The wireless communication apparatus further includes a controller configured to selectively switch the first receive circuit from receiving wireless communications via the first antenna to receive wireless communications via the second antenna if one or more performance characteristics of the first antenna are below a threshold in one or more measurement cycles, the one or more measurement cycles including a wake-up cycle outside of a predetermined wake-up cycle. Other aspects, embodiments, and features are also claimed and described.

RF CIRCUIT SYSTEM AND METHOD OF INCREASING THE ISOLATION BETWEEN TWO WIRELESS COMMUNICATIONS STANDARDS WITHIN AN RF CIRCUIT SYSTEM

An RF circuit system comprises a processing unit for generating an RF signal, a first antenna for transmitting the RF signal, a transmitting suppressor including serially connected filters between the first antenna and the processing unit for filtering the RF signal to generate multiple different suppressed RF signals, a second antenna for receiving the RF signal, and an isolation detector for measuring an isolation value representing isolation between the first and second antennae with respect to the RF signal. The transmitting suppressor outputs the RF signal when the isolation value is not smaller than a threshold, and outputs one suppressed RF signal with reference to the difference between the isolation value and the threshold when otherwise. 1. A radio frequency (RF) circuit system comprising:a first antenna;a first RF processing unit capable of generating a first RF signal;a first transmitting suppressor including a plurality of serially connected filters that are electrically coupled between said first antenna and said first RF processing unit for receiving the first RF signal from said first RF processing unit and for filtering the first RF signal thus received to generate a plurality of different first suppressed RF signals respectively at output nodes of said filters, said first transmitting suppressor being capable of outputting one of the first RF signal and the first suppressed RF signals for subsequent transmission by said first antenna;a second antenna capable of receiving the first RF signal transmitted by said first antenna;a first isolation detector electrically coupled to said second antenna for measuring a first isolation value representing the isolation between said first and second antennae with respect to the first RF signal; anda control unit electrically coupled to said first isolation detector and said first transmitting suppressor for receiving the first isolation value and determining whether the first isolation value is not smaller than ...

MATCHING DEVICE, TRANSMITTING AMPLIFIER, AND WIRELESS COMMUNICATION DEVICE

A first signal path has one or a plurality of coils arranged in series, the coils being connected to the output of a first amplifier. A second signal path has the same number of coils as the coils of the first signal path, the coils being arranged in series and connected to the output of a second amplifier. Coupling paths have capacitors and couple the first signal path and the second signal path at both ends of the corresponding coils on the first signal path and the second signal path. A SW controlling unit switches a switch to a contact when a signal is input from the first amplifier and switches the switch to a contact when a signal is input from the second amplifier. 1. A matching device comprising:a first signal path that has one or a plurality of first matching elements arranged in series, the first matching elements being connected to the output of a first amplifier;a second signal path that has the same number of second matching elements as the first matching elements, the second matching elements having the same type of reactance as the first matching elements and being arranged in series and connected to the output of a second amplifier;a plurality of coupling paths that have third matching elements having a different type of reactance from the first matching elements and couple the first signal path and the second signal path at both ends of the respective first matching elements on the first signal path and of the corresponding second matching elements on the second signal path;a switch that switches connection of the first signal path to an antenna or the ground and switches connection of the second signal path to an antenna or the ground; anda switch controlling unit that controls the switch so as to connect the second signal path to the ground when a signal is input from the first amplifier and that controls the switch so as to connect the first signal path to the ground when a signal is input from the second amplifier.2. The matching device ...

Low-loss high-isolation switching architecture

Disclosed are switching circuits and methods that enable a device to switch between two wireless protocols with antenna sharing. In some implementations, the device may use two different wireless protocols concurrently and with high isolation. In some implementations, the device can be provided with insertion loss matched transmission diversity for one of the wireless protocols. In some embodiments, various signal paths and related switches that allow such functionalities can be implemented on a single die such as a silicon-on-insulator (SOI) die.

HIGH-FREQUENCY MODULE

In a high frequency module, mounting lands for reception signal output side ports of SAW duplexers, respectively, on a top surface of a multilayer body are arranged so as to be superposed on reception side external connection lands on a bottom surface of the multilayer body along the layer direction and the mounting lands are directly connected to the reception side external connection lands via holes. Transmission side external connection lands are located on the bottom surface of the multilayer body. The transmission side external connection lands are connected to mounting lands for transmission signal input side ports on the top surface of the multilayer body via certain inner layer electrodes that do not come close to the via holes of the reception system and the via holes. 1. (canceled)2. A high-frequency module comprising:a switch IC that includes a common terminal and a plurality of individual terminals;a SAW duplexer that is connected to the individual terminals and that multiplexes and demultiplexes a transmission signal and a reception signal of a communication signal;a multilayer body that includes mounting lands with which the switch IC and the SAW duplexer are mounted on a certain surface other than a bottom surface and including external connection lands on the bottom surface and having a certain three-dimensional shape;a transmission side external connection land with which the transmission signal is input;an external connection land connected to an antenna;a reception side external connection land with which the reception signal is output are provided along opposing sides, in a plan view of the multilayer body, so that the transmission side external connection land and the external connection land connected to the antenna are spaced apart from the reception side external connection land; anda reception side mounting land where a reception signal side port of the SAW duplexer is mounted is connected to the reception side external connection land ...

Rf front-end circuitry for receive mimo signals

RF front-end circuitry arranged to provide for RF Multiple-Input and Multiple-Output (MIMO) signals is disclosed. In one embodiment, the RF front-end circuitry may include an antenna port, a first multiple throw (MT) switch, and a second MT switch. The first MT switch is configured to selectively couple a first pole port to any one of a first set of throw ports, and the second MT switch is configured to selectively couple a second pole port to any one of a second set of throw ports. The first pole port of the first MT switch is coupled to the antenna port. More than one of the second set of throw ports of the second MT switch are coupled to transmit one or more receive MIMO signals to RF transceiver circuitry. Accordingly, the RF front-end circuitry routes receive MIMO signals from the antenna port to the RF transceiver circuitry.

ANTENNA SWITCHING CIRCUITRY FOR A WORLDPHONE RADIO INTERFACE

This disclosure relates to radio frequency (RF) front-end circuitry. In one embodiment, the RF front-end circuitry is arranged to provide antenna switching functionality for a Worldphone or a World tablet. The RF front-end circuitry may include front-end switching circuitry, a multiple throw microelectromechanical switch (MTMEMS), a first antenna port, a second antenna port, and a third antenna port. The front-end switching circuitry of the RF front-end circuitry is configured to selectively couple one or more RF ports to either the first antenna port or the second antenna port. The MTMEMS is configured to selectively couple a pole port coupled to the third antenna port to any one of a set of throw ports, which may be RF ports or may be coupled to RF ports. As such, the RF front-end circuitry is capable of providing antenna switching functionality between three antennas for a Worldphone or World tablet. 1. Radio frequency (RF) front-end circuitry comprising:a first antenna port;a second antenna port;a third antenna port;front-end switching circuitry having a first RF port wherein the front-end switching circuitry is configured to selectively couple the first RF port to any one of the first antenna port and the second antenna port; anda multiple throw microelectromechanical switch (MTMEMS) having a first pole port and a first set of throw ports, wherein the first pole port of the MTMEMS is coupled to the third antenna port and the MTMEMS is configured to selectively couple the first pole port to any one of the first set of throw ports.2. The RF front-end circuitry of further comprising:a directional coupler coupled between the third antenna port and the first pole port, wherein the directional coupler is configured to direct a signal flow from the third antenna port.3. The RF front-end circuitry of wherein the front-end switching circuitry further has a second RF port and comprises a double pole multiple throw solid-state transistor switch (DPMTSTS) having a second ...

FRONT END SWITCHING CIRCUITRY FOR CARRIER AGGREGATION

This disclosure relates generally to radio frequency (RF) front-end circuitry for different types of carrier aggregation, along with methods of operating the same. In one embodiment, the RF front-end circuitry includes a first diplexer, a second diplexer, first antenna selection circuitry, and second antenna selection circuitry. In order to maintain adequate isolation between high bands and low bands but provide carrier aggregation, the first antenna selection circuitry is configured to selectively couple each of a first plurality of RF ports to any one of a first low band port in the first diplexer and a second low band port in the second diplexer, while the second antenna selection circuitry is configured to selectively couple each of the second plurality of RF ports to any one of a first high band port in the first diplexer and a second high band port in the second diplexer. 1. Radio frequency (RF) front-end circuitry , comprising:a first diplexer having a first low band port and a first high band port;a second diplexer having a second low band port and a second high band port;first antenna selection circuitry coupled to the first low band port and the second low band port, the first antenna selection circuitry being configured to selectively couple each of a first plurality of RF ports to any one of the first low band port and the second low band port; andsecond antenna selection circuitry coupled to the first high band port and the second high band port, the second antenna selection circuitry being configured to selectively couple each of a second plurality of RF ports to any one of the first high band port and the second high band port.2. The RF front-end circuitry of further comprising:low band switching circuitry coupled to a first RF port of the first plurality of RF ports, the low band switching circuitry being configured to selectively couple the first RF port to any one of a third plurality of RF ports.3. The RF front-end circuitry of further comprising: ...

FRONT-END CIRCUIT

The present invention concerns a front-end circuit (FEC) that is connectable to at least two radiators (RADM, RADD), wherein the front-end circuit (FEC) comprises sub-circuits (SC) and each sub-circuit (SC) is associated to one radiator (RADM, RADD). Further, each sub-circuit (SC) comprises a signal path (SP), an antenna port (AP) that is electrically coupled to the signal path (SP) and connectable to the radiator (RADM, RADD), a grounding port (GP) that is connectable to the radiator (RADM, RADD), a ground termination circuit (GTC), and a grounding switch (GS) that is electrically coupled to the grounding port (GP) and to the grounding termination circuit (GTC). 1. A front-end circuit , that is connectable to at least two radiators , the front-end circuit comprising:sub-circuits, each sub-circuit being associated to one radiator, a signal path;', 'an antenna port that is electrically coupled to the signal path and connectable to the radiator;', 'a grounding port that is connectable to the radiator;', 'a ground termination circuit; and', 'a grounding switch that is electrically coupled to the grounding port and to the grounding termination circuit., 'wherein each sub-circuit comprises2. The front-end circuit according to claim 1 , wherein each sub-circuit further comprises an antenna termination circuit and an antenna switch that is electrically connected to the antenna port claim 1 , andwherein the antenna switch can connect the antenna port to one of the signal path or the antenna termination circuit.3. The front-end circuit according to or claim 1 , wherein the ground termination circuit comprises at least two termination paths claim 1 , each termination path has a different impedance and the grounding switch can connect the grounding port to one of the termination paths respectively at a given time so that the radiator has different impedances for different configurations of the grounding switch.4. The front-end circuit according to claim 1 , wherein the ground ...

SYSTEM AND METHOD FOR WIRELESS COMMUNICATIONS

A system and a method for wireless communications, where the system includes: an antenna subsystem, where the antenna subsystem includes at least one antenna unit, the antenna unit includes at least two antenna elements, at least one power splitter/combiner connected to the at least one antenna unit, and at least one switch unit correspondingly connected to the at least one power splitter/combiner, By adopting the method or the system in the embodiments of the present invention, network resources of switch units can be saved. 1. A wireless communication system , comprising:an antenna subsystem, wherein the antenna subsystem comprises at least one antenna unit, the antenna unit comprises at least two antenna elements, and the antenna elements are configured to radiate or receive wireless communication signals;at least one power splitter/combiner connected to the at least one antenna unit, wherein the at least one power splitter/combiner is configured to combine at least two wireless communication signals radiated by the at least two antenna elements which are comprised by the antenna unit, or divide a received wireless communication signal into at least two wireless communication signals on average; andat least one switch unit correspondingly connected to the at least one power splitter/combiner, wherein the at least one switch unit is configured to perform switch control on the wireless communication signals radiated or received by the antenna unit.2. The wireless communication system according to claim 1 , wherein the antenna elements in each antenna unit adopt a planar structure claim 1 , and a same planar structure indicates that all the antenna elements in different antenna units are in one plane;or, the antenna elements in each antenna unit adopt a three-dimensional structure, and the three-dimensional structure indicates that at least two antenna elements in different antenna units are in different planes, respectively.3. The wireless communication system ...

RADIO-FREQUENCY SWITCH SYSTEM HAVING IMPROVED INTERMODULATION DISTORTION PERFORMANCE

Radio-frequency (RF) switch circuits are disclosed providing improved switching performance. An RF switch system includes a switch having a stack of field-effect transistors (FETs) connected in series between first and second nodes. A capacitor connected in series with the switch is configured to inhibit a low-frequency blocker signal from mixing with a fundamental-frequency signal in the switch. 1. A radio-frequency (RF) switch system comprising:a switch having a stack of field-effect transistors (FETs) connected in series between first and second nodes; anda capacitor connected in series with the switch and configured to inhibit a low-frequency blocker signal from mixing with a fundamental-frequency signal in the switch.2. The switch system of wherein the FETs is silicon-on-insulator (SOI) FETs.3. The switch system of wherein the first node is an antenna node.4. The switch system of wherein the capacitor is disposed between the switch and the antenna node.5. The switch system of wherein the switch is part of a transmit path such that the second node of the switch is an input node for an amplified RF signal.6. The switch system of wherein the switch is part of a receive path such that the second node of the switch is an output node for an RF signal received from the antenna.7. (canceled)8. (canceled)9. (canceled)10. A method for fabricating a semiconductor die claim 3 , the method comprising:providing a semiconductor substrate;forming a stack of field-effect transistors (FETs) on the semiconductor substrate so as to be connected in series; andforming a capacitor on the semiconductor substrate so as to be connected in series with an end of the stack, the capacitor configured to inhibit a low-frequency blocker signal from mixing with a fundamental-frequency signal in the stack.11. The method of further comprising forming an insulator layer between the FETs and the semiconductor substrate.12. A radio-frequency (RF) switch module comprising:a packaging substrate ...

Technique for Radio Transceiver Adaptation

A technique for adjusting a transceiver capable of operating in compliance with at least one radio communication standard and comprising at least one RF transmitter and at least one RF receiver is disclosed. The technique comprises determining, when the RF transmitter transmits a signal, the amount of signal power leakage from the RF transmitter into the RF receiver, and adjusting, when RF transmitter is configured to transmit in a specific frequency range, one or more parameters of the RF receiver so as to fulfil a receiver requirement as defined in the radio communication standard. The adjustment is at least partially based on the signal power leakage determined for the specific frequency range.

Printed circuit board and diplexer circuit

A printed circuit board 100 for forming a diplexer circuit 200 comprising a first connector 110 for connecting a first filter 112 and second connector 120 for connecting a second filter 122 , wherein the first connector 110 and the second connector 120 are located on opposite sides of the printed circuit board 100.

Switching circuit

The present invention relates to a switching circuit, which can adjust characteristics such as insertion loss, isolation, and reflection loss according to the need by including a plurality of input/output terminals; at least one antenna; a plurality of main switches for connecting or disconnecting between each of the plurality of input/output terminals and the antenna; and a plurality of shunt switches having one ends respectively connected to the plurality of input/output terminals, wherein a voltage of less than 0 is applied to the other end of at least one of the plurality of shunt switches.

COMMUNICATION TERMINAL WITH ANTENNA SWITCHING FUNCTION AND METHOD FOR AUTOMATICALLY SWITCHING BETWEEN ANTENNAS

A method for switching among antennas of a communication terminal includes receiving acceleration values periodically sensed by an accelerometer. The acceleration values indicate amount of changes in orientation of the communication terminal such as when a user changes from a standing up position to a laying down position. A difference value is calculated between a current acceleration value and a previous acceleration value. When the difference value is greater than a predetermined value, a switching unit is controlled to switch between a first antenna and a second differently oriented antenna, so that a best in use antenna orientation is maintained for best communication regardless of orientation of the communication terminal. 1. A communication terminal with antenna switching function , comprising:a processing unit;an accelerometer, to periodically sense acceleration values of the communication terminal and sends the acceleration values to the processing unit;a first antenna;a second antenna, oriented perpendicular to the first antenna;an encoding/decoding module;a switching unit, one end is connected with the encoding/decoding module, another end is selectively connected with the first antenna or the second antenna to form a first path or a second path correspondingly for electromagnetic waves;the processing unit further comprising:a receiving module, to receive the acceleration values periodically sensed by the accelerometer;a calculating module, to calculate a difference value between the current acceleration value and the previous acceleration value;a determining module, to determine whether the difference value is greater than a predetermined value; anda switching control module, to control the switching unit to switch between the first antenna and the second antenna, thus to switch between the first path and the second path when the difference value is greater than the predetermined value.2. The communication terminal according to claim 1 , wherein the ...

WIRESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD THEREOF

The embodiment provides a wireless communication apparatus and a wireless communication method thereof. The wireless communication apparatus includes an antenna for receiving or transmitting a signal; a receiving unit for demodulating the reception signal received through the antenna; a transmitting unit for generating the transmission signal to be transmitted through the antenna; and a control unit for determining a strength of the reception signal received through the antenna in order to set a strength of the transmission signal based on the strength of the reception signal. 1. A wireless communication apparatus comprising:an antenna for receiving a reception signal transmitted from an outside and for transmitting the transmission signal to the outside;a receiving unit for demodulating the reception signal received through the antenna;a transmitting unit for generating the transmission signal to be transmitted through the antenna; anda control unit for determining a strength of the reception signal received through the antenna in order to set a strength of the transmission signal based on the strength of the reception signal.2. The wireless communication apparatus of claim 1 , wherein the control unit determines the strength of the reception signal by using an AGC voltage output through the receiving unit.3. The wireless communication apparatus of claim 2 , further comprising;an analog-to-digital converting unit for receiving the AGC voltage output through the receiving unit, converting the received AGC voltage into a digital signal, and transferring the digital signal to the control unit.4. The wireless communication apparatus of claim 1 , wherein the control unit sets the strength of the transmitting unit inversely proportional to the strength of the receiving signal.5. The wireless communication apparatus of claim 1 , wherein the transmitting unit further includes a power amplifier for amplifying the transmission signal based on the transmitting strength set ...

METHODS, SYSTEMS, AND NON-TRANSITORY COMPUTER READABLE MEDIA FOR WIDEBAND FREQUENCY AND BANDWIDTH TUNABLE FILTERING

Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that splits a filter input signal into first and second input signals, modifies the first input signal to produce a first output signal, modifies the second input signal to produce a second output signal having an intermediate frequency response, and combines the first and second output signals while adjusting their relative phases and/or amplitudes to produce a filter output signal with the target frequency response. Adjustment includes splitting the second input signal into third and fourth input signals, which are modified and then combined to produce the second output signal having the intermediate frequency response. 1. A wideband frequency and bandwidth tunable filter , comprising:a first splitter for receiving a filter input signal and producing a first input signal and a second input signal;a first modifier block for modifying the first input signal to produce a first output signal;an adjustment circuit for modifying the second input signal to produce a second output signal having an intermediate frequency response;a first signal combiner for combining the first output signal and the second output signal to produce a filter output signal; anda compensation device for adjusting at least one of a phase of the first output signal relative to a phase of the second output signal and an amplitude of the first output signal relative to an amplitude of the second output signal such that the filter output signal has a desired frequency response, a second splitter for receiving the second input signal and producing a third input signal and a fourth input signal;', 'a second modifier block for modifying the third input signal to produce a third output signal;', 'a third modifier block for modifying the fourth input signal to produce a ...

Efficient Linear Integrated Power Amplifier Incorporating Low And High Power Operating Modes

A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.

Radio Frequency Front End Module Circuit Incorporating An Efficient High Linearity Power Amplifier

A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers. 1. A radio frequency (RF) front end module (FEM) , comprising:a TX/RX switch having a TX port, a RX port and an antenna port, said antenna port coupled to an external antenna;a low noise amplifier (LNA) coupled to said RX port and adapted to amplify a signal received from said antenna; and one or more sub-amplifier circuits, each sub-amplifier operative to provide a portion of the total power of said power amplifier;', 'a power combiner operative to combine the outputs of said one or more sub-amplifier circuits to yield a single amplified output signal having a desired total power gain., 'a power amplifier circuit including2. The front end module according to claim 1 , wherein said FEM is adapted to transmit and receive RF signals in a 2.4 GHz frequency band.3. The front end module according to claim 1 , wherein said FEM is adapted to transmit and receive RF signals in a 5 GHz frequency band.4. The front end module according to claim 1 , wherein said TX/RX switch claim 1 , power amplifier and low noise amplifier circuits are fabricated using a semiconductor technology selected from the group consisting of complementary metal oxide semiconductor ( ...

CMOS Based RF Antenna Switch

A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers. 1. A semiconductor antenna switch , comprising:a first antenna port for coupling to a first antenna;a second antenna port for coupling to a second antenna;a transmit/receive port for coupling to either said first antenna or said second antenna;a matching network coupled to said transmit/receive port;a first switch coupled in series between said first antenna port and said matching network; anda second switch coupled in series between said second antenna port and said matching network.2. The semiconductor antenna switch according to claim 1 , further comprising an inductor in series between said first antenna port and said first switch.3. The semiconductor antenna switch according to claim 2 , wherein said inductor comprises a bond wire.4. The semiconductor antenna switch according to claim 1 , further comprising an inductor in series between said second antenna port and said second switch.5. The semiconductor antenna switch according to claim 4 , wherein said inductor comprises a bond wire.6. The semiconductor antenna switch according to claim 1 , wherein said first switch is rendered conductive and said second switch is rendered nonconductive ...

CMOS Based TX/RX Switch

A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers. 1. A transmit/receive switch , comprising:a TX port for coupling to an RF transmit signal;a RX port for coupling to an RF receive signal;an antenna port for coupling to an antenna;an inductance coupled in series with said antenna port and said RX port; anda series combination of capacitance and a field effect transistor (FET) switch coupled in parallel across said inductance, wherein said FET switch having source, drain and gate terminals, the gate terminal operative to receive a control signal for controlling said FET switch.2. The transmit/receive switch according to claim 1 , wherein said switch is rendered conductive in a transmit mode thereby establishing a high impedance parallel resonant circuit of said inductance and said capacitance.3. The transmit/receive switch according to claim 1 , wherein the RF transmit signal is blocked from said RX port by operation of a high impedance parallel resonant circuit of said inductance and said capacitance when said switch is rendered conductive in a transmit mode.4. The transmit/receive switch according to claim 1 , wherein said switch is rendered nonconductive in a receive mode thereby coupling said ...

SWITCHABLE FILTERING CIRCUIT AND THE OPERATION METHOD USING THE SAME

The disclosure provides a switchable filtering circuit and the related operation method, in particular related to a filtering circuit which can be used for Bluetooth system and wireless local area network system. By using a first switch, a hybrid filtering circuit and a second switch, the received mode and transmitted mode between these two systems is realized. Moreover, the frequency responses and the bandwidth adjustments can be controlled according to the plurality of switchable resistors, the plurality of switchable capacitors and the shared and switchable resistors within the hybrid filter circuit. Moreover, the effects of high operated freedom of the circuit and the circuit size reduction can be achieved. 1. A switchable filtering circuit , used for wireless local area network system and Bluetooth system , comprising: a first switch , having a first input port , a second input port , a third input port , a fourth input port , a first output port , a second output port , a third output port and a fourth output port , the first input port electrically connected to an output port of a RF circuit of a first receiver , the second input port electrically connected to an output port of a baseband circuit of a first transmitter , the third input port electrically connected to an output port of a RF circuit of a second receiver , and the fourth input port electrically connected to an output port of a baseband circuit of a second transmitter;a hybrid filtering circuit, having a first input port, a second input port, a third input port, a fourth input port, a first output port, a second output port, a third output port and a fourth output port, the first input port electrically connected to the first output port of the first switch, the second input port electrically connected to the second output port of the first switch, the third input port electrically connected to the third output port of the first switch, the fourth input port electrically connected to the fourth ...

EXPANDABLE DEVICE FOR WIRELESS AUDIO INPUT

An expandable device for wireless audio input is provided in the present invention. The expandable device for wireless audio input is compatible with an audio provider, wherein the audio provider is used for converting an audio to a wireless signal to output the wireless signal. The expandable device for wireless audio input is used for outputting an audio signal to an audio output device, wherein, the audio output device includes a first audio jack. The expandable device for wireless audio input includes a first audio jack plug, a wireless receiver and a second audio jack. The first audio jack plug is used for outputting a first audio signal. The wireless receiver receives the wireless signal outputting from the audio provider and converts the wireless signal into the first audio signal to transmit to the first audio jack plug. When a second audio signal is inputted from the second audio jack plug, the second audio signal is provided to the first audio jack plug. 1. An expandable device for wireless audio input , for outputting an audio signal to an audio output device , wherein the audio output device comprises a first audio jack , and the expandable device for wireless audio input comprises:a first audio jack plug, for outputting a first audio signal;a wireless receiver, coupled to the first audio jack plug, for converting a wireless signal into the first audio signal, and transmitting the first audio signal to the first audio jack plug; anda second audio jack, coupled to the first audio jack plug, wherein, when a second audio signal is inputted from the second audio jack, the second audio jack provides the second audio signal to the first audio jack plug;wherein the expandable device for wireless audio input is compatible with an audio provider, and the audio provider is used for converting an audio into the wireless signal, and transmitting the wireless signal to the wireless receiver.2. The expandable device for wireless audio input according to claim 1 , ...

RADIO FREQUENCY TRANSMIT-RECEIVE APPARATUS, TERMINAL, AND METHOD

A radio communication apparatus includes: a first radio frequency subunit, configured to modulate a third analog baseband signal into a third carrier signal, and send the third carrier signal to a first switch; a second radio frequency subunit, configured to modulate a fourth analog baseband signal into a fourth carrier signal, and send the fourth carrier signal to a second switch; the first switch; the second switch; and the first duplexer shared by a first switch and a second switch, configured to receive the third carrier signal from the first switch, receive the fourth carrier signal from the second switch, filter the third carrier signal and the fourth carrier signal to combine the third carrier signal and the fourth carrier signal to obtain a second carrier aggregation signal, and input the second carrier aggregation signal to a first antenna. 1. A radio communication apparatus , comprising:a first antenna;a first duplexer; anda signal selecting unit corresponding to a frequency;wherein the first antenna is configured to be coupled to the first duplexer;wherein the first duplexer is coupled to the signal selecting unit;wherein the signal selecting unit is configured to select to couple the first duplexer to a radio frequency unit;wherein the radio communication apparatus is configured to receive a first carrier aggregation signal in a first TDD timeslot:wherein the first carrier aggregation signal comprises a first signal in a first frequency band and a second signal in a second frequency band;wherein the radio communication apparatus is configured to, in a second TDD timeslot, receive a third signal in the first frequency band and transmit a fourth signal in the second frequency band.2. The radio communication apparatus according to claim 1 , wherein one uplink resource and three downlink resources are included in the first and second TDD timeslots to achieve a 1:3 ratio of uplink to downlink resources.3. The radio communication apparatus according to claim 1 ...

RADIO FREQUENCY FRONT-END CIRCUIT AND MOBILE TERMINAL

This disclosure provides a radio frequency front-end circuit and a mobile terminal. The circuit includes: a gating switch, separately connected to a first antenna, a second antenna, and a radio frequency circuit module; and a double-pole double-throw switch, separately connected to the gating switch, a third antenna, a fourth antenna, and a first radio frequency circuit, where the radio frequency circuit module is connected to a first target antenna in the first and second antennas via the gating switch, and receives and/or transmits a signal with the first target antenna; or the radio frequency circuit module is connected to a second target antenna in the third and fourth antennas via the gating switch and the double-pole double-throw switch, and receives and/or transmits a signal with the second target antenna; the first radio frequency circuit is connected to one of the third and fourth antennas via the double-pole double-throw switch. 1. A radio frequency front-end circuit , comprising:a gating switch, separately connected to a first antenna, a second antenna, and a radio frequency circuit module; anda double-pole double-throw switch, separately connected to the gating switch, a third antenna, a fourth antenna, and a first radio frequency circuit; whereinthe radio frequency circuit module is connected to a first target antenna in the first antenna and the second antenna by using the gating switch, and receives and/or transmits a signal by using the first target antenna; or the radio frequency circuit module is connected to a second target antenna in the third antenna and the fourth antenna by using the gating switch and the double-pole double-throw switch, and receives and/or transmits a signal by using the second target antenna;in a case that the radio frequency circuit module is connected to the first target antenna in the first antenna and the second antenna, the first radio frequency circuit is connected to the second target antenna in the third antenna and ...

DEVICES AND METHODS RELATED TO HIGH POWER DIODE SWITCHES WITH LOW DC POWER CONSUMPTION

Devices and methods are disclosed, related to high power diode switches. In some embodiments, a radio-frequency switch circuit can include a first switchable path implemented between a pole and a first throw, the first switchable path including one or more PIN diodes, and a second switchable path implemented between the pole and a second throw, the second switchable path including one or more PIN diodes. The radio-frequency switch circuit can further include a switchable shunt path implemented between the second throw and a ground, the switchable shunt path including at least one shunt PIN diode and a capacitance between the second throw and the at least one shunt PIN diode. The pole can be an antenna port, and the first and second throws can be transmit and receive ports, respectively. 1. A radio-frequency switch circuit comprising:a first switchable path implemented between a pole and a first throw, the first switchable path including one or more PIN diodes;a second switchable path implemented between the pole and a second throw, the second switchable path including one or more PIN diodes; anda switchable shunt path implemented between the second throw and a ground, the switchable shunt path including at least one shunt PIN diode and a capacitance between the second throw and the at least one shunt PIN diode.2. The radio-frequency switch circuit of wherein the pole is an antenna port.3. The radio-frequency switch circuit of wherein the first throw is a transmit port configured to receive an amplified radio-frequency signal.4. The radio-frequency switch circuit of further comprising an additional switchable shunt path implemented between the transmit port and a ground.5. The radio-frequency switch circuit of wherein the additional switchable shunt path includes at least one shunt PIN diode.6. The radio-frequency switch circuit of further comprising a transmit bias port electrically connected to a node between the first throw and the one or more PIN diodes of the ...

WIRELESS SENSOR BASE STATION WITH COEXISTENCE OF MULTIPLE HOMOGENEOUS RADIOS

Techniques are disclosed for reducing interference, in a network device, among multiple radio circuits operating in a same or similar frequency band and in close physical proximity. In some embodiments, a network device includes a first and a second wireless network circuit. The network circuits operate in a same radio frequency band and are collocated. The second network circuit is assigned a higher priority than the first network circuit. The device further includes a coexistence controller coupled to the network circuits via a communication bus and configured to selectively suppress transmitting operations of the first network circuit during receiving operations of the second network circuit. Among other benefits, the embodiments can increase wireless network bandwidth and reduce mobile device power consumption by providing coordination among the radio circuits so that the transmitting and receiving operations are performed in a way that they do not interfere with their respective antennas. 1. A network device , comprising:a first and a second wireless network circuits, each of the network circuits operating in a same radio frequency band, wherein the second network circuit is assigned a higher priority than the first network circuit;a coexistence controller coupled to the network circuits via a communication bus and configured to selectively suppress transmitting operations of the first network circuit during receiving operations of the second network circuit; andone or more buffers coupled to the first and second network circuits for storing data,wherein the coexistence controller is further configured to adjust a buffer rate of the buffers based on workload of the network circuits, andwherein the coexistence controller is further configured to adjust resource allocation of the buffers between the first and the second network circuits during the suppression.2. The network device of claim 1 , wherein the coexistence controller is to suppress the transmitting ...

RADIO FREQUENCY TRANSMIT-RECEIVE APPARATUS, TERMINAL, AND METHOD

Embodiments of the present invention provide a communication terminal apparatus and a method. The communication terminal apparatus includes: a switch unit, a radio frequency unit, and a controller. The controller controls the switch unit to perform switching according to a preset ratio of uplink signal time duration resources to downlink signal time duration resources. The embodiments of the present invention can solve a problem of inflexible uplink and downlink time duration resource configuration. 1. A communication terminal apparatus , comprising:a first antenna, configured to receive a first carrier aggregation signal, and to input the first carrier aggregation signal to a duplexer;the duplexer, configured to receive the first carrier aggregation signal from the first antenna, to divide the first carrier aggregation signal into first carrier signals, and to input the first carrier signals to a switch unit, wherein the first carrier signals are downlink signals;the switch unit, configured to receive the first carrier signals from the duplexer and input the first carrier signals to a radio frequency unit in a first time division duplex (TDD) time duration; andthe radio frequency unit, configured to receive the first carrier signals from the switch unit, and to demodulate the first carrier signals into first analog baseband signals; wherein the radio frequency unit is further configured to modulate second analog baseband signals into second carrier signals, and to send the second carrier signals to the switch unit, wherein the second carrier signals are uplink signals;wherein the switch unit is further configured to receive the second carrier signals from the radio frequency unit and send the second carrier signals to the duplexer in a second TDD time duration;wherein the duplexer is further configured to receive the second carrier signals from the switch unit, to combine the second carrier signals to obtain a second carrier aggregation signal, and to input the ...

MULTIMODE AND MULTI-FREQUENCY RADIO FREQUENCY FRONT END MODULE, CHIP, AND COMMUNICATION TERMINAL

Disclosed in the present invention are a multimode and multi-frequency radio frequency front end module, a chip, and a communication terminal. The radio frequency front end module comprises an input matching unit, an amplification unit, a first output matching module, a first switch module, a second matching module, and a control unit. The control unit is connected to the first switch module and is used for controlling a switch state of the first switch module, so as to input a radio frequency signal to one or more radio frequency transmission paths. According to the present invention, radio frequency transmission paths matching the radio frequency front end module can be selected according to different frequency bands under different modes and the control unit controls corresponding switches to be in switch-off and switch-on states, thereby implementing output of radio frequency signals at the different frequency bands under the different modes 1. A multi-mode and multi-frequency radio frequency front end module , comprising an input matching unit , an amplification unit , an output matching unit and a control unit; wherein the output matching unit comprises a first output matching module , a first switch module and a second output matching module; a radio frequency signal input end is connected to an input end of the amplification unit through the input matching unit , an output end of the amplification unit is connected to an input end of the first output matching module; an output end of the first output matching module is correspondingly connected to an input end of the first switch module , an input end of the second output matching module and a radio frequency transmission path; an output end of the first switch module and an output end of the second output matching module are , separately grounded; the control unit is connected to the amplification unit; andthe control unit is connected to the first switch module and is configured to control an on-off state ...

DIGITAL-CENTRIC FULL-DUPLEX ARCHITECTURE

A full-duplex radio device is disclosed. The full-duplex radio device includes an analog transmission (TX) circuit that includes a power amplifier to output an analog TX signal. The full-duplex radio device also includes a feedback receiver circuit coupled to the analog TX circuit. The feedback receiver circuit provides a digital representation of the analog TX signal that is used to digitally cancel at least a transmitter noise component of a self-interference signal associated with a transmission of the analog TX signal in the full-duplex radio device. 1. A full-duplex radio device configured to cancel a self-interference signal in a digital domain , the full-duplex radio device comprising:a transmitter comprising a power amplifier to output an analog TX signal; anda feedback receiver circuit, coupled to the transmitter, to provide a digital representation of the analog TX signal to digitally cancel at least a transmitter noise component of the self-interference signal associated with a transmission of the analog TX signal in the full-duplex radio device.2. The full-duplex radio device of claim 1 , wherein the full-duplex radio device is an in-band full-duplex device configured to concurrently transmit and receive signals in a same frequency band.3. The full-duplex radio device of claim 1 , wherein the feedback receiver circuit further configured to tap the transmitter at an output of the power amplifier to receive a copy of the analog TX signal claim 1 , and to convert the copy of the analog TX signal to the digital representation of the analog TX signal.4. The full-duplex radio device of claim 1 , further comprisingan analog receiver (RX) circuit to receive the self-interference signal responsive to a transmission of the analog TX signal.5. The full-duplex radio device of claim 1 , further comprisinga digital receiver (RX) circuit, operatively coupled to the feedback receiver circuit, to receive the digital representation of the analog TX signal and to digitally ...

CONCURRENT OPERATION OF INTELLIGENT TRANSPORTATION SYSTEM (ITS) RADIOS IN A SAME FREQUENCY BAND WITH A COMMON ANTENNA

Methods and architectures are described to allow concurrent operation of two separate, non-synchronized, radio systems utilizing closely spaced frequency bands, such as IEEE 802.11p and LTE-V2X, or NR-V2X vehicular communications systems, with a common antenna. A full duplex-“like” active interference cancellation process may be employed that includes self-interference cancellation in the RF domain, in the analog domain and the digital baseband domain to reduce complexities and costs of stringent antenna isolation, otherwise required, for a simultaneous TX and RX mode of operation and concurrent RX mode of operation in closely spaced frequency resources. 121-. (canceled)22. A device for vehicular communications comprising:a first intelligent transportation system (ITS) radio adapted to communicate with remote ITS nodes using a first communication protocol;a second ITS radio adapted to communicate with remote ITS nodes over a second wireless channel in the same frequency band using a second communication protocol different from the first communication protocol;a common antenna communicatively coupled to the first and second ITS radios enabling simultaneous unsynchronized transmit (TX) signals from, and receive (RX) signals to, both ITS radios; andself-interference cancellation (SIC) circuitry adapted to reduce interference of desired RX signals at the first or second ITS radios due to communications by the opposite ITS radio using a combination of circuits arranged to provide passive RF isolation of respective radio signals at the common antenna, active analog radio frequency (RF) self-interference cancellation (RFSIC) and baseband self-interference cancellation.23. The device of wherein the circuit arranged to provide baseband self-interference cancellation is at least one of active analog baseband interference cancellation and digital baseband interference cancellation and configured to reduce unwanted components of interference signals of the opposite ITS radio by ...

PLUGGABLE RECEIVER SPLITTER FOR TWO-TRANSMITTER TWO-RECEIVER MICROWAVE DIGITAL RADIOS

A circulator plate for a microwave radio system is disclosed. The circulator plate includes a circulator including a first port, a second port, and a third port; a first isolator including an input port and an output port; a second isolator including an input port and an output port; and a splitter including an input port, a first output port, and a second output port. The output port of the first isolator is coupled to the first port of the circulator. The input port of the second isolator is coupled to the third port of the circulator. The input port of the splitter is coupled to the output port of the second isolator. The first output port of the splitter is configured to be coupled to a first receiver. The second output port of the splitter is configured to be coupled to a second receiver. 1. A circulator plate for a microwave radio system , the circulator plate comprising:a circulator including a first port, a second port, and a third port, wherein the second port of the circulator is configured to be coupled to an antenna;a first isolator including an input port and an output port, wherein the output port of the first isolator is coupled to the first port of the circulator;a second isolator including an input port and an output port, wherein the input port of the second isolator is coupled to the third port of the circulator; and the input port of the splitter is coupled to the output port of the second isolator,', 'the first output port of the splitter is configured to be coupled to a first receiver, and', 'the second output port of the splitter is configured to be coupled to a second receiver., 'a splitter including an input port, a first output port, and a second output port, wherein2. The circulator plate of claim 1 , wherein the splitter further comprises:a pluggable insertion plate located between the first output port and the second output port of the splitter,wherein the splitter is configured to split signals received from the input port of the ...

Envelope tracking frontend device and switch thereof

An envelope tracking frontend device and a switch thereof are provided. The envelope tracking frontend device includes a power amplifier coupled, a switch and an envelope tracking module including an envelope tracking bias supply coupled between the signal generator and the switch. The switch includes a transmit-receive port, a transmit port coupled to the power amplifier, a receive port, a first terminal and a second terminal in series connection, and a third transistor and a fourth transistor as shunt transistors. The envelope tracking bias supply is configured to provide an envelope forward bias signal to the gate of the second transistor and the gate of the fourth transistor, and provide an envelope reverse bias signal to the gate of the first transistor and the gate of the third transistor such that an amplified signal is modulated before being provided by the switch.

Efficient Front End Module

Example aspects of the present disclosure are directed to front end modules for use in communication systems. In one example aspect, a front end module can include a receive path. The receive path can include a low noise amplifier. The receive path can include an analog to digital converter (ADC) circuit operable to receive an analog signal from the low noise amplifier and convert the analog signal to a digital RF receive signal. The receive path can include an ADC post processing circuit operable to process the digital RF receive signal in the digital domain. The front end module can include a transmit path. The transmit path can include a digital to analog converter circuit operable to convert the digital RF transmit signal to an analog RF transmit signal. The transmit path can include a power amplifier. 1. A front end module comprising: a low noise amplifier operable to receive an RF signal from an antenna;', 'an analog to digital converter (ADC) circuit operable to receive an analog signal from the low noise amplifier and convert the analog signal to a digital RF receive signal;', 'an ADC post processing circuit operable to process the digital RF receive signal in the digital domain;', 'a digital down converter circuit operable to convert the digital RF receive signal to a digital baseband receive signal;, 'a receive path, the receive path comprising a digital up converter circuit operable to convert the digital baseband transmit signal to a digital RF transmit signal;', 'a digital to analog converter circuit operable to convert the digital RF transmit signal to an analog RF transmit signal;', 'a power amplifier configured to provide the analog RF transmit signal to the antenna., 'a transmit path, the transmit path comprising2. The front end module of claim 1 , wherein the ADC circuit is operable to convert analog RF signals across a span of about 800 MHz or greater in the 5 GHz band.3. The front end module of claim 1 , wherein the ADC circuit is a gigabit ADC ...

SYSTEMS AND METHODS FOR REDUCING TRANSMIT AND RECEIVE POWER VIA A T/R SWITCH

A wireless communication device is described. The wireless communication device includes a transmit/receive (T/R) switch that is configured with an antenna port coupled to an antenna, a transmitter port coupled to a transmitter and a receiver port coupled to a receiver. The T/R switch selectively connects the transmitter port to the antenna port or the receiver port to the antenna port. The wireless communication device also includes a T/R switch controller that sets the T/R switch to disconnect the transmitter from the antenna when the transmitter is actively transmitting in a high insertion loss mode to reduce power from the transmitter to the antenna. 1. A wireless communication device , comprising:a transmit/receive (T/R) switch that is configured with an antenna port coupled to an antenna, a transmitter port coupled to a transmitter and a receiver port coupled to a receiver, wherein the T/R switch selectively connects the transmitter port to the antenna port or the receiver port to the antenna port; anda T/R switch controller that sets the T/R switch to disconnect the transmitter from the antenna when the transmitter is actively transmitting in a high insertion loss mode to reduce power from the transmitter to the antenna; andwherein the wireless communication device determines a transmit (TX) to receiver (RX) loopback signal to measure T/R switch attenuation during the high insertion loss mode.2. The wireless communication device of claim 1 , wherein the T/R switch disconnects the transmitter from the antenna by connecting the antenna port to the receiver port.3. The wireless communication device of claim 1 , wherein the T/R switch disconnects the transmitter from the antenna by connecting the transmitter port to a second transmitter port.4. (canceled)5. A wireless communication device claim 1 , comprising:a transmit/receive (T/R) switch that is configured with an antenna port coupled to an antenna, a transmitter port coupled to a transmitter and a receiver ...

ADJUSTABLE COMPENSATION CIRCUIT FOR SWITCHING APPLICATIONS

Adjustable compensation circuit for switching applications. In some embodiments, a compensation circuit for a switching circuit can include an inductive circuit that couples a selected node of the switching circuit with a reference node. The inductive circuit can be configured to provide a plurality of inductance values. 1. A compensation circuit for a switching circuit, the compensation circuit comprising an inductive circuit that couples a selected node of the switching circuit with a reference node, the inductive circuit configured to provide a plurality of inductance values. This application is a continuation of U.S. application Ser. No. 14/737,455 filed Jun. 11, 2015, entitled CIRCUITS AND METHODS RELATED TO ADJUSTABLE COMPENSATION FOR PARASITIC EFFECTS IN RADIO-FREQUENCY SWITCH NETWORKS, which claims priority to and the benefit of the filing date of each of U.S. Provisional Application Nos. 62/011,148 filed Jun. 12, 2014, entitled ARCHITECTURES AND METHODS RELATED TO INSERTION LOSS REDUCTION AND IMPROVED ISOLATION IN SWITCH DESIGNS, and 62/011,150 filed Jun. 12, 2014, entitled CIRCUITS AND METHODS RELATED TO ADJUSTABLE COMPENSATION FOR PARASITIC EFFECTS IN RADIO-FREQUENCY SWITCH NETWORKS, the benefits of the filing dates of which are hereby claimed and the disclosures of which are hereby expressly incorporated by reference herein in their entirety.The present disclosure relates to radio-frequency (RF) switches.In many radio-frequency (RF) applications, switches are utilized to facilitate routing of RF signals. Such switches can be affected by one or more performance related parameters such as insertion loss, isolation and parasitic effect.In some implementations, the present disclosure relates to a switching architecture that includes a switch network that having one or more switchable radio-frequency (RF) signal paths, with each path contributing to a parasitic effect associated with the switch network. The switching architecture further includes a parasitic ...

Ultra-low power receiver

An ultra-low-power receiver includes a low-noise amplifier configured to receive an input analog signal and generate an amplified signal and a mixer electrically coupled to the low-noise amplifier. The mixer is configured to convert said amplified signal into an intermediate frequency signal. A progressively reduced intermediate frequency filter is configured to process the intermediate frequency signal from the mixer in discrete time.

SELF-INTERFERENCE CANCELLATION IN FREQUENCY DIVISION DUPLEXING SYSTEM

A method and an apparatus for self-interference cancellation in a communication device. The communication device includes an antenna configured to transmit a transmit signal and receive a receive signal through a duplexer in FDD communications, a first analog to digital converter (ADC) configured to convert the receive signal from analog to digital, a coupler configured to couple a sample of the transmit signal to a second ADC, which is configured to convert the sample of the transmit signal from analog to digital, and self-interference cancellation circuitry configured to process the digital sample of the transmit signal to generate a self-interference cancellation signal and apply the self-interference cancellation signal to the digital receive signal to cancel an amount of interference induced in the receive signal by the transmit signal. The SIC process provides additional isolation between TX signal and RX signal. The additional isolation could be utilized to relief the isolation requirement for the duplexer, reducing the cost and form factor of the duplexer. 1. A communication device comprising:an antenna configured to receive a receive signal in a receive frequency band and transmit a transmit signal in a transmit frequency band;transmit path circuitry configured to generate the transmit signal;receive path circuitry configured to process the receive signal, the receive path circuitry including a first analog to digital converter (ADC) configured to convert the receive signal from an analog receive signal to a digital receive signal;coupled path circuitry comprising a coupler and a second ADC, the coupler configured to couple a sample of the transmit signal to the second ADC, the second ADC configured to convert the sample of the transmit signal from an analog sample of the transmit signal to a digital sample of the transmit signal; and process the digital sample of the transmit signal that is output by the second ADC to generate a self-interference ...

METHODS, DEVICES AND SYSTEMS FOR INCREASING WIRELESS COMMUNICATION RANGE

A device for supporting wireless communication is provided. The device includes a transceiver, an antenna, and a radio frequency (RF) front end system communicatively coupled to the transceiver and the antenna. The RF front end system may include: a RF sampling block coupled to the transceiver and configured to sample signals received from the transceiver and output voltage signals; a RF switching logic coupled to the RF sampling block to receive the voltage signals and configured to switch the front end RF system between a transmitting mode and a receiving mode; a RF transmission gain block coupled to the RF switching logic and configured to increase a transmission power of the signals received from the transceiver; and a RF receiving gain block coupled to the RF switching logic and configured to remove noise signals contained in radio frequency signals received from the antenna. 111-. (canceled)12. A device for supporting wireless communication , comprising:a configurable antenna system including a plurality of antenna elements, wherein each of the antenna elements is capable of being turned on or off to produce different antenna configurations;a transceiver configured to generate a received signal strength indicator (RSSI) for each of the antenna configurations, wherein the RSSI is generated based on signals received from a client device; and receive, from the transceiver, the RSSI for each of the antenna configurations;', 'select an antenna configuration among the antenna configurations based on the RSSI; and', 'configure the configurable antenna system with the selected antenna configuration., 'an antenna logic system communicatively coupled to the transceiver and the configurable antenna system, the antenna logic system configured to13. The device of claim 12 , wherein the selected antenna configuration is used by the configurable antenna system for a predetermine time period.14. The device of claim 13 , wherein after the predetermine time period claim 13 , ...

FLEXIBLE INTEGRATED COMMUNICATIONS AND NAVIGATION TRANSCEIVER SYSTEM

An integrated transceiver system for an avionics radio comprises a first transceiver comprising a first duplexer coupled with a first antenna, a first transmitter that sends an RF signal to the first duplexer, a first receiver that receives an RF signal from the first antenna through the first duplexer, and a first processor in communication with the first transmitter. The first transceiver is reconfigurable for ATG communications or DME navigation. A second transceiver comprises a second duplexer coupled with a second antenna, a second transmitter that sends an RF signal to the second duplexer, a second receiver that receives an RF signal from the second antenna through the second duplexer, and a second processor in communication with the second receiver. The second transceiver is reconfigurable for ATG communications, DME navigation, transponder signal communications, or satellite communications. The first and second transceivers are integrated into a line-replaceable unit of the radio. 1. An integrated transceiver system for an avionics radio , the transceiver system comprising: a first duplexer in operative communication with a first antenna;', 'a first transmitter configured to send a radio frequency (RF) signal to the first duplexer for transmission by the first antenna;', 'a first receiver configured to receive an RF signal from the first antenna through the first duplexer; and', 'a first digital processor in operative communication with the first transmitter;, 'a first transceiver comprisingwherein the first transceiver is reconfigurable for air-to-ground (ATG) communications, or distance measuring equipment (DME) navigation; and a second duplexer in operative communication with a second antenna;', 'a second transmitter configured to send an RF signal to the second duplexer for transmission by the second antenna;', 'a second receiver configured to receive an RF signal from the second antenna through the second duplexer; and', 'a second digital processor in ...

Phase shifter

The disclosure relates to a phase shifter having a first mode of operation and a second mode of operation, the phase shifter comprising a mixer stage configured to mix an oscillator signal with an analogue signal to provide a phase shifted signal, switching circuitry and a controller arranged to provide the analogue signal to the mixer stage as a voltage in the first mode of operation and as a current in the second mode of operation.

Multi-Nyquist Zone Digital-to-Analog Converter (DAC)

A multi-zone digital-to-analog device is provided with a digital-to-analog (D/A) stage having an input to accept a digital input signal with a data bandwidth of M Hertz (Hz), a clock input to accept a clock signal with a clock frequency of P Hz, and an output to supply an analog value having a bandwidth of M Hz. An upsampling stage has an input to accept the analog value and a clock input to accept the clock signal. The upsampling stage has a device bandwidth of L Hz to supply an analog output signal with a full power bandwidth of K Hz, where (P/2)=M and M Подробнее

WAVEGUIDE COMMUNICATION WITH INCREASED LINK DATA RATE

Embodiments of the present disclosure may relate to a transceiver to transmit and receive concurrently radio frequency (RF) signals via a dielectric waveguide. In embodiments, the transceiver may include a transmitter to transmit to a paired transceiver a channelized radio frequency (RF) transmit signal via the dielectric waveguide. A receiver may receive from the paired transceiver a channelized RF receive signal via the dielectric waveguide. In embodiments, the channelized RF receive signal may include an echo of the channelized RF transmit signal. The transceiver may further include an echo suppression circuit to suppress from the channelized RF receive signal the echo of the channelized RF transmit signal. In some embodiments, the channelized RF transmit signal and the channelized RF receive signal may be within a frequency range of approximately 30 gigahertz (GHz) to approximately 1 terahertz (THz), and the transceiver may provide full-duplex millimeter-wave communication. 1. A full-duplex transceiver , comprising:a transmitter to transmit to a paired transceiver a channelized radio frequency (RF) transmit signal via a dielectric waveguide, the channelized RF transmit signal to include a plurality of modulated RF transmit signals, each in a channel that has a frequency band that does not overlap with the frequency band of another of the modulated RF transmit signals; and a splitter to split the channelized RF receive signal into the plurality of modulated RF receive signals; and', 'a plurality of band pass filters coupled to the splitter, each of which is configured to pass one of the plurality of modulated RF receive signals in a predetermined frequency range; and, 'a receiver to receive from the paired transceiver a channelized RF receive signal via the dielectric waveguide, the channelized RF receive signal including a plurality of modulated RF receive signals, each in a channel having a frequency band that does not overlap with the frequency band of another ...

DEVICE AND METHOD FOR CALIBRATING COMMUNICATION MODULE

An electronic device according to various embodiments of the present invention can comprise: a housing; a first antenna element positioned inside the housing or at a first position thereof; a second antenna element positioned inside the housing or at a second position separated from the first position thereof; and a wireless communication circuit positioned inside the housing and electrically coupled to the first antenna element and the second antenna element. The wireless communication circuit comprises: a wireless modem; a source RF circuit electrically connected to the wireless modem, and configured to generate an IF signal; and a second RF circuit positioned at a fourth position closer to the second position than to the first position, wherein: each of the first RF circuit and the second RF circuit is configured to alternately receive an IF signal for transmitting a transmitted signal via the first antenna element and the second antenna element, and includes a first electrical path between the source RF circuit and the second RF circuit, a second electrical path between the source RF circuit and the second RF circuit, and a third electrical path between the first RF circuit and the second RF circuit; the first RF circuit, while being electrically blocked from the first antenna element, is configured to form at least a portion of a first loopback path from the first RF circuit to the source RF circuit through the third electrical path and the second electrical path; and the second RF circuit, while being electrically blocked from the second antenna element, can be configured to form at least a portion of a second loopback path from the second RF circuit to the source RF circuit through the third electrical path and the first electrical path. Additional other embodiments are also possible. 1. An electronic device comprising:a first communication device;a second communication device;a source RF circuit;a first connection member configured to connect the source RF ...

ELECTRONICS INCLUDING ELECTRICAL ISOLATION

An electronics () including an electrical isolation is provided. The electronics () include a bidirectional isolation circuit () separating a first portion () from a second portion () and a bus transceiver switch () disposed in the second portion (). The bus transceiver switch () is communicatively coupled to the bidirectional isolation circuit (). The bus transceiver switch () receives from the bidirectional isolation circuit () a communication control signal provided by the first portion (). 1100200100200. An electronics ( , ) including an electrical isolation , the electronics ( , ) comprising:{'b': 110', '210', '100', '200', '100', '200, 'i': a,', 'a', 'b,', 'b, 'a bidirectional isolation circuit (, ) separating a first portion () from a second portion (); and'}{'b': 120', '220', '100', '200', '120', '220', '110', '210, 'i': b,', 'b', 'b,', 'b', 'b,', 'b, 'a bus transceiver switch () disposed in the second portion (), the bus transceiver switch () being communicatively coupled to the bidirectional isolation circuit (, );'}{'b': 120', '220', '110', '210', '100', '200, 'i': b,', 'b', 'a,', 'a, 'wherein the bus transceiver switch () receives from the bidirectional isolation circuit (, ) a communication control signal provided by the first portion ().'}2100200110210112212110210110210a,ab,b. The electronics ( claim 1 , ) of claim 1 , wherein the bidirectional isolation circuit ( claim 1 , ) is comprised of a transformer ( claim 1 , ) having a processor terminal () and a bus terminal ().3200210. The electronics () of claim 2 , wherein the bidirectional isolation circuit () further comprises:{'b': 214', '212', '214, 'i': a', 'a, 'claim-text': receive the communication control signal;', 'generate a pulse signal based on the communication control signal; and', {'b': '212', 'provide the pulse signal to the transformer (); and'}], 'a pulse generation circuit () communicatively coupled to the transformer (), the pulse generation circuit () being configured to{'b': 214', ' ...

COMMUNICATION DEVICE

A communication device includes a control device and a compensation device. The control device communicates with another device using an antenna. The compensation device is connected to the control device via a first transmission line. The compensation device is connected to the antenna via a second transmission line. The compensation device compensates a loss in an RF signal bidirectionally transmitted between the control device and the antenna via the first and second transmission lines. 1. A communication device comprising:a control device configured to communicate with another device using an antenna; anda compensation device connected to the control device via a first transmission line, connected to the antenna via a second transmission line, and configured to compensate a loss in an RF signal bidirectionally transmitted between the control device and the antenna via the first and second transmission lines, wherein a processing unit configured to transmit a transmission RF signal as an RF signal to be transmitted and receive a reception RF signal as an RF signal received by the antenna,', 'a first transmission amplifier configured to amplify the transmission RF signal received from the processing unit, wherein the first transmission amplifier has a signal output terminal,', 'a first reception amplifier configured to amplify the reception RF signal transmitted to the control device via the first transmission line and transmit the reception RF signal to the processing unit, wherein the first reception amplifier has a signal input terminal,', 'a first switch unit configured to switch between a transmission connection state that connects the signal output terminal of the first transmission amplifier to the first transmission line and a reception connection state that connects the signal input terminal of the first reception amplifier to the first transmission line, and', 'a switching control unit configured to control at least the first switch unit,, 'the control ...

Flexible Beamforming Architecture

An apparatus is disclosed for implementing a flexible beamforming architecture. In an example aspect, the apparatus comprises an antenna array comprising a first antenna element with a first feed port and a second antenna element with a second feed port. The apparatus also comprises a wireless transceiver with a first dedicated transceiver path coupled to the first feed port and a second dedicated transceiver path coupled to the second feed port. The wireless transceiver also comprises a flexible beamforming network configured to selectively be in a first configuration that couples both the first dedicated transceiver path and the second dedicated transceiver path to a first intermediate transceiver path of the wireless transceiver, and be in a second configuration that connects the first dedicated transceiver path to the first intermediate transceiver path and connects the second dedicated transceiver path to a second intermediate transceiver path of the wireless transceiver.

WIRELESS COMMUNICATION WITH INTERFERENCE MITIGATION

In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal. 1. A satellite communication terminal for transmitting signals to and receiving signals from one or more satellites orbiting the earth , the satellite communication terminal comprising:a steerable primary antenna that includes an array of a first number of primary antenna elements, each primary antenna element having a band pass filter configured to pass frequencies of a signal received by the primary antenna element that are within a desired frequency band while attenuating frequencies that are outside of the desired frequency band, a low noise amplifier configured to amplify a signal received by the primary antenna element, a power amplifier configured to amplify a signal to be transmitted by the primary antenna element, a switch configured to switch the primary antenna element between operating in a transmit mode and a receive mode, and a phase shifter configured to apply weights to signals transmitted and received by the primary antenna element;an auxiliary antenna having an array of a second number of ...

Contact mems architecture for improved cycle count and hot-switching and esd

The disclosure is directed to optimized switching circuitry utilizing MEMS (Microelectromechanical Systems) circuitry in series with solid state circuitry. Specifically, the MEMS circuitry includes a first MEMS circuit in parallel with (and separate from) a second MEMS circuit. A paired signal is defined as a transmit signal and a receive signal (in a single band) that are transmitted or received on separate paths or on separate nodes. The transmit signal is associated with the first MEMS circuit, and the receive signal is associated with the second MEMS circuit. The solid state circuitry switches between the first MEMS circuit and second MEMS circuit without requiring any switching in the first or second MEMS circuits.

Low power, low out-of-band harmonic content radio

A radio that includes a transceiver to transmit and receive RF signals. The transceiver including a transmitter, a transformer, and a receiver, the transformer is coupled to and shared between the transmitter and the receiver. A resonator is formed by the combination of the transformer and capacitive elements of the transmitter and receiver.

ARCHITECTURES AND METHODS RELATED TO INSERTION LOSS REDUCTION AND IMPROVED ISOLATION IN SWITCH DESIGNS

Architectures and methods related to insertion loss reduction and improved isolation in switch designs. In some embodiments, a switching architecture can include a switch network having one or more switchable radio-frequency (RF) signal paths, where each path contributes to a parasitic effect associated with the switch network. The switching architecture can further include a parasitic compensation circuit coupled to a node of the switch network. The parasitic compensation circuit can be configured to compensate for the parasitic effect of the switch network.

CIRCUITS AND METHODS RELATED TO ADJUSTABLE COMPENSATION FOR PARASITIC EFFECTS IN RADIO-FREQUENCY SWITCH NETWORKS

Circuits and methods related to adjustable compensation for parasitic effects in radio-frequency switch networks. In some embodiments, an adjustable compensation circuit for a radio-frequency (RF) circuit can include an inductive circuit that couples a selected node of the RF circuit with a reference node. The inductive circuit can be configured to provide a plurality of inductance values. In some embodiments, the RF circuit can be, for example, a switch network having a plurality of switchable RF signal paths, the reference node can be a ground node, and the selected node can be a common node such as an antenna port.

SELF-ACTIVATED TRANSFER SWITCH

A self-activated transfer switch is disclosed. The self-activated transfer switch includes a transmit (TX) switch coupled between a TX port and an antenna port. A receive (RX) switch is coupled between the antenna port and an RX port, and RF-to-bias generator circuitry is coupled to the TX port and the antenna port. The RF-to-bias generator circuitry is configured to generate a bias signal to turn off the RX switch and turn on the TX switch when either of a TX signal is provided at the TX port and a jammer signal is received at the antenna port. The bias signal is generated from energy of at least one of the TX signal and the jammer signal. The TX switch is turned off and the RX switch is turned on when the bias signal is not being generated. 1. A self-activated transfer switch comprising:a transmit (TX) switch coupled between a TX port and an antenna port;a receive (RX) switch coupled between the antenna port and an RX port; andRF-to-bias generator circuitry coupled to the TX port and the antenna port and configured to generate a bias signal to turn off the RX switch and turn on the TX switch when either of a TX signal is provided at the TX port and a jammer signal is received at the antenna port, wherein the bias signal is generated from energy of at least one of the TX signal and the jammer signal, and wherein the TX switch is turned off and the RX switch is turned on when the bias signal is not being generated.2. The self-activated transfer switch of wherein the TX switch comprises:an impedance inverter coupled between the TX port and the antenna port; anda shunt switching element coupled between the TX port and a fixed voltage node.3. The self-activated transfer switch of wherein the fixed voltage node is RF ground.4. The self-activated transfer switch of wherein the TX switch and the RX switch each comprises stacked field effect transistors (FETs).5. The self-activated transfer switch of wherein the TX switch is configured to switch at least 100 W of RF power. ...

SEMICONDUCTOR DEVICE AND SYSTEM

An SCI can perform transmission only or reception only, however, it is necessary to reset the SCI when transmission and reception is switched to transmission only or to reception only. A semiconductor device includes an interface circuit which performs a sequential communication of transmit or receive according to a synchronous clock. The interface circuit includes a register to specify an operation enabled state which is at least one of a transmit state and a receive state, and a mode control circuit to change at least one mode of transmit or receive in the operation enabled state. 1. A semiconductor device comprising:an interface circuit operable to perform a sequential communication of transmit or receive according to a synchronous clock,wherein the interface circuit comprises:a first register operable to specify an operation enabled state which is at least one of a transmit state and a receive state; anda mode control circuit operable to change at least one mode of transmit or receive in the operation enabled state.2. The semiconductor device according to claim 1 ,wherein the interface circuit outputs a status, in response to a change of the mode.3. The semiconductor device according to further comprising:a second register operable to hold information to specify a transmit determent or a receive determent, in a transmit-receive state.4. The semiconductor device according to claim 3 ,wherein the second register holds the information capable of specifying one of command receive and data receive.5. The semiconductor device according to claim 1 ,wherein the interface circuit is capable of outputting one of a data transmit completion interruption request, a command receive completion interruption request, and a data receive completion interruption request.6. The semiconductor device according to further comprising:a data transfer device,wherein the mode control circuit is controlled corresponding to a prescribed operation of the data transfer device, and changes the ...

Radio-frequency module

A radio-frequency module includes a substrate and a switch IC mounted on the substrate and including a common terminal and a plurality of selection terminals. The substrate includes ground electrodes disposed between the common terminal and the plurality of selection terminals in a plan view of the substrate.

TIME DIVISION DUPLEXING RECEIVER WITH CONSTANT IMPEDANCE FOR A BROADBAND LINE TERMINAL WITH ASYNCHRONOUS TRANSMISSION

A line driver circuit has first and second differential input terminals and first and second differential output terminals, and is configured to interface with first and second termination impedances coupled between the first and second differential output terminals, respectively, and first and second transmit chain output terminals, respectively. The line driver circuit includes an amplifier circuit having first and second input terminals coupled to the first and second differential input terminals of the line driver circuit, respectively, and first and second output terminals coupled to the first and second differential output terminals of the line driver circuit, respectively, and an impedance switching circuit coupled between the first and second output terminals of the amplifier circuit. The impedance switching circuit switches between a first switching mode and a second switching mode, wherein in the first switching mode a first switching configuration is established resulting in a first output impedance. 1. A line driver circuit having first and second differential input terminals and first and second differential output terminals , the line driver circuit configured to interface with first and second termination impedances coupled between the first and second differential output terminals , respectively , and first and second transmit chain output terminals , respectively , comprising:an amplifier circuit having first and second input terminals coupled to the first and second differential input terminals of the line driver circuit, respectively, and first and second output terminals coupled to the first and second differential output terminals of the line driver circuit, respectively;an impedance switching circuit coupled between the first and second output terminals of the amplifier circuit,wherein the impedance switching circuit is configured to switch between a first switching mode and a second switching mode.2. The line driver circuit of claim 1 ,wherein ...

CIRCUIT FOR ENHANCING SENSITIVITY OF MOBILE DEVICE

A circuit for enhancing sensitivity of a mobile device is provided. The mobile device includes a transceiver and an antenna. The circuit is coupled between the transceiver and the antenna. The circuit includes a first terminal, a second terminal, a control terminal, a first switch circuitry, a second switch circuitry, and at least one low-noise amplifier. The first terminal is coupled to the transceiver. The second terminal is coupled to the antenna. The control terminal receives a control signal. When the antenna receives a signal, the circuit, according to the control signal, controls the first terminal coupled to the second terminal through the first switch circuitry, the low-noise amplifier, and the second switch circuitry. Through the above circuit, the sensitivity of the antenna is enhanced, the performance of the antenna is improved, and user experience is improved. 1. A circuit for enhancing sensitivity of a mobile device , the mobile device comprising a transceiver and an antenna , the circuit being coupled between the transceiver and the antenna , and the circuit comprising:a first terminal coupled to the transceiver;a second terminal coupled to the antenna;a control terminal receiving a control signal;a first switch circuitry;a second switch circuitry; andat least one low-noise amplifier,wherein when the antenna receives a signal, the circuit, according to the control signal, controls the first terminal coupled to the second terminal through the first switch circuitry, the at least one low-noise amplifier, and the second switch circuitry.2. The circuit for enhancing sensitivity as claimed in claim 1 , wherein when strength of the signal is greater than a predetermined signal-strength threshold claim 1 , the circuit claim 1 , according to the control signal claim 1 , controls the first terminal to be coupled to the second terminal through the first switch circuitry.3. The circuit for enhancing sensitivity as claimed in claim 2 ,wherein the at least one low ...