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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 21380. Отображено 100.
15-03-2012 дата публикации

Antenna matching structure, antenna matching method and wireless communication terminal

Номер: US20120064894A1
Автор: Sheng-bing CHEN, Yinong Liu
Принадлежит: SONY ERICSSON MOBILE COMMUNICATIONS AB

The present invention relates to an antenna matching structure, an antenna matching method and a wireless communication terminal. In which, the antenna matching structure comprising: a measuring unit configured to measure a RSSI value; a control unit configured to generate a first switching control signal when the RSSI value measured by the measuring unit is less than a predetermined threshold; and a parameter switching unit configured to select one set of matching parameters from predetermined at least one set of matching parameters according to the first switching control signal, and switch current matching parameters of the adjustable antenna matching circuit to the selected matching parameters. According to the embodiments of the present invention, a higher RSSI value can be acquired to ensure the signal transmission quality.

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Номер записи: 1
29-03-2012 дата публикации

High-frequency switch module

Номер: US20120075002A1
Автор: Hisanori MURASE, Takanori Uejima
Принадлежит: Murata Manufacturing Co Ltd

A high-frequency switch module that significantly reduces deterioration of high-frequency characteristics and improves harmonic wave distortion characteristics includes a high-frequency switch and SAW filters mounted on a multilayer substrate. Low pass filters are provided within the multilayer substrate. The terminals of the high-frequency switch are located on the bottom surface of the semiconductor substrate. The high-frequency switch includes a high-frequency circuit ground terminal and a control circuit ground terminal, the multilayer substrate includes therein a ground electrode which is electrically connected to a top surface connection electrode to which the high-frequency circuit ground terminal is connected, and a wiring electrode electrically connected to a top surface connection electrode to which the control circuit ground terminal is connected is arranged so as to be insulated from the ground electrode.

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Номер записи: 2
14-06-2012 дата публикации

Semiconductor integrated circuit and receiving apparatus

Номер: US20120148001A1
Автор: Kiminori Yashima
Принадлежит: Mitsumi Electric Co Ltd

A receiving apparatus includes a first circuit to receive a radio wave of a first frequency band from a tuning circuit, a second circuit, including an amplifier to receive a radio wave of a second frequency band lower in frequency than the first frequency band, and a generating circuit to generate a tuning voltage for the tuning circuit in a first state in which the radio wave of the first frequency band is received, and a bias voltage for the amplifier in a second state in which the radio wave of the second frequency band is received. The generating circuit includes a voltage generator to generate and output the tuning voltage and the bias voltage to an output route, and a switching circuit to switch the output route to couple to the amplifier in the second state.

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Номер записи: 3
21-06-2012 дата публикации

Electronic switch and communication device including such a switch

Номер: US20120157011A1
Автор: BAUDOUIN Martineau
Принадлежит: STMICROELECTRONICS SA

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.

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Номер записи: 4
05-07-2012 дата публикации

Dual Channel Transmission

Номер: US20120170682A1
Автор: Risto Vaisanen
Принадлежит: Nokia Oyj

There is provided a solution for dual channel transmission in a radio communication device. Both transmission signals to be transmitted on different channels are mixed two times by using oscillator signals having the same frequencies for both transmission signals, and the transmission circuitry is arranged to process the signals so that the transmission signals are nevertheless up-converted to different frequency channels.

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Номер записи: 5
05-07-2012 дата публикации

Communication method and apparatus for phone having voice recognition function

Номер: US20120173233A1
Автор: Joung-Min Seo
Принадлежит: Individual

A method and apparatus for communicating through a phone having a voice recognition function are provided. The method of performing communication using a phone having a voice recognition function includes converting to an incoming call notification and voice recognition mode when a phone call is received; converting to a communication connection and speakerphone mode when voice information related to a communication connection instruction is recognized; performing communication using a speakerphone; and ending communication when voice information related to a communication end instruction is recognized during communication using the speakerphone. Therefore, when a phone call is received, a mode of a phone is converted to a speakerphone mode with a voice instruction using a voice recognition function, and thus communication can be performed without using a hand.

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Номер записи: 6
12-07-2012 дата публикации

Methods for adjusting radio-frequency circuitry to mitigate interference effects

Номер: US20120178386A1
Автор: Matt A. Mow, Mattia Pascolini, Robert W. Schlub, Ruben Caballero
Принадлежит: Apple Inc

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.

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Номер записи: 7
09-08-2012 дата публикации

Filtering using impedance translator

Номер: US20120201175A1
Автор: Hans Pletzer, Harald Pretl, Krzysztof Dufrene, Rastislav Vazny, Werner Schelmbauer
Принадлежит: Hans Pletzer, Harald Pretl, Krzysztof Dufrene, Rastislav Vazny, Werner Schelmbauer

This disclosure relates to low noise amplifiers (LNAs) and more particularly to LNAs integrated on integrated circuit (IC) chips along with radio frequency (RF) amplifiers. In one implementation, an impedance translator is coupled to an amplifier, the impedance translator to cause the amplifier to selectively amplify the one or more components of a received signal.

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Номер записи: 8
23-08-2012 дата публикации

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

Номер: US20120214549A1
Автор: Thomas Philbin
Принадлежит: HARRIS CORP

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.

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Номер записи: 9
06-09-2012 дата публикации

High-frequency switch module

Номер: US20120224514A1
Автор: Osamu Shibata, Takanori Uejima
Принадлежит: Murata Manufacturing Co Ltd

A high-frequency switch module includes a first switching element and a second switching element. A common terminal of the first switching element is connected to an antenna. A common input terminal of the second switching element is connected to a multi-band power amplifier. A second individual output terminal of the second switching element is connected to a fourth individual terminal of the first switching element via a first low-pass filter, and is connected to a third individual terminal of the first switching element via a series circuit including a second low-pass filter and a high-pass filter. A first individual output terminal of the second switching element is connected to a first individual terminal of the first switching element via a phase-shift circuit and a first SAW duplexer, and is connected to a second individual terminal of the first switching element via the phase-shift circuit and a second SAW duplexer.

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Номер записи: 10
20-09-2012 дата публикации

Radio communication device, transmission circuit and buffer circuit

Номер: US20120238221A1
Автор: Jun Deguchi
Принадлежит: Toshiba Corp

According to one embodiment, a buffer circuit has a capacitor comprising a first terminal and a second terminal, an input signal being inputted to the first terminal, a first inverting amplifier circuit configured to invert and amplify a signal of the second terminal of the capacitor, a second inverting amplifier circuit configure to invert and amplify an output signal of the first inverting amplifier circuit, and a MOS (Metal Oxide Semiconductor) transistor comprising a third terminal, a fourth terminal and a gate, the third terminal being connected to the second terminal of the capacitor, the fourth terminal being connected to a connection node of the first and the second inverting amplifier circuits, an inversion signal of the input signal being inputted to the gate.

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Номер записи: 11
27-09-2012 дата публикации

Digital receiver for reactive radio

Номер: US20120243645A1
Автор: Bruno Bougard
Принадлежит: Interuniversitair Microelektronica Centrum vzw IMEC, SAMSUNG ELECTRONICS CO LTD

A digital receiver is disclosed. In one aspect, the receiver includes a receiving module for receiving packetized data. The receive may further include a first processing module for packet detection having a first programmable processor. The receiver may further include a second processing module for demodulation and packet decoding having a second programmable processor. The receiver may further include a first digital receive controller having a third processor arranged for being notified of detection of data by the first processing module and for activating the second processing module.

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Номер записи: 12
08-11-2012 дата публикации

Transceiver Arrangement and Method for Processing a Signal

Номер: US20120282867A1
Автор: Zdravko Boos
Принадлежит: Intel Mobile Communications GmbH

A transceiver arrangement includes a first receive path including a first connection and a first receive amplifier, and a second receive path including a second connection, a second receive amplifier, and a frequency conversion device. The transceiver also includes a controllable coupling device configured to couple an output of the first receive amplifier to an input of the frequency conversion device on the second signal path, and a control circuit configured to provide a control signal to the coupling device for selectively combining signals delivered by the first and second receive amplifiers in the correct phase based on a parameter which is derived from a signal present at the first connection or second connection, or both. The parameter derived from the received signal represents whether a signal strength of the received signal or a signal quality of the received signal exceeds a first predetermined threshold.

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Номер записи: 13
03-01-2013 дата публикации

Semiconductor integrated circuit device

Номер: US20130002338A1
Автор: Masao Kondo, Masatoshi Morikawa, Satoshi Goto
Принадлежит: Renesas Electronics Corp

SOI MOSFETs are used for the transistors for switching of an antenna switch and yet harmonic distortion is significantly reduced. Capacitance elements are respectively added to either the respective drains or gates of the transistors comprising the through MOSFET group of reception branch of the antenna switch. This makes the voltage amplitude between source and gate and that between drain and gate different from each other. As a result, the voltage dependence of source-drain parasitic capacitance becomes asymmetric with respect to the polarity of voltage. This asymmetry property produces signal distortion having similar asymmetry property. Therefore, the following can be implemented by setting it so that it has the same amplitude as that of second-harmonic waves arising from the voltage dependence of substrate capacitance and a phase opposite to that of the same: second-order harmonic distortion can be canceled out and thus second-order harmonic distortion can be reduced.

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Номер записи: 14
10-01-2013 дата публикации

Basestation Maintenance Systems and Method

Номер: US20130012267A1
Автор: Charles Nicholls, Scott Widdowson
Принадлежит: Individual

A method and system for maintaining a basestation system is provided. The basestation includes a basestation module. The system includes a translating system for translating at least a portion of the basestation module between a first position and a second position. The system includes a connection module for detachably connecting to the portion of the basestation module when the portion of the basestation circuitry is at the second position.

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Номер записи: 15
14-02-2013 дата публикации

Frontend module for time division duplex (tdd) carrier aggregation

Номер: US20130039229A1
Автор: Chester Park, Jung-Fu Cheng
Принадлежит: Individual

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.

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Номер записи: 16
14-02-2013 дата публикации

Radio Frequency Receiver with Dual Band Reception and Dual ADC

Номер: US20130039444A1
Автор: Alain-Serge Porret, Friederich Mombers, Melly THIERRY
Принадлежит: SIGEAR EUROPE SARL

A radio frequency receiver with dual band reception and dual analog-to-digital converters (ADCs) can be configured to operate in a single channel mode or a dual channel mode to receive a single RF input channel or two RF input channels at the same or different frequency bands. In the single channel mode, the dual ADCs can be used to improve the performance of the receiver for the single input signal or the dual ADCs can be configured for reduced power consumption. In the dual channel mode, the dual ADCs operate on the individual RF input signals to realize dual band reception. In one embodiment, the receiver is configured for asymmetric dual band reception to receive a wideband input signal on a first input signal path and a narrow band input signal on a second input signal path.

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Номер записи: 17
28-02-2013 дата публикации

Semiconductor switch and wireless device

Номер: US20130052969A1
Автор: Toshiki Seshita
Принадлежит: Toshiba Corp

According to one embodiment, a semiconductor switch includes a power supply, a driver, a switch section, and a first potential controller. The power supply includes a first potential generator and a second potential generator. The first potential generator is configured to generate a negative first potential. The second potential generator is configured to generate a positive second potential that a power supply potential is stepped down. The driver is supplied with the first potential and a third potential and configured to output at least one of the first potential and the third potential based on a terminal switching signal. The switch section is configured to connect a common terminal to any one of a plurality of radio frequency terminals according to an output of the driver. The first potential controller includes a divider and an amplifier.

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Номер записи: 18
14-03-2013 дата публикации

Mobile device for multi-channel sound collection and output using common connector, and driving method thereof

Номер: US20130064381A1
Автор: Hyo-Sun JANG, Ju-Hee CHANG, Sung-Hoon Jeong
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A mobile device for providing multi-channel sound collection and output using a common connector, and a driving method thereof are provided. A mobile device having a sound compressor and a sound decompressor includes a connector slidably receiving a sound collector plug or a sound output plug, a plug identification unit for, if one of the sound collector plug and the sound output plug is coupled to the connector, identifying if the plug coupled to the connector is the sound collector plug or is the sound output plug, a switching unit for electrically coupling the plug coupled to the connector, to the sound compressor, or electrically coupling the plug coupled to the connector, to the sound decompressor, and a controller for controlling switching of the switching unit according to the identification outcome.

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Номер записи: 19
21-03-2013 дата публикации

WIRELESS COMMUNICATION WITH DIELECTRIC MEDIUM

Номер: US20130070817A1
Автор: Kyles Ian A., McCormack Gary D.
Принадлежит:

An electronic device may include a dielectric substrate, an electronic circuit supported by the substrate, for processing data, and a communication unit having an antenna. The communication unit may be mounted to the substrate in communication with the electronic circuit for converting between a first EHF electromagnetic signal containing digital information and a data signal conducted by the electronic circuit. The electromagnetic signal may be transmitted or received along a signal path by the antenna. An electromagnetic signal guide assembly may include a dielectric element made of a dielectric material disposed proximate the antenna in the signal path. The electromagnetic signal guide may have sides extending along the signal path. A sleeve element may extend around the dielectric element along sides of the dielectric element. The sleeve element may impede transmission of the electromagnetic signal through the sides of the dielectric element. 1. An electronic device comprising:a first dielectric substrate;at least a first electronic circuit supported by the substrate, for processing data;at least a first communication unit having a first antenna, the first communication unit mounted to the substrate in communication with the at least a first electronic circuit for converting between a first EHF electromagnetic signal containing digital information and a first data signal conducted by the at least a first electronic circuit, the first electromagnetic signal transmitted or received along a first signal path by the first antenna; anda first electromagnetic signal guide assembly including a first dielectric element made of a first dielectric material disposed proximate the first antenna in the first signal path and having sides extending along the first signal path, and a first sleeve element extending around the first dielectric element along at least a portion of the sides of the first dielectric element, the first sleeve element impeding transmission of the first ...

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Номер записи: 20
21-03-2013 дата публикации

SYSTEM AND METHOD FOR TDD/TMA WITH HYBRID BYPASS SWITCH OF RECEIVING AMPLIFIER

Номер: US20130072137A1
Автор: Carney Paul, Wang Jing
Принадлежит:

Various embodiments disclosed herein relate to a circuit for connecting a transceiver input/output to an antenna, the circuit including one or more of the following: a transceiver port; an antenna port; a reception path disposed between the transceiver port and the antenna port; a first amplifier configured to amplify a signal on the reception path when the circuit is configured according to a normal operation mode; and a first hybrid coupler configured to establish a bypass path around the first amplifier when the circuit is configured according to a bypass operation mode. 1. A circuit for connecting a transceiver input/output to an antenna , the circuit comprising:a transceiver port;an antenna port;a reception path disposed between the transceiver port and the antenna port;a first amplifier configured to amplify a signal on the reception path when the circuit is configured according to a normal operation mode; anda first hybrid coupler configured to establish a bypass path around the first amplifier when the circuit is configured according to a bypass operation mode.2. The circuit of claim 1 , further comprising a transmission path disposed between the transceiver port and the antenna port.3. The circuit of claim 2 , further comprising a power detector configured to:detect transmitter power on the transmission path; andconfigure the circuit according to a bypass operation mode when the power detector detects transmitter power on the transmission path.4. The circuit of claim 1 , further comprising:a second amplifier configured to amplify the signal on the reception path;a first switchable impedance disposed between a first port of the first hybrid coupler and the first amplifier; anda second switchable impedance disposed between a second port of the first hybrid coupler and the second amplifier,wherein, the circuit being configured according to a bypass operation mode comprises the first switchable impedance and the second switchable impedance being configured in a ...

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Номер записи: 21
28-03-2013 дата публикации

System and method for controlling a wireless device

Номер: US20130078982A1
Автор: James W. McCoy
Принадлежит: Individual

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.

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Номер записи: 22
18-04-2013 дата публикации

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

Номер: US20130095774A1
Автор: Dandekar Kapil R., Gonzalez David, Gulati Nikhil
Принадлежит: DREXEL UNIVERSITY

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 ...

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Номер записи: 23
25-04-2013 дата публикации

SEMICONDUCTOR DEVICE

Номер: US20130100999A1
Автор: Akamine Yukinori, FURUTA Yoshikazu, Hori Kazuaki
Принадлежит: RENESAS ELECTRONICS CORPORATION

In a transmission portion of a semiconductor device, a first amplification portion receives a digital baseband signal and amplifies the signal with a first gain through digital processing. A digital-to-analog conversion portion converts the digital baseband signal amplified by the first amplification portion into an analog baseband signal. A modulation portion generates a transmission signal by modulating a local oscillation signal with the analog baseband signal. A second amplification portion amplifies the transmission signal with a variable second gain. A control unit receives information representing a transmission mode and adjusts the first gain in accordance with the transmission mode. 1. A semiconductor device capable of transmitting data in accordance with each of a plurality of transmission modes , comprising:a first amplification portion receiving a first digital baseband signal and generating a second digital baseband signal by amplifying said first digital baseband signal with a first gain, the first gain being variable;a digital-to-analog conversion portion for converting said second digital baseband signal generated by said first amplification portion into an analog baseband signal;a modulation portion for generating a transmission signal by modulating a local oscillation signal with said analog baseband signal;a second amplification portion for amplifying said transmission signal with a variable second gain; anda control unit receiving information representing any of said plurality of transmission modes and adjusting said first gain in accordance with said information.2. The semiconductor device according to claim 1 , whereinsaid control unit further adjusts said second gain in accordance with said information.3. The semiconductor device according to claim 2 , whereinsaid control unit adjusts said first and second gains such that a minimum amount of change in said first gain is less than a minimum amount of change in said second gain.4. The ...

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Номер записи: 24
25-04-2013 дата публикации

METHOD AND DEVICE FOR SENDING/RECEIVING ELECTROMAGNETIC SIGNALS RECEIVED/SENT ON ONE OR MORE FIRST FREQUENCY BANDS

Номер: US20130101299A1
Автор: Bellot Laurent, Blanc stéphane, Boukour Tariq, El Sayed Jawad, Plumecoq Jean-Christophe
Принадлежит: E-Blink

In order to send electromagnetic signals received on one or more first frequency bands, the method applies a transformation to the signals, by performing the following actions: selecting first frequency subbands, forming a first set of frequency subbands of the first frequency band(s); using organization rules to associate one or more second sets of frequency subbands, forming one or more second frequency bands, with each first frequency subband of the first set; and using optimization rules to determine frequency translations to transpose the signals received in the first frequency subbands into signals sent in the second frequency band(s). 1. A method for transmitting electromagnetic signals received in one or more first frequency bands , comprising:selecting first frequency sub-bands as a first set of frequency sub-bands of the first frequency band(s);in accordance with organizational rules, associating with each first frequency sub-band of the first set, one or more second sets of frequency sub-bands of one or more second frequency bands; anddetermining, for each first frequency sub-band selected, frequency translations for transposing the signals received in the first frequency sub-bands to signals transmitted in the second frequency band(s) in order to defragment the first frequency set in the second frequency band(s) by reducing width of the second frequency band.2. The method according to claim 1 , including selecting only the first frequency sub-bands in which electromagnetic signals considered wanted are received.3. The method according to claim 1 , wherein the organizational rules include rules of associating a second frequency sub-band with a segment covering all or part of a first frequency sub-band.4. The method according to claim 1 , wherein the optimization rules include rules for building a second set of frequency sub-bands adjacent to at least one other frequency sub-band of the set.5. The method according to claim 1 , used in a cellular ...

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Номер записи: 25
02-05-2013 дата публикации

Switch

Номер: US20130106495A1
Автор: Eiichiro Otobe, Kouki TANJI
Принадлежит: Samsung Electro Mechanics Co Ltd

A switch is capable of performing switching, while reducing distortion with respect to amplitude of a high frequency signal. The switch includes: an input terminal to which a high frequency signal is input; a first switching unit connected between the input terminal and a first output terminal and selectively outputting the high frequency signal through the first output terminal; and a second switching unit connected between the input terminal and a second output terminal and selectively outputting the high frequency signal through the second output terminal. Each switching unit includes an impedance transformer installed on a signal line, a bipolar transistor having an emitter grounded, a collector connected to the signal line, and a base receiving current according to a control voltage applied thereto; and a bipolar transistor having a collector grounded, an emitter connected to the signal line, and a base receiving current according to the control voltage.

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Номер записи: 26
02-05-2013 дата публикации

Dual association local area network transceiver and methods for use therewith

Номер: US20130107818A1
Автор: Chiu Ngok Eric Wong, Hsiang-Ling Li, Manas Deb
Принадлежит: Broadcom Corp

A radio frequency (RF) transceiver includes an RF section including an RF receiver operable to convert a received RF signal into inbound data and an RF transmitter to convert outbound data into a transmit signal in accordance with a local area network protocol. A processing module configures the RF section for communication with a first remote device via a first frequency channel of the local area network protocol and configures the RF section for communication with a second remote device via a second frequency channel of the local area network protocol to maintain simultaneous association with both the first remote device and the second remote device.

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Номер записи: 27
02-05-2013 дата публикации

Antenna Tuning Using the Ratio of Complex Forward and Reflected Signals

Номер: US20130107914A1
Автор: DAKSHINAMURTHY Sriraman, Fujimoto William, Lorenz Robert, Park Bongseok
Принадлежит:

Embodiments operate to reduce impedance mismatch between the PA and the antenna in a transceiver, thereby reducing the VSWR at the PA output and improving both the delivered power to the antenna and receiver sensitivity. In embodiments, an antenna tuner is placed between the PA and the antenna. The antenna tuner includes programmable components that can be tuned in order to effect an impedance translation between the antenna and the PA output, thereby reducing reflections seen by the PA. In an embodiment, the antenna tuner is adapted dynamically based on changes in the impedance of the antenna. Accordingly, the PA is operated very close to its optimal load impedance. In another embodiment, the antenna tuner is controlled based on measurement of the voltage reflection coefficient S 1. A method for controlling an antenna tuner coupled between a power amplifier (PA) and an antenna in a wireless device , comprising:measuring forward and reflected signal components at an output of the PA, wherein the forward and reflected signal components result from applying an input signal to a transmit path of the wireless device;generating amplitude and phase information from each of the measured forward and reflected signal components;estimating a voltage reflection coefficient using the generated amplitude and phase information; andadjusting the antenna tuner based on the voltage reflection coefficient to reduce an impedance mismatch between the PA and the antenna.2. The method of claim 1 , wherein measuring the forward and reflected signal components comprises selectively controlling a directional coupler coupled to the output of the PA.3. The method of claim 1 , wherein generating the amplitude and phase information from each of the measured forward and reflected signal components comprises separately down-converting and digitizing the forward and reflected signal components to generate respectively forward digital baseband in-phase (I) and quadrature (Q) signals and reflected ...

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Номер записи: 28
02-05-2013 дата публикации

CONTACTLESS SIGNAL SPLICING

Номер: US20130109303A1
Автор: Kyles Ian A., McCormack Gary D.
Принадлежит: WAVECONNEX, INC.

A first electronic device may include a first electronic circuit and a second electronic circuit is provided. The first electronic device may include an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit. An interface circuit may be operatively coupled to the internal communication link. The interface circuit may include an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from another EHF communications circuit of a second electronic device. This EHF electromagnetic signal may enable the second electronic device to control or monitor the first electronic device. 1. An electronic device comprising:a first electronic circuit;a second electronic circuit;an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit; andan interface circuit operatively coupled to the internal communication link and including an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from an external device and generate from the received EHF electromagnetic signal a receive communication signal, the interface circuit selectively applying the receive communication signal to the internal communication link.2. The electronic device according to further comprising a second EHF communications circuit configured to generate an EHF electromagnetic signal from an internal communication signal conducted on the internal communication link claim 1 , and transmit the generated EHF electromagnetic signal to the external device.3. The electronic device according to claim 2 , wherein the transmitter is configured to transmit a modulated EHF signal representing communication signals between the first electronic circuit and the second electronic circuit.4. The electronic device according to ...

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Номер записи: 29
02-05-2013 дата публикации

Methods and Systems for Pre-Emphasis of an Envelope Tracking Power Amplifier Supply Voltage

Номер: US20130109442A1
Автор: DAKSHINAMURTHY Sriraman, Lorenz Robert
Принадлежит:

Embodiments provide systems and methods for producing an envelope tracking (ET) PA supply voltage with minimum headroom relative to the desired RF output signal of the PA. In an embodiment, the PA supply voltage is generated by applying an ET signal to an ET path of the wireless device, and by further applying pre-emphasis to the ET signal to compensate for a frequency response of the ET path. Embodiments operate by estimating the frequency response of the ET path and determining the pre-emphasis based on the estimate of the frequency response of the ET path. In embodiments, the pre-emphasis is applied using a pre-emphasis filter, which may be within or outside of the ET path. Further, the pre-emphasis may be applied to the ET signal in digital or analog form. 1. A method for controlling a power amplifier (PA) in a wireless device , comprising:generating an envelope tracking (ET) signal based on an envelope of a complex transmit signal;applying the ET signal to an ET path of the wireless device to generate a supply voltage signal;applying pre-emphasis to the ET signal, wherein the pre-emphasis compensates for a frequency response of the ET path of the wireless device; andproviding the supply voltage signal to the PA.2. The method of claim 1 , wherein generating the ET signal comprises computing a magnitude of the complex transmit signal and compensating the computed magnitude.3. The method of claim 1 , wherein applying the ET signal to the ET path of the wireless device comprises up-sampling the ET signal to reduce digital-to-analog converter (DAC) produced images of the ET signal.4. The method of claim 1 , wherein applying the ET signal to the ET path of the wireless device comprises applying the ET signal to a power supply that produces the supply voltage signal.5. The method of claim 1 , further comprising:(a) applying tone samples of a pre-determined frequency to the ET path;(b) sampling the supply voltage signal, resulting from the applied tone samples, to ...

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Номер записи: 30
09-05-2013 дата публикации

DUPLEXER WITH ENHANCED ISOLATION

Номер: US20130114470A1
Автор: LEE Cheng Jung, Lee Woo Yong
Принадлежит:

A system includes a transmit filter () in a transmit path to couple to an antenna () and pass signals in a transmit band. A receive filter () is disposed in a receive path to couple to the antenna and to the transmit filter to pass signals in a receive band different from the transmit band. An enhanced frequency variable impedance () is used to provide isolation between signals in the transmit and receive bands on the receive path. A phase and magnitude controlled feedback path can also be used to cancel transmit signals in the receive path. 1. A system comprising:a transmit filter in a transmit path of a duplexer configured to be coupled to an antenna, the transmit filter configured to pass signals in a transmit band;a receive filter in a receive path of the duplexer, the receive filter configured to be coupled to the antenna and to the transmit filter, and configured to pass signals in a receive band different from the transmit band;a quarter wave transformer tuned to a substantially open circuit impedance in the transmit band, the quarter wave transformer configured to couple the receive filter to the antenna and transmit filter;a frequency-variable impedance coupled to the receive path to provide isolation between signals in the transmit and receive bands on the receive path.2. The system of claim 1 , wherein the frequency-variable impedance comprises a notch filter tuned to attenuate signals in the transmit band.3. The system of claim 1 , wherein the notch filter is coupled to an output of the receive filter.4. The system of claim 1 , comprising:a power amplifier coupled to the transmit path; anda low noise amplifier coupled to the receive path.5. The system of claim 4 , comprising an RF device coupled to the low noise amplifier and the power amplifier.6. The system of claim 1 , wherein the frequency-variable impedance comprises a coupler configured to present a substantially open circuit impedance to signals in the transmit band.7. The system of claim 6 , ...

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Номер записи: 31
09-05-2013 дата публикации

System and Method for Radio Antenna Sharing in an Information Handling System

Номер: US20130115896A1
Автор: Finn Larry William, Sultenfuss Andrew T., Utz James R.
Принадлежит: DELL PRODUCTS, LP

An information handling system includes a processing system with a radio output, another processing system with a radio output, and a radio selector operable to couple an antenna to a selected one of the radios. A radio selector board includes a radio, a selector switch with an input terminal coupled to the radio, another input terminal coupleable to another radio, a control input coupleable to a control module, and an output coupleable to an antenna. In response to a control signal from the control module, the selector switch connects the first radio to the antenna, and in response to another control signal, the selector switch connects the other radio to the antenna. 1. A method comprising:coupling a first radio associated with a first processing system of an information handling system to a first switch of a radio selector board, wherein the first processing system is operable to control the first radio;coupling a second processing system to a second radio of the radio selector board, wherein the second radio is associated with the second processing system, and wherein the second processing system is operable to control the second radio;coupling the second radio to the first switch;coupling a first antenna to the first switch;in response to operating the first processing system in a first low-power mode, connecting the second radio to the first antenna; andin response to operating the second processing system in a second low-power mode, connecting the first radio to the first antenna.2. The method of claim 1 , further comprising:coupling the first radio to a second switch;coupling the second radio to the second switch;coupling a second antenna to the second switch;in response to operating the first processing system in the first low-power mode, connecting the second radio to the second antenna; andin response to operating the second processing system in a second low-power mode, connecting the first radio to second antenna.3. The method of claim 1 , further ...

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Номер записи: 32
09-05-2013 дата публикации

FILTER BLOCK AND A SIGNAL TRANSCEIVER COMPRISING SUCH A FILTER BLOCK

Номер: US20130115897A1
Автор: Walker Stewart Rollo
Принадлежит: FILTRONIC WIRELESS LIMITED

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 ...

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Номер записи: 33
09-05-2013 дата публикации

Communications Chip with Multi-Port Distributed Antenna

Номер: US20130116016A1
Автор: Rofougaran Ahmadreza, Rofougaran Maryam
Принадлежит: BROADCOM CORPORATION

Methods and systems for power combining in a multi-port distributed antenna are disclosed and may include power combining signals from power amplifiers (PAs) on a chip. The PAs may be coupled to a single distributed antenna via antenna ports. A phase of each of the signals may be matched at the antenna ports via phase-matching circuitry. A characteristic impedance may be configured at the ports based on a location of the ports. The PAs may be impedance matched to the antenna ports via impedance matching elements. A power level of the power-combined signals may be monitored via a power detector coupled to the distributed antenna. The power detector may include an envelope detector, such as a diode. The antenna may be integrated on the chip or may be located external to the chip. The signals may include RF signals and the antenna may include a microstrip antenna. 120-. (canceled)2127-. (canceled)28. A wireless communications chip comprising:at least one circuit comprising a plurality of power amplifiers, said plurality of power amplifiers being coupled to a microstrip antenna via a plurality of antenna ports;said at least one circuit being operable to produce at least one combined signal from said plurality of power amplifiers.29. The wireless communications chip of claim 28 , wherein said at least one circuit is operable to match a phase of said at least one combined signal.30. The wireless communications chip of claim 28 , wherein said at least one circuit is operable to configure a characteristic impedance at least at one of said plurality of antenna ports.31. The wireless communications chip of claim 28 , wherein said at least one circuit comprises an impedance matching element operable to impedance match at least one of said plurality of power amplifiers to one of said plurality of antenna ports.32. The wireless communications chip of claim 28 , wherein said at least one circuit comprises a power detector coupled to said distributed antenna claim 28 , said power ...

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Номер записи: 34
16-05-2013 дата публикации

Apparatus, Methods, Computer Programs and Computer Readable Storage Mediums for Wireless Communications

Номер: US20130122829A1
Автор: Hujanen Arto Tapio, Hyvonen Lassi Pentti Olavi, Krogerus Joonas Veli-Allan, Li Pei, Somersalo Matti Kalevi
Принадлежит: Nokia Corporation

An apparatus including a first port configured to receive signals from a transceiver and to receive a first antenna; a second port configured to receive signals from a transceiver and to receive a second antenna; a first reactive component coupled to the first port; a second reactive component coupled to the first reactive component at a first junction and to the second port, wherein at least the first reactive component is configured to have an impedance that shifts the phase of a first signal, in a second operational resonant frequency band, received from the first antenna, and the second reactive component is configured to have an impedance that shifts the phase of a second signal, in the second operational resonant frequency band, received from the transceiver, so that the first signal and the second signal at least partially destructively interfere with one another at the first junction. 1. An apparatus comprising:a first port configured to receive signals from a transceiver and to receive a first antenna, the first antenna being configured to operate in a first operational resonant frequency band;a second port configured to receive signals from a transceiver and to receive a second antenna, the second antenna being configured to operate in a second operational resonant frequency band;a first reactive component coupled to the first port;a second reactive component coupled to the first reactive component at a first junction and to the second port, wherein at least the first reactive component is configured to have an impedance that shifts the phase of a first signal, in the second operational resonant frequency band, received from the first antenna, and the second reactive component is configured to have an impedance that shifts the phase of a second signal, in the second operational resonant frequency band, received from the transceiver, to cause at least partial destructive interference between the first signal and the second signal at the first junction.2. An ...

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Номер записи: 35
16-05-2013 дата публикации

COMMUNICATION SYSTEMS WITH ENHANCED ISOLATION PROVISION AND OPTIMIZED IMPEDANCE MATCHING

Номер: US20130122831A1
Автор: Desclos Laurent, DUPUY Alexandre
Принадлежит: ETHERTRONICS, INC.

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 ...

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Номер записи: 36
16-05-2013 дата публикации

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

Номер: US20130122832A1
Автор: Yoon Hyun Su
Принадлежит:

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 ...

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Номер записи: 37
16-05-2013 дата публикации

RADIO FREQUENCY PACKAGE ON PACKAGE CIRCUIT

Номер: US20130122833A1
Автор: Ciccarelli Steven C, Hadjichristos Aristotele, Holenstein Christian, Lane Ryan D, Sahota Gurkanwal Singh, Shah Milind P, Wilding David J
Принадлежит: QUALCOMM INCORPORATED

A radio frequency package on package (PoP) circuit is described. The radio frequency package on package (PoP) circuit includes a first radio frequency package. The first radio frequency package includes radio frequency components. The radio frequency package on package (PoP) circuit also includes a second radio frequency package. The second radio frequency package includes radio frequency components. The first radio frequency package and the second radio frequency package are in a vertical configuration. The radio frequency components on the first radio frequency package are designed to reduce the effects of ground inductance. 1. A radio frequency package on package circuit comprising:a first radio frequency package comprising radio frequency components; anda second radio frequency package comprising radio frequency components, wherein the first radio frequency package and the second radio frequency package are in a vertical configuration, and wherein the radio frequency components on the first radio frequency package are designed to reduce the effects of ground inductance.2. The radio frequency package on package circuit of claim 1 , wherein the first radio frequency package comprises passive radio frequency components.3. The radio frequency package on package circuit of claim 1 , wherein the second radio frequency package comprises active radio frequency components.4. The radio frequency package on package circuit of claim 1 , wherein each of the radio frequency components on the first radio frequency package are passive radio frequency components.5. The radio frequency package on package circuit of claim 1 , wherein each of the radio frequency components on the second radio frequency package are active radio frequency components.6. The radio frequency package on package circuit of claim 1 , wherein the first radio frequency package comprises active radio frequency components.7. The radio frequency package on package circuit of claim 1 , wherein the second radio ...

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Номер записи: 38
16-05-2013 дата публикации

Mobile wireless communications device with selective antenna load switching and related methods

Номер: US20130122976A1
Автор: Adrian Matthew Cooke, Krystyna Bandurska, Yihong Qi, Ying Tong Man
Принадлежит: Research in Motion Ltd

A mobile wireless communications device may include at least two antennas having a different structure. The device may also include wireless transceivers, a load(s), signal processing circuitry, and a controller. The controller may be for selectively switching the signal processing circuitry to a desired one of the wireless transceivers, selectively switching a desired one of the antennas to the desired one of the wireless transceivers, and selectively switching a different one of the antennas to at least one of the loads.

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Номер записи: 39
23-05-2013 дата публикации

SIGNAL GENERATOR CIRCUIT AND RADIO TRANSMISSION AND RECEPTION DEVICE INCLUDING THE SAME

Номер: US20130130632A1
Автор: OISHI Kazuaki
Принадлежит: FUJITSU LIMITED

The disclosed signal generator circuit has a four-phase signal generator circuit generating four-phase signals with a first frequency; an eight-phase signal generator circuit performing ½ frequency division of the four-phase signals to generate eight-phase signals with a second frequency; a first to a fourth harmonic rejection mixer circuits multiplying a first four-phase signal and a second four-phase signal of the four-phase signals by a first to a third eight-phase signals and a third to a fifth eight-phase signals of the eight-phase signals with mutually different combinations; a subtractor subtracting between outputs of the first and the fourth harmonic rejection mixer circuits to generate a first output signal with a third frequency; and an adder adding between outputs of the second and the third harmonic rejection mixer circuits to generate a second output signal with a third frequency whose phase is different from the first output signal by π/2. 1. A signal generator circuit comprising:a four-phase signal generator circuit which generates four-phase signals with a first frequency;an eight-phase signal generator circuit which performs ½ frequency division of the four-phase signals to generate eight-phase signals with a second frequency which is ½ of the first frequency;a first to a fourth harmonic rejection mixer circuits which multiply a first four-phase signal and a second four-phase signal of the four-phase signals by a first to a third eight-phase signals and a third to a fifth eight-phase signals of the eight-phase signals with mutually different combinations;a subtractor which subtracts between outputs of the first and the fourth harmonic rejection mixer circuits to generate a first output signal with a third frequency which is a sum of the first frequency and the second frequency; andan adder which adds between outputs of the second and the third harmonic rejection mixer circuits to generate a second output signal with a third frequency of which phase ...

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Номер записи: 40
30-05-2013 дата публикации

Low loss quarter wave radio frequency relay switch apparatus and method

Номер: US20130135059A1
Автор: Mark W. Duron
Принадлежит: Symbol Technologies LLC

A low loss quarter wave Radio Frequency (RF) relay switch apparatus and method provides more efficient transmission of RF energy to downstream antenna switching elements in an antenna switching network. The antenna switching network may include multiple antenna multiplexer modules which are configured to operate in a local use configuration or a pass through configuration. The antenna multiplexer modules are designed for maximum efficiency in the pass through configuration acting virtually lossless when passing through RF energy.

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Номер записи: 41
30-05-2013 дата публикации

RADIO COMMUNICATION SYSTEM

Номер: US20130136206A1
Автор: FURUKAWA Hideto
Принадлежит: FUJITSU LIMITED

A transmission apparatus in a radio communication system which simultaneously uses a plurality of different radio frequencies to transmit signals. The apparatus includes a radio format setting portion, which is provided for each transmission frequency of the plurality of different radio frequencies and separately sets a radio format of transmission signals for each transmission frequency; and a transmitter, which is provided for each transmission frequency of the plurality of different radio frequencies and transmits signals at each of said transmission frequencies. Each radio format setting portion sets a pilot length of the transmission signals separately for each transmission frequency of the plurality of different radio frequencies. 1a radio format setting portion, which is provided for each transmission frequency of the plurality of different radio frequencies and separately sets a radio format of transmission signals for each transmission frequency; anda transmitter, which is provided for each transmission frequency of the plurality of different radio frequencies and transmits signals at each of said transmission frequencies,wherein each radio format setting portion sets a pilot length of the transmission signals separately for each transmission frequency of the plurality of different radio frequencies.. A transmission apparatus in a radio communication system which simultaneously uses a plurality of different radio frequencies to transmit signals, comprising: This application is a Divisional Application of U.S. application Ser. No. 11/819,410, filed on Jun. 27, 2007, now pending, which is a continuation of International Patent Application PCT/JP2005/000057, filed Jan. 6, 2005, the contents of each are herein wholly incorporated by reference.The present invention relates to a radio communication system which uses multiple bands or a plurality of different radio frequencies, and in particular relates to a radio communication system, and a transmission apparatus ...

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Номер записи: 42
30-05-2013 дата публикации

LINEAR FET FEEDBACK AMPLIFIER

Номер: US20130137383A1
Автор: Kobayashi Kevin Wesley
Принадлежит: RF MICRO DEVICES, INC.

A circuit that includes a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal received through the input node is disclosed. The circuit has a resistor-inductor-capacitor (RLC) type frequency bias feedback network communicatively coupled between the output transistor and the input node for providing biasing to the Darlington transistor pair as well as for adjusting at least one characteristic of an amplified version of the input signal that passes through the input transistor and into the frequency bias network. The circuit further includes a feedback coupling network coupled between the output node and the input node for feeding back to the input node a portion of the amplified version of the input signal that passes through the input transistor. 1. A circuit comprising:a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal received through an input node; a bias transistor coupled between a feedback coupling network and a fixed voltage node; and', 'a resistor-inductor-capacitor (RLC) tuning network that is tunable within a range that increases a third order intercept point (IP3) to improve an upper frequency band linearity; and, 'a frequency bias feedback network communicatively coupled between the output transistor and the input node for providing biasing to the Darlington transistor pair as well as for adjusting at least one characteristic of an amplified version of the input signal that passes through the input transistor and into the frequency bias feedback network, wherein the frequency bias feedback network comprisesthe feedback coupling network coupled between the output node and the input node for feeding back to the input node a portion of the amplified version of the input signal that passes through the input transistor.2. The ...

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Номер записи: 43
30-05-2013 дата публикации

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

Номер: US20130137385A1
Автор: Erceg Vinko, Fischer Matthew James, Hansen Christopher J., Karaoguz Jeyhan, Mese Murat, Nandagopalan Saishankar, Trachewsky Jason A.
Принадлежит: BROADCOM CORPORATION

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 ...

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Номер записи: 44
06-06-2013 дата публикации

HIGH-DEFINITION MULTIMEDIA INTERFACE DATA TRANSCEIVING APPARATUS

Номер: US20130142229A1
Автор: Lin Shih-Min
Принадлежит:

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 ...

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Номер записи: 45
13-06-2013 дата публикации

RADIO FREQUENCY TRANSCEIVER

Номер: US20130148703A1
Автор: CHOI Kihwa, KIM Ikgon
Принадлежит: SAMSUNG ELECTRONICS CO. LTD.

A radio frequency transceiver which can support various frequency conversion schemes is provided. The radio frequency transmitter includes a first low pass filter, a second low pass filter, a first filter input port connected to an input terminal of the first low pass filter, a second filter input port connected to an input terminal of the second low pass filter, a first filter output port connected to an output terminal of the first low pass filter, a second filter output port connected to an output terminal of the second low pass filter, an I/Q modulator, an I input port connected to an I input terminal of the I/Q modulator, a Q input port connected to a Q input terminal of the I/Q modulator; and a Radio Frequency (RF) output port connected to an output terminal of the I/Q modulator. 1. A radio frequency transmitter comprising:a first low pass filter;a second low pass filter;a first filter input port connected to an input terminal of the first low pass filter;a second filter input port connected to an input terminal of the second low pass filter;a first filter output port connected to an output terminal of the first low pass filter;a second filter output port connected to an output terminal of the second low pass filter;an I/Q modulator;an I input port connected to an I input terminal of the I/Q modulator;a Q input port connected to an Q input terminal of the I/Q modulator; anda Radio Frequency (RF) output port connected to an output terminal of the I/Q modulator.2. The radio frequency transmitter of claim 1 , wherein the radio frequency transmitter is implemented as a chip claim 1 , and the first filter input port claim 1 , the second filter input port claim 1 , the first filter output port claim 1 , the second filter output port claim 1 , the I input port claim 1 , the Q input port claim 1 , and the radio frequency output port are implemented as a pin mounted on the chip.3. The radio frequency transmitter of claim 2 , further comprising an amplifier unit ...

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Номер записи: 46
20-06-2013 дата публикации

SINGLE CHANNEL FULL DUPLEX WIRELESS COMMUNICATION

Номер: US20130155913A1
Автор: Sarca Octavian
Принадлежит: REDLINE COMMUNICATIONS INC.

A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function. 1. A single channel full duplex wireless communication system , comprising:a processor;a transmitter coupled to the processor, the transmitter transmitting a transmission signal via a transmission path;a receiver coupled to the processor, the receiver receiving a received signal via a reception path, wherein the transmitter and the receiver utilize one channel, at the same time, to transmit and receive said transmission and received signals, the transmission signal causing self-interference;a secondary transmission path coupled to the transmitter; andthe processor estimating a first transfer function and feeding the secondary transmission path with the transmission signal adjusted by the first transfer function in such a way that the secondary transmission path signal reduces the transmission signal leaked to the reception path;a combining element coupled to the receiver, the combining element being configured to combine the ...

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Номер записи: 47
20-06-2013 дата публикации

AMPLIFIERS AND TRANSCEIVER DEVICES USING THE SAME

Номер: US20130156079A1
Автор: Chung Yuan-Hung, Shih Yi-Shing
Принадлежит: MEDIATEK INC.

An amplifier is provided. The amplifier includes a pair of first input transistors, a first load, and a first canceling circuit. The pair of first input transistors is coupled between a pair of first differential nodes and a reference voltage source, for receiving a pair of input signals. The first load is coupled to the pair of first differential nodes and a pair of differential output terminals of the amplifier. The first canceling circuit is coupled between the first differential nodes. The canceling circuit is capable of balancing voltages, respectively, at the first differential nodes when the amplifier is turned off. 1. An amplifier , comprising:a pair of first input transistors, coupled between a pair of first differential nodes and a reference voltage source, for receiving a pair of input signals;a first load coupled to the pair of first differential nodes and a pair of differential output terminals of the amplifier; anda first canceling circuit, coupled between the first differential nodes, for balancing voltages, respectively, at the first differential nodes when the amplifier is turned off.2. The amplifier as claimed in claim 1 , wherein the first canceling circuit comprises:a first transistor having a first electrode directly connected to one of the first differential nodes, a second electrode directly connected to the other of the first differential nodes, and a control electrode receiving a first control signal,wherein when the amplifier is turned off, the first transistor is turned on by the first control signal to balance the voltages, respectively, at the first differential nodes.3. The amplifier as claimed in claim 1 , wherein the first canceling circuit comprises:a first transistor having a first electrode coupled to one of the first differential nodes, a second electrode coupled to the other of the first differential nodes, and a control electrode receiving a first control signal;a second transistor having a first electrode coupled to the ...

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Номер записи: 48
20-06-2013 дата публикации

WIRELESS COMMUNICATION APPARATUS AND CONTROL METHOD THEREFOR

Номер: US20130157586A1
Автор: Saito Katsuo
Принадлежит: CANON KABUSHIKI KAISHA

A wireless communication apparatus for performing wireless communication using an antenna selected from a plurality of antennas. A received power detection unit detects received power received by an antenna selected from the plurality of antennas. A reflected power detection unit detects transmitted reflected power of the selected antenna. A switching unit switches an antenna used for communication to another antenna based on a variation of the received power detected by the received power detection unit and an amount of electric power of the reflected power detected by the reflected power detection unit. 1. A wireless communication apparatus for performing wireless communication using an antenna selected from a plurality of antennas comprising:a received power detection unit which detects received power received by an antenna selected from the plurality of antennas;a reflected power detection unit which detects transmitted reflected power of the selected antenna; anda switching unit which switches an antenna used for communication to another antenna based on a variation of the received power detected by the received power detection unit and an amount of electric power of the reflected power detected by the reflected power detection unit.2. The apparatus according to claim 1 , wherein when the variation of the received power detected by the received power detection unit exceeds a first threshold claim 1 , the switching unit switches the antenna used for communication to another antenna.3. The apparatus according to claim 1 , wherein when the reflected power detected by the reflected power detection unit exceeds a second threshold claim 1 , the switching unit switches the antenna used for communication to another antenna.4. The apparatus according to claim 1 , further comprisinga contact detection unit which detects contact of an object at a predetermined position from the selected antenna on a housing of the wireless communication apparatus,wherein when the contact ...

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Номер записи: 49
20-06-2013 дата публикации

TRANSMISSION-RECEPTION DEVICE

Номер: US20130157589A1
Автор: Morita Tadashi, Shirakata Naganori
Принадлежит: Panasonic Corporation

A transmission-reception device includes a radio frequency section that performs a frequency conversion on a signal which is modulated using a single carrier transmission system, a correction coefficient multiplier that multiplies a frequency domain signal by a distortion correction coefficient in the frequency conversion of the radio frequency section to correct a distortion, a first transformer that converts a time domain signal into a frequency domain signal at a time of reception, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of transmission, and a second transformer that converts a time domain signal into a frequency domain signal at a time of transmission, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of reception. 1. A transmission-reception device , comprising:a radio frequency section that performs a frequency conversion on a signal which is modulated using a single carrier transmission system;a correction coefficient multiplier that multiplies a frequency domain signal by a distortion correction coefficient in the frequency conversion of the radio frequency section to correct a distortion;a first transformer that converts a time domain signal into a frequency domain signal at a time of reception, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of transmission; anda second transformer that converts a time domain signal into a frequency domain signal at a time of transmission, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of reception.2. The transmission-reception device according to claim 1 , whereinthe first transformer converts a loopback signal from a ...

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Номер записи: 50
20-06-2013 дата публикации

Methods for Reducing Near-Field Radiation and Specific Absorption Rate (SAR) Values in Communications Devices

Номер: US20130157592A1
Автор: Caimi Frank M., Chen Li, JR. Paul A., Kishler Mark W., Montgomery Mark T., Tornatta
Принадлежит: SkyCross, Inc.

A method is provided for reducing near-field radiation and specific absorption rate values in a communications device that includes a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure. The method includes adjusting the relative phase between signals fed to neighboring antenna ports of the antenna structure such that a signal fed to the one antenna port has a different phase than a signal fed to the neighboring antenna port to provide antenna pattern control and to increase gain in a selected direction toward a receive point. The method features using a transmit power lower than the transmit power used in a non-pattern control operation of the antenna structure such that the communications device obtains generally equivalent wireless link performance with the receive point using reduced transmit power compared to the non-pattern control operation, thereby reducing the specific absorption rate. 1. A method of reducing near-field radiation and specific absorption rate (SAR) values in a communications device , said communications device including a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure , said antenna structure comprising: a plurality of antenna ports operatively coupled to the circuitry; a plurality of antenna elements , each operatively coupled to a different one of the antenna ports; and one or more connecting elements electrically connecting the antenna elements at a location on each antenna element that is spaced apart from an antenna port coupled thereto to form a single radiating structure and such that electrical currents on one antenna element flow to a connected neighboring antenna element and generally bypass the antenna port coupled to the neighboring antenna element , the electrical currents flowing through the one antenna ...

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Номер записи: 51
27-06-2013 дата публикации

Apparatus and method for controlling screen brightness in a mobile terminal

Номер: US20130162611A1
Автор: Eo-Jin LIM, Sung-Hwan Baek
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and a method for controlling screen brightness in a mobile terminal are provided. Particularly, an apparatus and a method for providing information regarding a currently set screen brightness degree and simplifying a process for changing a brightness control mode in a mobile terminal are provided. A sensing unit of the terminal determines an amount of ambient light during an automatic brightness control mode that controls the screen brightness, and a screen manager controls the screen brightness according to either a user mode or an automatic mode where the transition from the automatic mode to the user mode is simplified.

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Номер записи: 52
27-06-2013 дата публикации

Radio-frequency transceiving front-end apparatus using passive elements in wireless communication system

Номер: US20130163488A1
Автор: Heon Kook KWON, Hyun Kyu CHUNG, Jae Joon Park, Myung Don Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Disclosed is a radio-frequency front-end apparatus that can be used in wireless communication systems performing transmission/reception by using a single antenna. The radio-frequency transceiving front-end apparatus using passive elements in a wireless communication system includes: a transmitting unit's hybrid coupler configured to divide and output a transmission signal into two outputs having a phase difference of 90°; a first circulator configured to receive a first output of the hybrid coupler through a first terminal thereof and output the received first output through a second terminal thereof; a second circulator configured to receive a second output of the hybrid coupler through a first terminal thereof and output the received second output through a second terminal thereof; and an output unit's hybrid coupler configured to receive transmission signals from the second terminal of the first circulator and the second terminal of the second circulator, and combine and output the received signals.

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Номер записи: 53
27-06-2013 дата публикации

Systems and Methods for Multi-Channel Transceiver Communications

Номер: US20130163648A1
Автор: Paul A. KENNARD
Принадлежит: Aviat US Inc

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.

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Номер записи: 54
27-06-2013 дата публикации

OUTPUT STAGE FOR WIRELESS TRANSMITTER

Номер: US20130165055A1
Автор: Castello Rinaldo, ROSSI Paolo, Sacchi Enrico
Принадлежит: MARVELL WORLD TRADE LTD

In one embodiment, an apparatus includes a first block configured to decompose an input signal into a positive component and a negative component. The apparatus further includes a second block configured to generate a mixer positive driver component from the positive component and a mixer negative driver component from the negative component and input the mixer positive driver component and the negative driver component into a mixer for a wireless transmitter. 1. An apparatus comprising:a first block configured to decompose an input signal into a positive component and a negative component; anda second block configured to generate a mixer positive driver component from the positive component and a mixer negative driver component from the negative component and input the mixer positive driver component and the negative driver component into a mixer of a wireless transmitter.2. The apparatus of claim 1 , further comprising a buffer including an input to receive the input signal.3. The apparatus of claim 2 , wherein the buffer includes a first input to receive a positive current in the input signal and a second input to receive a negative current in the input signal.4. The apparatus of claim 1 , wherein the first block and the second block include transistors of a first type and a second type.5. The apparatus of claim 4 , wherein the second block comprises:a first output branch including a first transistor of the first type and a second transistor of the second type; anda second output branch including a third transistor of the first type and a fourth transistor of the second type,wherein the first current passes through the first transistor and the third transistor and the second current passes through the second transistor and the fourth transistor.6. The apparatus of claim 5 , wherein:the first output branch is coupled to a first input of the mixer, andthe second output branch is coupled to a second input of the mixer.7. The apparatus of claim 5 , wherein:a gate of ...

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Номер записи: 55
27-06-2013 дата публикации

RECEPTION DEVICE AND IMAGE DISPLAY APPARATUS

Номер: US20130165064A1
Автор: Fujita Kosuke, Oishi Katsumi
Принадлежит: SONY CORPORATION

A reception device includes first and second antennas that receive the same kind of electric wave; a third antenna that receives a different kind of electric waves from that of the first and the second antennas; an antenna switching switch that switches a first input mode of inputting the electric waves received by the first and second antennas and a second input mode of inputting the electric wave received by the third antenna; a first tuner circuit that receives the electric wave in each of the first and second input modes; and a second tuner circuit that receives the electric wave in the first input mode, wherein diversity reception for the first and second antennas is performed based on the signals output from the first and second tuner circuits in the first input mode, and wherein a signal is output from the first tuner circuit in the second input mode. 1. A reception device comprising:a first antenna and a second antenna that receive the same kind of electric wave;a third antenna that receives a different kind of electric waves from the electric wave of the first antenna and the second antenna;an antenna switching switch that switches a first input mode of inputting the electric waves received by the first antenna and the second antenna and a second input mode of inputting the electric wave received by the third antenna;a first tuner circuit that is connected to the antenna switching switch and receives the electric wave in each of the first input mode and the second input mode; anda second tuner circuit that is connected to the antenna switching switch and receives the electric wave in the first input mode,wherein diversity reception for the first antenna and the second antenna is performed on the basis of signals output from the first tuner circuit and the second tuner circuit in the first input mode, andwherein a signal is output from the first tuner circuit in the second input mode.2. The reception device according to claim 1 , wherein the antenna ...

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Номер записи: 56
11-07-2013 дата публикации

RF DUPLEXING DEVICE

Номер: US20130176914A1
Автор: Khlat Nadim
Принадлежит: RF MICRO DEVICES, INC.

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 ...

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Номер записи: 57
11-07-2013 дата публикации

HIGH-FREQUENCY MODULE

Номер: US20130176915A1
Автор: UEJIMA Takanori
Принадлежит: MURATA MANUFACTURING CO., LTD.

A compact high-frequency module that increases isolation between a transmission-side circuit and a reception-side circuit of a duplexer includes a switch element and duplexers. The duplexers include transmission-side SAW filters and reception-side SAW filters. The transmission-side SAW filters are mounted near one edge of a multilayer body. The reception-side SAW filters are mounted near another edge opposite to the one edge of the multilayer body. The switch element is mounted at the center of the multilayer body 1. A high-frequency module comprising:a switch element arranged to selectively connect a plurality of individual terminals to a common terminal;a duplexer arranged to demultiplex a transmission signal and a reception signal in a single communication band; anda multilayer body including the switch element and the duplexer are mounted on a top surface of the multilayer body, electrodes for external connection ports provided on a bottom surface of the multilayer body opposite to the top surface, and electrode patterns defining the high-frequency module provided in inner layers of the multilayer body; whereinthe duplexer includes a transmission-side filter and a reception-side filter, the transmission-side filter having a pass band which is a frequency band of the transmission signal and having an attenuation band which is a frequency band of at least the reception signal, the reception-side filter having a pass band which is a frequency band of the reception signal and having an attenuation band which is a frequency band of at least the transmission signal, the transmission-side filter and the reception-side filter including individual housings;the transmission-side filter and the reception-side filter are separately mounted on the top surface of the multilayer body; andthe switch element is mounted between the transmission-side filter and the reception-side filter on the top surface of the multilayer body.2. The high-frequency module according to claim 1 , ...

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Номер записи: 58
11-07-2013 дата публикации

HIGH-FREQUENCY MODULE

Номер: US20130176916A1
Автор: UEJIMA Takanori
Принадлежит: MURATA MANUFACTURING CO., LTD.

A small high-frequency module has a structure such that a high-power signal is prevented from leaking to a switch device. On the top surface of a multilayer body, a switch device and a duplexer are mounted so as to be spaced apart from each other by a predetermined distance. An inductor and resistors connected to a circuit different from a transmission system circuit are mounted between the switch device and the duplexer. The inductor and the resistors are mounted such that external connection terminals connected to the switch device are on the switch device side and external connection terminals connected to external connection power system port electrodes of the high-frequency module are on the duplexer side. 1. A high-frequency module comprising:a switch device arranged to selectively connect a common terminal to a plurality of individual terminals;a duplexer arranged to separate a transmission signal and a reception signal in a single communication band;a multilayer body including the switch device and the duplexer mounted on a top surface of the multilayer body, external connection port electrodes provided on a bottom surface of the multilayer body, and predetermined electrode patterns defining the high-frequency module provided on internal layers of the multilayer body; anda surface-mount circuit device mounted on the top surface of the multilayer body; whereinthe surface-mount circuit device is connected at a location different from a transmission path for the transmission signal and is mounted on the multilayer body between the switch device and the duplexer.2. The high-frequency module according to claim 1 , whereinthe duplexer has a quadrangular or substantially quadrangular shape when viewed in plan from a stacking direction of the internal layers of the multilayer body;a transmission signal input terminal, a common terminal, and a reception signal output terminal are provided on the multilayer body adjacent to sides of the duplexer; andthe duplexer is ...

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Номер записи: 59
18-07-2013 дата публикации

Method and apparatus for controlling brightness of display in mobile device

Номер: US20130181960A1
Автор: Eelhyoung CHOI, Hyungtaek RYOO, Jinsoo Kim, Seungkoo JEONG
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and an apparatus for automatically controlling the brightness of a display unit in a mobile device according to external illuminance are provided. The brightness control method includes measuring a gradient of the mobile device, measuring an external illuminance through at least one of an illuminance sensor and a camera, depending on the measured gradient of the mobile device, and regulating the brightness of the mobile device, based on the measured external illuminance.

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Номер записи: 60
18-07-2013 дата публикации

SCALABLE HIGH-BANDWIDTH CONNECTIVITY

Номер: US20130183903A1
Автор: Kyles Ian A., McCormack Gary D.
Принадлежит:

A scalable, high-bandwidth connectivity architecture for portable storage devices and memory modules may utilize EHF communication link chip packages mounted in various two-dimensional and three-dimensional configurations on planar surfaces such as printed circuit boards. Multiple electromagnetic communication links between devices distributed on major faces of card-like devices may be provided with respectively aligned pairs of communication units on each device. Adjacent communication units on a printed circuit board may transmit or receive electromagnetic radiation having different polarization, such as linear or elliptical polarization. Power and communication between communication devices may both be provided wirelessly. 1. An EHF communication unit comprising a die including a transmitter circuit and a receiver circuit; a first antenna operatively connected to the transmitter circuit; a second antenna operatively connected to the receiver circuit; and dielectric material encapsulating and holding in relative spaced relationship the first antenna , the second antenna , and the die , the first and second antennas transmitting or receiving electromagnetic radiation having different respective polarization characteristics.2. The communication unit of claim 1 , wherein the first and second antennas transmit or receive linearly polarized electromagnetic radiation and a first polarization direction vector of radiation transmitted by the first antenna is oriented orthogonally to a second polarization direction vector of radiation received by the second antenna.3. The communication unit of claim 1 , wherein the first antenna transmits one of right-handed and left-handed polarized electromagnetic radiation claim 1 , and the second antenna receives the other of right-handed and left-handed polarized electromagnetic radiation.4. The communication unit of claim 1 , wherein the die has a length and a width; the first antenna is located at a first port disposed at a point ...

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Номер записи: 61
18-07-2013 дата публикации

CONFIGURABLE ANTENNA STRUCTURE

Номер: US20130183911A1
Автор: Behzad Arya Reza, Erceg Vinko, Ibrahim Brima B., Karaoguz Jeyhan, Rofougaran Ahmadreza, Rosmann David, Walley John
Принадлежит: BROADCOM CORPORATION

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 ...

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Номер записи: 62
25-07-2013 дата публикации

SYSTEMS AND METHODS OF OPERATIONAL MODES FOR A TRANSCEIVER

Номер: US20130188529A1
Автор: Gammel Peter Ledel, Poulin Grant Darcy
Принадлежит: SIGE SEMICONDUCTOR, INC.

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 ...

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Номер записи: 63
25-07-2013 дата публикации

DYNAMIC MEDIUM SWITCH IN CO-LOCATED PLC AND RF NETWORKS

Номер: US20130188673A1
Автор: CHOI Soon-Hyeok, Fu Minghua, Liang Robert W., LU Xiaolin, Sandeep Bhadra, SUN Yanjun, XHAFA Ariton E., Xu Gang, Yim Susan
Принадлежит: TEXAS INSTRUMENTS INCORPORATED

An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to receive, from the first transceiver, a first signal; and cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium. 1. An electronic communication device comprising:a first transceiver capable of a bi-directional communication session on a first communication medium;a second transceiver capable of a bi-directional communication session on a second communication medium; and receive, from the first transceiver, a first signal; and', 'cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium., 'a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to'}2. The device of claim 1 , wherein the control logic is further configured toreceive, from the first transceiver or the second transceiver, a second signal; andcause, in response to the second signal, data received and transmitted by the second transceiver on the second communication medium to be received and transmitted instead by the first transceiver on the first communication medium.3. The device of claim 2 , wherein the control logic is configured to cause claim 2 , through the ...

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Номер записи: 64
25-07-2013 дата публикации

REVERBERATION REDUCTION DEVICE AND REVERBERATION REDUCTION METHOD

Номер: US20130188798A1
Автор: Otani Takeshi, SUZUKI Masanao, Togawa Taro
Принадлежит: FUJITSU LIMITED

A reverberation reduction device includes, a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, calculating reverberation characteristics in response to an impulse response of a path of a sound from an audio output unit to an audio input unit by determining the impulse response from a first audio signal and a second audio signal that represents a sound that the audio input unit has picked up from the first audio signal reproduced by the audio output unit, and estimating a distance from the audio input unit to a sound source in accordance with at least one of a volume and a frequency characteristic of a third audio signal that represents a sound that the audio input unit has picked up from a sound from the sound source; correcting the reverberation characteristics so that the reverberation characteristics. 1. A reverberation reduction device comprising:a processor; anda memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute,calculating reverberation characteristics in response to an impulse response of a path of a sound from an audio output unit to an audio input unit by determining the impulse response from a first audio signal and a second audio signal that represents a sound that the audio input unit has picked up from the first audio signal reproduced by the audio output unit,estimating a distance from the audio input unit to a sound source in accordance with at least one of a volume and a frequency characteristic of a third audio signal that represents a sound that the audio input unit has picked up from a sound from the sound source;correcting the reverberation characteristics so that the reverberation characteristics become larger as the estimated distance becomes longer; andestimating a frequency spectrum of a reverberation component included in the third audio signal in response to the corrected reverberation ...

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Номер записи: 65
25-07-2013 дата публикации

AUDIO PROCESSING DEVICE AND AUDIO PROCESSING METHOD

Номер: US20130188799A1
Автор: Otani Takeshi, SUZUKI Masanao, Togawa Taro
Принадлежит:

An audio processing device includes a reverb property estimating unit that estimates a reverb property at each frequency on the basis of a first audio signal and a second audio signal representing sounds of the first audio signal output by an audio output unit and collected by an audio input unit, a gain calculating unit that determines an attenuating ratio for a component of the first audio signal at each frequency such that the larger the reverb property at the frequency is, the larger the attenuating ratio for the component at the frequency becomes, and a correcting unit that attenuates the first audio signal at the each frequency in accordance with the attenuating ratio determined for each frequency. 1. An audio processing device comprising:a reverb property estimating unit that estimates a reverb property at each frequency on the basis of a first audio signal and a second audio signal representing sounds of the first audio signal output by an audio output unit and collected by an audio input unit;a gain calculating unit that determines an attenuating ratio for a component of the first audio signal at each frequency such that the larger the reverb property at the frequency is, the larger the attenuating ratio for the component at the frequency becomes; anda correcting unit that attenuates the first audio signal at the each frequency in accordance with the attenuating ratio.2. The audio processing device according to claim 1 , wherein the gain calculating unit calculates a rate of a reverb amount indicating magnitude of the reverb property to a deformed amount of the first audio signal caused by a multiplication of the attenuating ratio claim 1 , and determines the attenuating ratio such that the larger the rate is claim 1 , the larger the attenuating ratio becomes.3. The audio processing device according claim 2 , wherein the gain calculating unit estimates a first degradation degree in sound quality of the first audio signal caused by the deformed amount claim ...

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Номер записи: 66
25-07-2013 дата публикации

INTEGRATED CIRCUIT DEVICE, WIRELESS COMMUNICATION UNIT AND METHOD OF MANUFACTURE THEREFOR

Номер: US20130189937A1
Автор: Gauthier Laurent
Принадлежит: Freescale Semiconductor, Inc.

An integrated circuit device comprising at least one radio frequency (RF) transceiver module. The at least one RF transceiver module includes a plurality of low noise amplifiers (LNAs) operably coupled to external contacts of the integrated circuit device and arranged to receive an RF signal from the respective external contact, amplify the received RF signal, and to output the amplified RF signal. Each transceiver module further includes a plurality of power amplifier (PA) modules operably coupled to the external contact of the integrated circuit device, and arranged to receive an RF signal to be transmitted, amplify the received RF signal to be transmitted, and output the amplified signal. The plurality of LNAs and the plurality of PAs are selectively configurable to operate in at least a first, multi-antenna configuration and a second, single antenna high transmit power configuration. 1. An integrated circuit device comprising: a plurality of low noise amplifiers (LNAs) having respective input ports operably coupled to at least one external contact of the integrated circuit device and arranged to receive a first RF signal from the at least one external contact and output an amplified received first RF signal, and', 'the plurality of LNAs and the plurality of PAs are selectively configurable to operate in at least a first, multi-antenna configuration and a second, single antenna high transmit power configuration.', 'a plurality of power amplifiers (PAs) having respective output ports operably coupled to the at least one external contact of the integrated circuit device, and arranged to receive at respective power amplifier input ports a second RF signal and output an amplified second RF signal to be transmitted, wherein'}], 'at least one radio frequency (RF) transceiver module, wherein the at least one RF transceiver module comprises2. The integrated circuit device of wherein the plurality of LNAs and the plurality of PAs are selectively configurable to operate in ...

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Номер записи: 67
01-08-2013 дата публикации

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

Номер: US20130196609A1
Автор: Ancora Andrea, Brunel Dominique, Noel Laurent
Принадлежит: ST-Ericsson SA

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 ...

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Номер записи: 68
08-08-2013 дата публикации

WIDEBAND TRANSMITTER/RECEIVER ARRANGEMENT FOR MULTIFUNCTIONAL RADAR AND COMMUNICATION

Номер: US20130201050A1
Автор: Hellsten Hans
Принадлежит: SAAB AB

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 ...

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Номер записи: 69
08-08-2013 дата публикации

Tunable duplexer architecture

Номер: US20130201880A1
Автор: Marcus Granger-Jones, Nadim Khlat, Ruediger Bauder
Принадлежит: RF Micro Devices Inc

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.

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Номер записи: 70
08-08-2013 дата публикации

SEMICONDUCTOR DEVICE AND COMMUNICATION SYSTEM INCLUDING THE SAME

Номер: US20130203361A1
Автор: HIJIOKA Kenichiro, Yamaguchi Koichi
Принадлежит: RENESAS ELECTRONICS CORPORATION

Disclosed is a semiconductor device including a semiconductor chip and a semiconductor package. The semiconductor package includes an antenna formed of a lead frame, a first wire that connects the antenna and a first electrode pad of the semiconductor chip, and a second wire that connects the antenna and a second electrode pad of the semiconductor chip. The semiconductor chip is disposed in one of four regions in the semiconductor package sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package. A centroid of the semiconductor chip is positioned outside a closed curve composed of a straight line segment connecting a first connection point where the antenna and the first wire are connected and a second connection point where the antenna and the second wire are connected, and a line connecting the first and second connection points along the antenna. 1. A semiconductor device comprising:a semiconductor chip; anda semiconductor package that seals the semiconductor chip and has a substantially rectangular planar shape, wherein first and second electrode pads; and', 'at least one of a transmission circuit that transmits a signal via the first and second electrode pads and a reception circuit that receives the signal via the first and second electrode pads,, 'the semiconductor chip comprises an antenna formed of a lead frame;', 'a first wire that connects the antenna and the first electrode pad; and', 'a second wire that connects the antenna and the second electrode pad,, 'the semiconductor package comprisesthe semiconductor chip is disposed in one of four regions in the semiconductor package that are sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package, anda centroid of the semiconductor chip is positioned outside a closed curve that is composed of a line segment connecting by a straight line a first connection point where the antenna and the first wire are connected ...

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Номер записи: 71
08-08-2013 дата публикации

Method and System for a Baseband Cross-Bar

Номер: US20130203368A1
Автор: Morten Damgaard, Raja Pullela, Sheng Ye
Принадлежит: Individual

Methods and systems for a baseband cross-bar may comprise receiving one or more radio frequency (RF) signals in a wireless communication device via antennas coupled to a plurality of receiver paths in the wireless device. The received RF signals may be converted to baseband frequencies. One or more of the down-converted signals may be coupled to receiver paths utilizing a baseband cross-bar. The baseband cross-bar may comprise a plurality of switches, which may comprise CMOS transistors. In-phase and quadrature signals may be processed in the one or more of the plurality of receiver paths. The one or more RF signals comprise cellular signals and/or global navigation satellite signals. A single-ended received RF signal may be converted to a differential signal in one or more of the plurality of receiver paths. The baseband cross-bar may be controlled utilizing a reduced instruction set computing (RISC) processor.

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Номер записи: 72
15-08-2013 дата публикации

MICRO ANTENNA FEEDER FOR WIDE BAND

Номер: US20130210372A1
Автор: LEE Jun Hee, Park Chan Goo
Принадлежит: WIWORLD CO., LTD

The present invention relates to a micro wideband antenna feeder, and more particularly, to a micro wideband antenna feeder in which a quad scheme antenna and a cross dipole antenna are coupled to each other. The micro wideband antenna feeder includes: a quad scheme antenna; and a cross dipole antenna installed orthogonal to the quad scheme antenna and irradiating current distribution orthogonal to current distribution irradiated from the quad scheme antenna. According to preferred embodiments of the present invention, since phases 0, 90, 180, and 270 can be shifted by being designed as a feeding network PCB, a circularly polarized wave can be implemented. 1. A micro wideband antenna feeder , comprising:a quad scheme antenna; anda cross dipole antenna installed orthogonal to the quad scheme antenna and irradiating current distribution orthogonal to current distribution irradiated from the quad scheme antenna.2. The micro wideband antenna feeder of claim 1 , further comprising:a transmission circuit substrate coupled to the quad scheme antenna or the cross dipole antenna; anda reception circuit substrate coupled to the quad scheme antenna or the cross dipole antenna,wherein both transmission and reception bands meet wideband circularly polarized characteristics.3. The micro wideband antenna feeder of claim 2 , wherein the quad scheme antenna or the cross dipole antenna share the same transmission/reception focus and space as an assembled parabola dish.4. The micro wideband antenna feeder of claim 2 , wherein the transmission circuit substrate includes a transmission circuit pattern substrate and a transmission circuit cover substrate and the reception circuit substrate includes a reception circuit pattern substrate and a reception circuit cover substrate claim 2 ,wherein the transmission circuit pattern substrate and the reception circuit pattern substrate include:a signal inputting unit;a signal distributing and phase shifting unit distributing a signal generated ...

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Номер записи: 73
15-08-2013 дата публикации

Systems and Methods for Tuning an Antenna for a Frequency Modulation Transceiver

Номер: US20130210373A1
Автор: Dubash Noshir, JR. Thomas E., McConnell Richard J., Ricks
Принадлежит: CSR Technology Inc.

Systems and methods for tuning an antenna for a frequency modulation (FM) transceiver are provided. A representative system includes: a network of electrical adjustable passive components that receives and sends radio frequency (RF) signals to a receiver circuitry via the network of electrical adjustable passive components. The receiver circuitry determines the received signal strength indication (RSSI) of the RF signal. The system further includes a transmitter circuitry that transmits RF signals via the network of electrical adjustable passive components, and a peak detector circuitry that receives and determines a voltage output of the RF signals from the variable capacitors. An auto-tune circuitry receives the RSSI and output value from the receiver circuitry and the peak detector circuitry, respectively. The auto-tune circuitry is configured to adjust capacitance values of at least one of the serial variable capacitor and the parallel variable capacitor based on the RSSI and the voltage output during the reception and transmission of the RF signals, respectively. 1. A handheld device comprising:a receiver circuitry that receives RF signals and determines the received signal strength indication (RSSI) of the RF signals; andan antenna auto-tune circuitry that receives the RSSI, the antenna auto-tune circuitry being configured to adjust a value of at least one of its electrical component based on the RSSI during the reception of the RF signals.2. The handheld device as defined in claim 1 , wherein the at least one of its electrical component includes at least one of the following passive components: one or more variable parallel capacitors claim 1 , one or more variable serial capacitors claim 1 , one or more parallel capacitors claim 1 , one or more serial capacitors claim 1 , one or more variable parallel inductors claim 1 , one or more variable serial inductors claim 1 , one or more parallel inductors claim 1 , one or more serial inductors claim 1 , one or more ...

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Номер записи: 74
22-08-2013 дата публикации

METHOD AND ARRANGEMENT FOR FEEDER SHARING IN A TELECOMMUNICATION SYSTEM

Номер: US20130215800A1
Автор: Berglund Bo, Skärby Ulf
Принадлежит: Unwired Planet, LLC

A filter arrangement comprises a first terminal that handles duplex radio antenna feeder signals for at least two transceiver modules, a second terminal that handles at least duplex signals for a first transceiver module, a third terminal that outputs a first multi carrier power amplifier system input signal, the input signal representing a transmit signal from the first transceiver module, and a fourth terminal that receives a multi carrier power amplifier system output signal. The output signal includes an amplified representation of the transmit signals from the two transceiver modules. The first and second terminals are connected via first a single filter, the second and third terminals are connected via a second single filter, and the fourth and first terminals are connected via a third single filter. 1. A filter arrangement , comprising:a first terminal arranged for handling duplex radio antenna feeder signals for at least two transceiver modules;a second terminal arranged for handling at least duplex signals for a first transceiver module;a third terminal arranged for outputting a first multi carrier power amplifier system input signal, said input signal representing a transmit signal from said first transceiver module;a fourth terminal arranged for receiving a multi carrier power amplifier system output signal, said output signal comprising an amplified representation of the transmit signals from said at least two transceiver modules;wherein said first terminal and said second terminal are connected via a first single filter, said second terminal and said third terminal are connected via a second single filter; andsaid fourth terminal and said first terminal are connected via a third single filter;a fifth terminal arranged for receiving received signals for a second transceiver module from said first transceiver module;a sixth terminal arranged for handling duplex signals for said second transceiver module; and,a seventh terminal arranged for outputting a ...

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Номер записи: 75
22-08-2013 дата публикации

INTEGRATED CIRCUIT AND WIRELESS COMMUNICATION APPARATUS

Номер: US20130217344A1
Автор: Kondo Fumitaka
Принадлежит: SONY CORPORATION

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- ...

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Номер записи: 76
29-08-2013 дата публикации

APPARATUS FOR WIDEBAND TRANSMISSION AND RECEPTION FOR MULTIBAND

Номер: US20130223488A1
Автор: Jeong Byung Jang, Kim Sang Won
Принадлежит: Electronics and Telecommunications Research Institute

A wideband transmitting and receiving apparatus including a local oscillator (LO) synthesizer providing a constant output to a wide band is provided. The LO synthesizer may generate LO signals of different amplitudes according to channels. The LO synthesizer may store the amplitudes of the LO signals different according to the channels and compensate the amplitudes of the LO signals using the stored amplitudes. Accordingly, the LO synthesizer may output the LO signals of uniform amplitudes irrespective of the channels. 1. A transmitting and receiving apparatus comprising:a local oscillator (LO) to generate an LO signal;a level detector to measure amplitude of the LO signal; anda variable amplifier to control the amplitude of the LO signal.2. The transmitting and receiving apparatus of claim 1 , whereinthe amplitude of the LO signal is varied according to a frequency band of the LO signal, andthe variable amplifier controls the amplitude of the LO signal to be uniform.3. The transmitting and receiving apparatus of claim 1 , further comprising:a distributor; anda plurality of low pass filters,wherein the distributor supplies the amplitude-controlled LO signal to the plurality of low pass filters.4. The transmitting and receiving apparatus of claim 3 , further comprising:an antenna unit to receive a received signal of a high frequency band; anda plurality of switches corresponding to the plurality of low pass filters, respectively,wherein the plurality of switches select any one LO signal among LO signals passed through the plurality of low pass filters, according to the frequency band of the received signal.5. The transmitting and receiving apparatus of claim 4 , wherein the selected LO signal is used to convert the received signal to a baseband signal.6. The transmitting and receiving apparatus of claim 5 , further comprising:an in-phase quadrature (IQ) calculation unit to calculate an average of IQ signals of a baseband according to a low pass filter that passed the ...

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Номер записи: 77
29-08-2013 дата публикации

WIRELESS COMMUNICATION DEVICE, METHOD FOR CONTROLLING WIRELESS COMMUNICATION DEVICE, PROGRAM, AND STORAGE MEDIUM

Номер: US20130225098A1
Автор: Ikehata Kazuhiko
Принадлежит: SHARP KABUSHIKI KAISHA

In a wireless communication device (), adjustment means (matching controlling means ()) changes a reactance of a matching section (), determination means (calculation means (), matching controlling means ()) determines whether a resonance frequency of an antenna () exists on a side higher than or lower than the operation frequency of the antenna () on the basis of a change in an intensity of a signal, which change is caused by a change in the reactance and is detected by a signal intensity detection section (), and the adjustment means adjusts the reactance so that the resonance frequency is closer to the operation frequency on the basis of a result of determination of the determination means. 1. A wireless communication device , comprising:an antenna;a wireless controlling section for processing a signal that the antenna transmits and receives;a matching section which is connected between the antenna and the wireless controlling section and has a variable reactance;signal intensity detection means for detecting an intensity of the signal passed between the antenna and the wireless controlling section;adjustment means for changing the variable reactance of the matching section;determination means for determining whether a resonance frequency of the antenna exists on a side higher than or lower than an operation frequency of the antenna on the basis of a change in the intensity which is caused by a change in the variable reactance; anda storage section in which a plurality of matching adjustment values for defining the variable reactance,the adjustment means further adjusting the variable reactance to a value defined by one of the plurality of matching adjustment values so that the resonance frequency is closer to the operation frequency on the basis of a result of determination of the determination means.2. The wireless communication device as set forth in claim 1 , wherein:the operation frequency is a frequency for use in transmission via the antenna; andthe ...

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Номер записи: 78
29-08-2013 дата публикации

Wireless device with filters to support co-existence in adjacent frequency bands

Номер: US20130225107A1
Автор: Chang-Ho Lee, Christian Holenstein, Frederic Bossu, Mahim Ranjan, Mark Vernon Lane, Praveen-Kumar Sampath, Sumit Verma, Wesley Alan Sampson
Принадлежит: Qualcomm Inc

Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.

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Номер записи: 79
05-09-2013 дата публикации

Single-chip signal splitting carrier aggregation receiver architecture

Номер: US20130231064A1
Автор: Christian Holenstein, Frederic Bossu, Gurkanwal Singh Sahota, Li-Chung Chang, Prasad Srinivasa Siva Gudem
Принадлежит: Qualcomm Inc

A wireless communication device configured for receiving a multiple carrier signal is described. The wireless communication device includes a single-chip signal splitting carrier aggregation receiver architecture. The single-chip signal splitting carrier aggregation receiver architecture includes a primary antenna, a secondary antenna and a transceiver chip. The single-chip signal splitting carrier aggregation receiver architecture reuses a simultaneous hybrid dual receiver path.

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Номер записи: 80
19-09-2013 дата публикации

CLASSIFIER FOR RADIO FREQUENCY FRONT-END (RFFE) DEVICES

Номер: US20130242800A1
Автор: "OShea Helena Deirdre", GRUBER Hans Georg, Holenstein Christian
Принадлежит: QUALCOMM INCORPORATED

A method for classifying radio frequency front-end (RFFE) devices. The method includes enumerating a radio frequency front-end (RFFE) slave device according to at least one classifier bit within the RFFE slave device. The method also includes adjusting an RFFE control interface of an RFFE master device according to slave device configuration information determined from the at least one classifier bit within the RFFE slave device. 1. A method of wireless communication , comprising:enumerating a radio frequency front-end (RFFE) slave device according to at least one classifier bit within the RFFE slave device; andadjusting an RFFE control interface of an RFFE master device according to slave device configuration information determined from the at least one classifier bit within the RFFE slave device.2. The method of claim 1 , in which adjusting further comprises:configuring radio frequency plane control software or hardware of the RFFE master device according to the slave device configuration information.3. The method of claim 1 , in which adjusting further comprises:adjusting a voltage level of the RFFE control interface of the RFFE master device according to the slave device configuration information.4. The method of claim 1 , in which adjusting further comprises:adjusting a clock frequency of the RFFE master device according to the slave device configuration information.5. The method of claim 1 , in which enumerating further comprises reading a plurality of classifier bits from a classifier register within the RFFE slave device.6. The method of claim 1 , in which the slave device configuration information comprises slave device specification information claim 1 , a minimum/maximum clock frequency claim 1 , a minimum/maximum power level claim 1 , slave devices function(s) claim 1 , a preferred RF communication frequency claim 1 , an electromagnetic interference level claim 1 , and/or a device class.7. An apparatus configured for wireless communication claim 1 , the ...

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Номер записи: 81
19-09-2013 дата публикации

MULTI-RECEIVING TERMINAL ECHO CANCELLATION METHOD AND SYSTEM

Номер: US20130243183A1
Автор: Lou Shasha
Принадлежит: GOERTEK INC.

A multi-receiving terminal echo cancellation method and a multi-receiving terminal echo cancellation system are disclosed. The present invention performs echo filtering on receiving terminal signals in M channels by means of echo filters to obtain filtered receiving terminal signals in M channels, and subtracts the filtered receiving terminal signals in M channels from a sending terminal signal to obtain a system output signal in which receiving terminal echoes have been cancelled; and at the same time, the present invention buffers the receiving terminal signals in M channels by means of buffers, calculates a decorrelation matrix according to each of the receiving terminal signals in M channels that are buffered within preset length, decomposes the buffered receiving terminal signals in M channels into decorrelated receiving terminal signals in M channels by means of the decorrelation matrix, and calculates update amounts of the echo filters according to the decorrelation matrix, the decorrelated receiving terminal signals in M channels and the system output signal that is fed back. The technical solutions of the present invention can support the situation of two or more receiving terminals, and are suitable for situations in which the correlation between a plurality of receiving terminal signals is variable. 1. A multi-receiving terminal echo cancellation method suitable for use in a communication apparatus comprising M receiving terminals , M being a natural number greater than or equal to 2 , the method comprisingperforming echo filtering on receiving terminal signals in M channels by means of echo filters to obtain filtered receiving terminal signals in M channels, and subtracting the filtered receiving terminal signals in M channels from a sending terminal signal to obtain a system output signal in which receiving terminal echoes have been cancelled; andbuffering the receiving terminal signals in M channels by means of buffers at the same time, calculating a ...

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Номер записи: 82
19-09-2013 дата публикации

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

Номер: US20130244591A1
Автор: Brillant Avigdor, Pezo David, Weissman Haim M.
Принадлежит: QUALCOMM INCORPORATED

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 ...

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Номер записи: 83
19-09-2013 дата публикации

RADIO FREQUENCY ARCHITECTURE FOR SPECTRUM ACCESS NETWORKS

Номер: US20130244592A1
Автор: HU Wendong, Vlantis George A.
Принадлежит: STMicroelectronics, Inc.

Radio frequency (RF) architectures for spectrum access networks are provided. Embodiments of the invention generally provide a radio frequency (RF) architecture for customer premise equipment (CPE) for use in, for example, IEEE 802.22 wireless regional area networks (WRANs). In some embodiments, the CPE RF architecture includes two receive chains with a directional antenna and an omni-directional antenna, respectively. The CPE RF architecture facilitates opportunistic out-of-band spectrum sensing and WRAN signal receiving that are performed in parallel with data transmission. 1. A method of operating a coordinated pair of circuits in a Consumer Premise Equipment (CPE) in a Wireless Regional Area Network (WRAN) comprising:providing an out-of-band sensing circuit comprising: an omnidirectional sensing antenna; a first tunable pre-selective filter coupled to the omnidirectional sensing antenna; a first low noise amplifier coupled to the first tunable pre-selective filter; a first mixer coupled to the low noise amplifier; a first tunable local oscillator coupled to the first mixer; a first channel filter coupled to the first mixer; a first WRAN synchronization demodulator module coupled to the first channel filter; and a sensing scheme module coupled to the first channel filter;the first tunable pre-selective filter and the first tunable local oscillator receiving a first common tuning signal;the first WRAN synchronization demodulator module ignoring in-band signals but detecting other, out-of-band, WRAN signals, either from other WRAN base stations, television channels, or from other Consumer Premise Equipment;providing a transmitting and receiving circuit comprises: a directional antenna operable both as a transmitter and a receiver; a radio frequency (RF) switch coupled to the directional antenna; an in-band demodulation circuit coupled to the RF switch; and an in-band modulation circuit coupled to the RF switch; andthe out-of-band sensing circuit operating at the ...

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Номер записи: 84
19-09-2013 дата публикации

RF SWITCH IMPLEMENTATION IN CMOS PROCESS

Номер: US20130244595A1
Автор: Hasson Yaron, Mostov Alex
Принадлежит: DSP GROUP LTD

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 ...

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Номер записи: 85
19-09-2013 дата публикации

DATA COMMUNICATION TERMINAL APPARATUS

Номер: US20130244596A1
Автор: SOEKAWA Kouji
Принадлежит:

A data communication terminal apparatus is disclosed that includes a printed circuit board, a ground plane formed in the printed circuit board, a connector disposed on an end portion of the printed circuit board, and an antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane. 1. A data communication terminal apparatus comprising:a printed circuit board;a ground plane formed in the printed circuit board;a connector disposed on an end portion of the printed circuit board; andan antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane.2. The data communication terminal apparatus as claimed in claim 1 , further comprising a main antenna formed on the printed circuit board claim 1 , the main antenna being disposed on an opposite side to that of the end portion of the printed circuit board.3. The data communication terminal apparatus as claimed in claim 1 , wherein the capacitor is a capacitor chip mounted on the printed circuit board claim 1 , or a capacitor formed by a first edge portion of the antenna and a second edge portion of the ground plane claim 1 , the first edge portion and the second edge portion facing each other in plan view.4. The data communication terminal apparatus as claimed in claim 1 , wherein the ground plane is formed in a rectangular shape having a cutoff area which is formed beside the connector in plan view claim 1 , andwherein the antenna forms the loop with an edge of the ground plane, the edge being formed along the cutoff area.5. The data communication terminal apparatus as claimed in claim 1 , wherein the antenna is formed by patterning a conductive layer of the printed circuit board.6. The ...

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Номер записи: 86
26-09-2013 дата публикации

High power high isolation low current cmos rf switch

Номер: US20130252562A1
Автор: Alex Mostov, Yaron Hasson
Принадлежит: DSP Group Israel Ltd

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.

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Номер записи: 87
26-09-2013 дата публикации

POWER CONTROL TECHNIQUES FOR WIRELESS TRANSMITTERS

Номер: US20130252564A1
Автор: DARABI HOOMAN, Jensen Henrik Tholstrup, Zolfaghari Alireza
Принадлежит:

Various embodiments are disclosed relating to power control techniques for wireless transmitters. In an example embodiment, an apparatus is provided that may include a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode. 1. An apparatus comprising:a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode; anda switch coupled to an output of the DAC to couple the analog amplitude signal output of the DAC to a sampling circuit during a first transmission mode, and to couple the analog power level signal to a driver circuit during a second transmission mode;wherein one of the transmission modes includes a transmission mode that employs at least amplitude modulation, andwherein another one of the transmission modes includes a transmission mode that employs at least phase modulation or frequency modulation.2. The apparatus of wherein the DAC comprises a DAC adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode claim 1 , the first transmission mode comprising EDGE transmission mode claim 1 , the second transmission mode comprising GSM/EGSM transmission mode.3. The apparatus of and further comprising a multiplexer having an output coupled to an input of the DAC claim 1 , the multiplexer adapted to receive multiple input signals and to select for output to the DAC either the digital amplitude signal or the digital power level signal.4. The apparatus of and further comprising a driver circuit ...

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Номер записи: 88
26-09-2013 дата публикации

Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device

Номер: US20130252664A1
Автор: Nikolaos C. Haralabidis, Theodoros Georgantas
Принадлежит: Broadcom Corp

Enhanced granularity operational parameters adjustment of components and modules in a multi-band, multi-standard communication device. For supporting two-way communications, a communication device includes receiver and transmitter modules. Each module includes various components that are configurable and/or programmable based on a protocol and band pair by which the communication device is operating. The communication device is a multi-protocol and multi-band capable communication device capable to operate in accordance with any one protocol and band at a first time and another protocol and band at a second time. The various components within each of the receiver and transmitter modules can be adjusted using one or more operational parameters. In some instances, a given component can be controlled by more than one operational parameter. Alternatively, certain components are controlled only one operational parameter. The operational parameters that configure the components may be calculated, retrieved from a memory, and/or determined using other means.

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Номер записи: 89
26-09-2013 дата публикации

ANTENNA SYSTEM AND BASE STATION SYSTEM

Номер: US20130252671A1
Автор: He Pinghua, LIU Dezheng, Pu Tao, QIN Zuojun, SUN Weihua
Принадлежит: Huawei Technologies Co., Ltd.

An antenna system is disclosed. In the antenna system, a first antenna element array includes multiple antenna elements, where the antenna elements are configured to receive and transmit signals in two different polarization directions; the first combiner-splitter is configured to combine signals, received by the multiple antenna elements; the active module is configured to receive combined signals in the two different polarization directions, and perform frequency translation on the combined signals to obtain baseband signals; at least one pair of receiving channels in the antenna system corresponds to a second antenna apparatus, and are configured to receive signals output by the second antenna apparatus in the two different polarization directions; and the active module is further configured to perform frequency translation on the signals received by the at least one pair of receiving channels to obtain baseband signals. In this way, the network performance gain is improved. 1. An antenna system , comprising: a first antenna apparatus , and at least one pair of receiving channels , wherein:the first antenna apparatus comprises: a first antenna element array, a first combiner-splitter, and an active module;the first antenna element array comprises a plurality of antenna elements, wherein the antenna elements are configured to receive and transmit signals in two different polarization directions;the first combiner-splitter is configured to combine, in the two different polarization directions, signals wherein the signals are received by the plurality of antenna elements in the first antenna element array;the active module is configured to receive signals combined by the first combiner-splitter in the two different polarization directions, and to perform frequency translation on the signals combined by the first combiner-splitter to obtain baseband signals;the at least one pair of receiving channels are capable of being connected to a second antenna apparatus, ...

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Номер записи: 90
03-10-2013 дата публикации

WIRELESS COMMUNICATION DEVICE WITH EXTENDABLE ROD ANTENNA

Номер: US20130258916A1
Автор: DONG HANG
Принадлежит:

A wireless communication device includes a body, an antenna, a first baseband microchip, a second baseband microchip, and a diplexer. The antenna is telescopically assembled to the body to receive a first wireless signal and a second wireless signal. The diplexer is electronically connected to the antenna, the first baseband microchip, and the second baseband microchip. When the antenna is in a retracted state, the antenna receives the first wireless signal, and the diplexer transmits the first wireless signal to the first baseband microchip. When the antenna is in an extended state, the antenna receives the second wireless signal, and the diplexer transmits the second wireless signal to the second baseband microchip. 1. A wireless communication device , comprising:a body;an antenna telescopically assembled to the body to receive a first wireless signal and a second wireless signal;a first baseband microchip;a second baseband microchip; anda diplexer electronically connected to the antenna, the first baseband microchip, and the second baseband microchip;wherein when the antenna is in a retracted state, the antenna receives the first wireless signal, and the diplexer transmits the first wireless signal to the first baseband microchip; when the antenna is in an extended state, the antenna receives the second wireless signal, and the diplexer transmits the second wireless signal to the second baseband microchip.2. The wireless communication device as claimed in claim 1 , wherein the antenna is a telescopic antenna.3. The wireless communication device as claimed in claim 1 , wherein the body defines a receiving groove claim 1 , and the antenna is telescopically accommodated in the receiving groove.4. The wireless communication device as claimed in claim 1 , wherein the diplexer includes an input port claim 1 , a first output port claim 1 , and a second output port claim 1 , the input port is electronically connected to the antenna to receive the first wireless signal ...

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Номер записи: 91
03-10-2013 дата публикации

TUNABLE NOTCH FILTER USING FEEDBACK THROUGH AN EXISTING FEEDBACK RECEIVER

Номер: US20130259099A1
Автор: Choksi Ojas M, Gudem Prasad Srinivasa Siva, Zhuo Wei
Принадлежит: QUALCOMM INCORPORATED

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 ...

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Номер записи: 92
03-10-2013 дата публикации

TUNABLE NOTCH FILTER USING FEEDBACK THROUGH AN EXISTING FEEDBACK RECEIVER

Номер: US20130259102A1
Автор: Choksi Ojas M., Gudem Prasad Srinivasa Siva, Zhuo Wei
Принадлежит: QUALCOMM INCORPORATED

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 ...

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Номер записи: 93
03-10-2013 дата публикации

Switching circuit

Номер: US20130260698A1
Автор: Chun-Wen Paul Huang, John Jackson Nisbet, Michael Joseph McPartlin
Принадлежит: Sige Semiconductors Inc

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.

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Номер записи: 94
10-10-2013 дата публикации

Transmitting And Receiving Digital And Analog Signals Across An Isolator

Номер: US20130264961A1
Автор: Chang Kwee Chong, Lum Richard Kok Keong, Ng Gek Yong
Принадлежит:

Various embodiments of systems for transmitting and receiving digital and Various embodiments of systems for transmitting and receiving digital and/or analog signals across a single isolator, solid state lighting systems, or DC/DC converter feedback regulation control systems are disclosed. In one embodiment, the digital and analog signals may be modulated into a frequency modulated signal, and each pulse of the frequency modulated signal may be further encoded into a major pulse and a minor pulse. At least some of the circuits, systems and methods disclosed herein may be implemented using conventional CMOS design and manufacturing techniques and processes to provide, for example, a single integrated circuit or ASIC. 1. An isolation system , comprising:a modulator, wherein the modulator is configured to modulate at least one analog signal corresponding to logic state of at least one digital signal to form a frequency-modulated signal;a transmitter electrically coupled to the modulator;a signal isolator electrically coupled to the transmitter, wherein the transmitter is configured to transmit the frequency-modulated signal across the signal isolator;a receiver electrically coupled to the signal isolator configured to detect and reproduce the frequency-modulated signal into a reproduced frequency-modulated signal;a frequency discriminator electrically coupled to the receiver configured to decode the reproduced frequency-modulated signal and configured to reconstruct the at least one digital signal; anda filtering circuit electrically coupled to the receiver configured to filter the reproduced frequency-modulated signal and to reconstruct the at least one analog signal,wherein the signal isolator is configured to electrically isolate the transmitter and the receiver.2. The system of claim 1 , wherein the modulator further comprises a wave generator circuit configured to generate a wave signal.3. The system of claim 2 , wherein the modulator further comprises a ...

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Номер записи: 95
10-10-2013 дата публикации

Rf and high-speed data cable

Номер: US20130265117A1
Автор: Alireza Mahanfar, Kim Schulze, Stanley Yu Tao Ng
Принадлежит: Individual

A cable is disclosed for transmitting high speed digital baseband signals together with analog RF signals between first and second components. The RF signals may be transmitted between an antenna in the first component and an RF transceiver in the second component at operating frequencies such as for example 70 MHz to 6 GHz. In order to reduce cross-talk between the digital and analog lines, the analog signal may be carried over a line including a pair of wires such as a differential signal pair. The pair of wires carrying the analog signal may include baluns at either end to enable delivery over the pair of wires. The baluns may be wideband baluns to support communication over the full range of operating frequencies. In order to further reduce cross-talk, the digital and/or analog lines may be encased within an EMI-absorbing jacket made of extruded ferrite as one example.

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Номер записи: 96
10-10-2013 дата публикации

Antenna and RF Front-end Arrangement

Номер: US20130265912A1
Автор: Ellae Juha, Ikonen Pekka
Принадлежит: EPCOS AG

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 ...

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Номер записи: 97
10-10-2013 дата публикации

TRANSCEIVER HAVING AN ON-CHIP CO-TRANSFORMER

Номер: US20130267185A1
Автор: Chen Yu-Hsin, Huang Kai-Yi
Принадлежит: Realtek Semiconductor Corp.

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 ...

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Номер записи: 98
17-10-2013 дата публикации

HIGH-FREQUENCY MODULE

Номер: US20130272176A1
Автор: UEJIMA Takanori
Принадлежит:

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 ...

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Номер записи: 99
17-10-2013 дата публикации

LOW POWER DATA RECOVERY USING OVER-CLOCKING

Номер: US20130272368A1
Автор: Yang Wei-Lien
Принадлежит:

Described herein are apparatus, system, and method for low power data recovery using over-clocking. The apparatus is a receiver that comprises an edge detector to detect a first falling edge and a first rising edge of an input signal received from a transmitter; a counter to count in a first direction in response to detecting the first falling edge, and to count in a second direction in response to detecting the first rising edge of the input signal, the counter to generate a final count value based on the counts in the first and second directions; and a decision unit to determine whether data in the input signal is of logical high or logical low value, the determination made according to the final count value, wherein the receiver and the transmitter are a Mobile Industry Processor Interface (MIPI®) M-PHY receiver and transmitter. 1. A receiver comprising:an edge detector to detect a first falling edge and a first rising edge of an input signal received from a transmitter;a counter to count in a first direction in response to detecting the first falling edge, and to count in a second direction in response to detecting the first rising edge of the input signal, the counter to generate a final count value based on the counts in the first and second directions; anda decision unit to determine whether data in the input signal is of logical high or logical low value, the determination made according to the final count value.2. The receiver of further comprises:an over-sampler, coupled to the counter, to generate an over-sampled clock signal for the counter.3. The receiver of claim 2 , wherein the over-sampler is operable to generate the over-sampled clock signal by generating pulse signals at the rising and falling edges of an input clock signal.4. The receiver of further comprises a flip-flop or a latch to latch an output of the decision unit by one of the rising or falling edges of the input clock signal.5. The receiver of claim 1 , wherein the input signal is a pulse ...

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Номер записи: 100