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

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Применить Всего найдено 43. Отображено 43.
08-11-2016 дата публикации

BROADBAND CIRCULAR POLARIZED ANTENNA USING C-SHAPED SLOT

Номер: KR101674139B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a broadband circular polarized antenna using a C-shaped slot. The broadband circular polarized antenna comprises: a dielectric substrate; a ground surface formed on a top surface of the dielectric substrate; a C-shaped slot formed on the ground surface; a micro-strip line formed on a bottom surface of the dielectric substrate to perform a function of a feeding line; and a dielectric resonator formed on the ground surface to cover the slot, having a pillar structure having a bottom surface of a spidron fractal shape. As such, the broadband circular polarized antenna may have a broadband circular property using a simple feeding scheme. COPYRIGHT KIPO 2016 ...

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Номер записи: 1
21-11-2013 дата публикации

METHOD FOR PREPARING THERMAL NEUTRON SHIELDING AND ABSORBING MATERIAL

Номер: WO2013172503A1
Автор: PARK, Jae Soon, HWANG, Keum Cheol, RHEE, Won Hyuk
Принадлежит:

The present invention relates to a method for preparing a material used in a container for conveying, temporarily storing, or permanently storing spent nuclear fuels which are produced from a nuclear research reactor or a nuclear power reactor. In particular, the present invention provides a method for preparing a thermal neutron shielding and absorbing material that has excellent thermal neutron shielding and absorbing capability and also has improved mechanical properties, machinability, weldability, and the like, wherein the method comprises the steps of: crushing and sorting a boron compound and an aluminum alloy; ball milling and mixing boron compound powders and aluminum alloy powders; compacting the mixed powders; and vacuum sintering the compacted body, wherein the method further comprises the hot isostatic pressing of the sintered body.

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Номер записи: 2
08-11-2016 дата публикации

CIRCULARLY POLARIZED SPIDRON ANTENNA

Номер: KR101674143B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a circularly polarized spidron antenna and more specifically, to a dual detection circularly polarized spidron antenna comprising: a dielectric substrate; a ground plane formed on the top surface of the dielectric substrate; a main slot formed on the ground plane and having a spidron fractal shape formed by cutting an upper corner of a first right-angled triangle; an L-shaped slit formed at a side corresponding to the height of the first right-angled triangle of the main slot outward; a coplanar waveguide (CPW) feeding line formed on the same plane as the ground plane and having an end thereof within the main slot; and a microstrip feeding line formed below the bottom plane of the dielectric substrate, and capable of simultaneously inducing right-hand circular polarization and left-hand circular polarization characteristics in the same frequency band. COPYRIGHT KIPO 2016 ...

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Номер записи: 3
07-01-2019 дата публикации

가압 함침용 강화재 예비성형체의 부유 방지 방법 및 부유 방지용 몰드

Номер: KR0101935386B1
Автор: 김대하, 이원혁, 황금철
Принадлежит: 주식회사 대화알로이테크

... 본 발명은 가압 함침용 강화재 예비성형체의 부유 방지 방법 및 부유 방지용 몰드에 관한 것으로, 보다 구체적으로, 원재료를 일정한 형태로 수용할 수 있는 상면이 개방된 가압 함침용 하우징의 내벽에 지르코니아 코팅층을 형성하는 단계; 상기 하우징의 상부에 상부 세라믹 플레이트를 배치하고, 상기 상부 세라믹 플레이트와 연결되고 상기 지르코니아 코팅층의 내측벽에 삽입 형성하되 상기 지르코니아 코팅층의 저면부와 일정 간격 이격되게 강화재 예비성형체 부유방지용 세라믹 플레이트를 형성하는 단계; 상기 지르코니아 코팅층의 저면부와 강화재 예비성형체 부유방지용 세라믹 플레이트 사이의 이격된 공간에 저밀도의 예비성형체를 장입하고, 상기 장입된 예비성형체 위에 고밀도의 기지재를 장입하는 단계; 및 상기 하우징 내부를 가압하여 상기 예비성형체 내부에 기지재가 함침된 혼합물을 형성하는 단계를 포함한다. 본 발명에 따르면, 예비성형체의 부유를 방지하여 예비성형체의 상부영역이 미함침되는 문제점을 해결할 수 있고, 예비성형체의 부유로 인한 함침재 크랙 발생을 방지할 수 있는 효과를 가진다. 또한, 함침재의 하부 영역에 존재하는 기지재의 두께의 불균일을 해소하여 추후 기계적 가공이 용이한 장점이 있다.

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Номер записи: 4
01-10-2018 дата публикации

WIRELESS POWER TRANSMISSION APPARATUS AND METHOD USING INDIVIDUAL SIGNAL GENERATOR

Номер: KR1020180107012A
Автор: YANG YOUN GOO, LEE KANG YOON, HWANG KEUM CHEOL, BAE JONG SUK
Принадлежит:

The wireless power transmission apparatus according to the present invention can make a transmission signal (RF) and a reception signal (LO) signal directly by using each high-frequency signal generator in each transmission cell instead of a power distributer in a transmission array structure, unlike the conventional retro-directive beam forming method. Accordingly, the wireless power transmission apparatus according to the present invention supplies the same reference signal to each high-frequency signal generator from a digital control part instead of a multi-power distributor operating at a high frequency. So, the complexity of hardware increases relatively even though the number of cells increases. COPYRIGHT KIPO 2018 (AA) Transmission part (BB) High-frequency signal generator (CC) Variable phase shifter (DD) Attenuator (EE) Power amplifier (FF) Antenna (GG) Receiving part (HH) Downward converter (II) Band filter (JJ) Low noise amplifier (KK) A/D converter (LL) Reference signal (MM) ...

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Номер записи: 5
21-01-2016 дата публикации

CERMET AND METHOD FOR PREPARING SAME

Номер: WO2016010226A1
Автор: SONG, Myong Hun, HONG, Soon Hyung, RHEE, Won Hyuk, RYU, Ho Jin, SHIN, Young Min, LEE, Jun Ho, HWANG, Keum Cheol
Принадлежит:

The present invention relates to a cermet and a method for preparing the same. A cermet according to an embodiment of the present invention may comprise: a carbon-based material; a titanium-based material; and an alloy matrix containing at least one selected from the group consisting of Fe, Ni, Mo, Cr, Si, Mn, and Cu.

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Номер записи: 6
09-11-2016 дата публикации

COMPACT BROADBAND MONOPOLE ANTENNA AND MANUFACTURING METHOD THEREOF

Номер: KR101674138B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

According to an embodiment of the present invention, a compact broadband monopole antenna comprises: a dielectric substrate; and an antenna body formed in the dielectric substrate, and having a transmission line formed by etching a zigzag first pattern from left to right based on a vertical center part of the dielectric substrate. By forming the transmission line having a symmetric structure in the antenna body, the compact broadband monopole antenna can improve operation properties of the antenna while miniaturizing a size of the antenna by reducing a resonance frequency. COPYRIGHT KIPO 2016 ...

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Номер записи: 7
08-11-2016 дата публикации

CIRCULARLY POLARIZED ANTENNA OF ASYMMETRICAL SEMICIRCULAR SHAPE AND MANUFACTURING METHOD THEREOF

Номер: KR101674141B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

According to one embodiment of the present invention, a circularly polarized antenna of an asymmetrical semicircular shape comprises: a dielectric resonator formed in a semicircular shape by obliquely cutting an internally hollow oval cylinder; and a power supply coaxial line configured to supply power to the dielectric resonator. COPYRIGHT KIPO 2016 ...

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Номер записи: 8
12-01-2012 дата публикации

ANTENNA FOR WIRELESS USB DONGLE DEVICE AND WIRELESS USB DONGLE DEVICE USING SAME

Номер: KR2012005437A1
Автор: HWANG, Keum Cheol
Принадлежит:

The present invention relates to an antenna for a wireless USB dongle device, and includes: a dielectric substrate; a first copy patch which is provided on one surface of the dielectric substrate and resonates in a first frequency band; a second copy patch which is near the first copy patch and resonates in a second frequency band, which is different from the first frequency band; a third copy patch which is connected to a middle portion of the first copy patch and resonates in a third frequency band, which is different from the second frequency band; and a ground plane to which the end terminal of the first copy patch is connected. Accordingly, the first to three copy patches allow resonance to occur in a triple frequency band, so that it is possible to be applied to a wireless USB dongle device which supports a service using a triple frequency band, i.e. using each of the 3.5GHzWiMAX (3.4-3.6 GHz), WiBro (2.3-2.39 GHz), WLAN (2.4-2.483 GHz, 5.15-5.825 GHz), 2.6GHzWiMAX (2.5-2.7 GHz), ...

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Номер записи: 9
26-02-2019 дата публикации

상쇄루프를 이용한 적응형 위상반전 무선 전력 송신 장치 및 방법

Номер: KR0101925923B1
Автор: 양영구, 이휘섭, 황금철, 이강윤
Принадлежит: 성균관대학교 산학협력단

... 본 명세서는 전력수신측의 보조송신부를 통하여 송신된 신호를 전력 송신부의 각 송신셀들의 보조 수신부를 통하여 수신한 후 신호의 하향변조 없이 개별 상쇄루프와 간단한 디지털 제어부를 통해 반전 위상을 얻어낼 수 있는 무선 전력 송신 장치 및 방법을 개시한다. 본 명세서에 따른 무선 전력 송신 장치는, 다수의 가변위상천이기와 각각 연결된 다수의 안테나; 상기 다수의 안테나에 각각 연결된 다수의 보조 수신부; 상기 다수의 보조 수신부에 각각 연결된 다수의 상쇄루프부; 상기 다수의 상쇄루프부에 각각 연결된 다수의 디지털 제어부; 및 상기 다수의 안테나 중 어느 하나의 안테나에 연결된 기준 수신부;를 포함하는 무선 전력 송신 장치로서, 상기 각 보조 수신부 및 상기 기준 수신부는 전력 수신부로부터 수신한 신호를 상기 각 상쇄루프부로 출력하고, 상기 각 상쇄루프부는, 상기 각 보조 수신부 및 상기 기준 수신부로부터 수신한 신호의 전력 차이 신호를 출력하고, 상기 각 디지털 제어부는, 상기 각 전력 차이 신호를 수신하여 상기 전력 차이 신호가 최소가 되도록 상기 각 가변위상천이기를 제어하는 신호를 출력할 수 있다.

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Номер записи: 10
04-04-2024 дата публикации

조리 기기 및 이의 제어 방법

Номер: KR102654131B1
Автор: 이길영, 권진석, 박종호, 조진희, 황금철
Принадлежит: 삼성전자주식회사

... 조리 기기가 개시된다. 개시된 조리 기기는, 복수의 가열 코일, 복수의 가열 코일 각각에 대한 출력 레벨을 입력받는 입력 장치, 복수의 가열 코일 각각에 구동 전원을 개별적으로 제공하는 복수의 인버터 및 입력된 출력 레벨에 기초하여 복수의 인버터를 제어하는 프로세서를 포함하고, 프로세서는, 입력된 출력 레벨에 기초하여 복수의 가열 코일 각각의 소비 전력을 예측하고, 예측된 소비 전력의 합이 기설정된 전력값보다 크면, 예측된 가열 코일 별 소비 전력과 복수의 가열 코일의 전원 조정에 대한 이력 정보에 기초하여 대상 가열 코일을 결정하고, 대상 가열 코일이 현재의 출력 레벨보다 작은 출력 레벨로 동작하도록 대상 가열 코일에 대응되는 인버터를 제어한다.

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Номер записи: 11
04-04-2023 дата публикации

액체 연료의 연소 효율을 향상시키기 위한 연료첨가제 및 그 제조방법

Номер: KR102517046B1
Автор: 조장호, 황금철, 서주원
Принадлежит: 서주원, 주식회사 코나솔

... 송진분말 12~20wt%, 아스파라긴산 1~1.5wt%, 크실렌 12~20wt%, 벤젠 10~13.5wt% 및 이소프로필알코올 50~63.5wt%을 혼합하여 발효시킨 원료액과 등유, 경유, 휘발유에서 선택된 하나의 용매가 1 : 150~300의 중량비로 혼합되어 조성되는 것을 특징으로 하는 액체 연료의 연소 효율을 향상시키기 위한 연료첨가제를 제시하며, 또한 상기 연료첨가제를 제조하기 위한 방법으로서, 송진분말, 아스파라긴산, 크실렌, 벤젠, 이소프로필알코올을 준비하는 원재료 준비단계와; 용기에 상기 송진분말 12~20wt%, 아스파라긴산 1~1.5wt%, 크실렌 12~20wt%, 벤젠 10~13.5wt%, 이소프로필알코올 50~63.5wt%의 비율로 혼합된 원재료 혼합물을 투입하고 15~60℃의 온도를 유지하도록 가열 및 교반하면서 1차 발효시키는 1차 발효단계와; 상기 1차 발효단계를 거쳐 얻어진 1차 발효액 중 상등액만을 취하여 유리병에 담아 암실에서 24~60시간 동안 정치(定置)시키면서 발효시키는 2차 발효단계와; 상기 2차발효단계를 거쳐 얻어진 2차 발효액과 등유, 경유, 휘발유 중에서 선택된 어느 하나의 용매를 1 : 150~300의 중량비로 혼합하는 발효액-용매 혼합단계와; 상기 발효액-용매 혼합단계를 거친 혼합액을 용기에 넣고 상온에서 교반하면서 30~60시간 동안 숙성시키는 숙성단계를 포함하는 연료첨가제의 제조방법을 제공한다.

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Номер записи: 12
03-06-2016 дата публикации

DUAL-BAND CIRCULAR POLARIZED DIPOLE ANTENNA

Номер: KR101627282B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a dual-band circular polarized dipole antenna, and more specifically, to a dual-band circular polarized dipole antenna applicable to a satellite communication system. The antenna comprises: a dielectric substrate; a first dipole unit including two first patches symmetrically disposed on upper and lower surfaces of the dielectric substrate; and a second dipole unit including two second patches symmetrically disposed on the upper and lower surfaces of the dielectric substrate and formed to cross the first dipole unit, wherein the first and second patches include a first right triangular patch having a cut upper edge and in a spidron fractal shape and a meander line connected to the patch. COPYRIGHT KIPO 2016 ...

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Номер записи: 13
02-01-2023 дата публикации

골프공의 균형성 분석 장치

Номер: KR20230000210A
Автор: 황금철
Принадлежит:

... 본 발명의 일 실시예는 측정 대상 골프공의 복수의 측정면에 전자파를 송신하고, 상기 복수의 측정면으로부터 반사 및 투과된 전자파를 수신하는 측정부; 및 상기 수신된 전자파에 기초하여 골프공의 균형성을 분석하는 분석부를 포함하는 것을 특징으로 한다.

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Номер записи: 14
02-11-2018 дата публикации

CIRCULAR POLARIZATION ANTENNA DEVICE WITH RETRODIRECTIVE ARRAY USING EBG STRUCTURE AND WIRELESS POWER TRANSMISSION SYSTEM INCLUDING SAME

Номер: KR101914526B1
Автор: HWANG KEUM CHEOL, PARK WON BIN, YANG YOUNGOO, LEE KANG YOON, LEE SUNG WOO, LEE JONG MIN, SONG CHAN MI, YUN JU HO, LIM HONG JUN, KWON OH HEON
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a circular polarization antenna device with a retrodirective array using an EBG structure, and a wireless power transmission system including the same. The antenna device of the present invention includes at least one patch antenna element and patches of different electromagnetic band gap (EBG) structures. The patch antenna elements are provided in the form of a Koch fractal on the left and right sides of a rectangular shape, and have a plurality of patches on the upper and lower sides and the left and right sides, respectively. The antenna device is applied to a wireless power transmitter for transmitting wireless power. According to the present invention, it is possible to miniaturize the antenna device, reduce mutual coupling between adjacent patch antenna elements, and improve circular polarization characteristic. COPYRIGHT KIPO 2018 ...

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Номер записи: 15
20-11-2018 дата публикации

조리기 및 그 입력 제어방법

Номер: KR0101920430B1
Автор: 황금철
Принадлежит: 삼성전자주식회사

... 다이얼을 사용하는 조리기에서 다이얼 하나만으로 간편하게 자동 또는 수동 조리를 입력할 수 있는 조리기 및 그 입력 제어방법을 제안한다. 하나의 다이얼을 사용하여 자동 또는 수동의 조리모드를 선택하고, 선택한 조리모드의 세부 조리 기능까지 설정할 수 있어 입력에 필요한 디바이스 장치를 줄일 수 있고, 조리기가 익숙하지 않은 사용자와 조리기가 익숙한 사용자 모두에게 조작성을 향상시킬 수 있다.

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Номер записи: 16
08-11-2016 дата публикации

BROADBAND CIRCULARLY POLARIZED ANTENNA

Номер: KR101674137B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a broadband circularly polarized antenna. More specifically, the present invention includes: a dielectric substrate; a ground surface formed on the upper surface of the dielectric substrate; a spidron fractal-shaped slot formed on the ground surface; a micro-strip line formed on the lower surface of the dielectric substrate, and functioning as a feeder; and a cylindrical dielectric resonator formed on the ground surface to cover the slot, and including a groove part formed on the surface. Therefore, the present invention is capable of forming broadband circularly polarized characteristics by using a simple feeding method. COPYRIGHT KIPO 2016 ...

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Номер записи: 17
12-05-2011 дата публикации

BROADBAND POLARIZATION TWISTER AND POLARIZATION TWISTING DUAL-REFLECTOR ANTENNA USING SAME

Номер: KR2011056047A2
Автор: HWANG, Keum Cheol
Принадлежит:

Disclosed is a broadband polarization twisting technique. According to one embodiment of the present invention, the broadband polarization twister comprises a conducting plate that performs a polarization twisting process, wherein meander grooves are formed on a reflecting surface of the conducting plate. Thus, the invention improves broadband polarization twisting performance, and minimizes polarization twisting loss.

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Номер записи: 18
11-01-2019 дата публикации

다중 빔 배열 안테나 장치

Номер: KR0101937820B1
Автор: 최태관, 황금철, 이종민, 임홍준
Принадлежит: 에스케이텔레콤 주식회사

... 본 발명은 아날로그 빔포밍을 위한 다중 빔 배열 안테나 장치에 관한 것으로서, 상기 장치는, 무선 신호를 복수의 출력 포트 중 어느 하나로 선택 출력하는 빔 스위칭부와, 복수의 지향성 커플러와, 복수의 교차 선로 및 위상 지연 선로로 이루어져, 상기 빔 스위칭부의 복수의 출력 포트에 각각 연결된 복수의 입력 포트로 입력된 무선 신호로부터 서로 다른 위상의 복수의 무선 신호를 생성하는 버틀러 매트릭스 급전부와, 상기 버틀러 매트릭스 급전부의 출력 포트에 각각 연결되는 복수의 선형 배열 안테나 소자로 이루어져, 상기 버틀러 매트릭스 급전부로부터 서로 다른 위상의 무선 신호를 입력받아 소정 방향의 빔을 생성하는 안테나 어레이부를 포함하고, 상기 버틀러 매트릭스 급전부는, 복수의 입력 포트 간의 격리도를 향상시키도록 접지면에 하나 이상의 H 슬롯이 형성하고, 방위각(Azimuth) 평면에서의 부엽준위를 감소시키기 위한 하나 이상의 감쇄기를 상기 버틀러 매트릭스 급전부의 출력측에 구비하며, 상기 버틀러 매트릭스 급전부로부터 수직방향으로 소정 거리 이격되며, 상기 버틀러 매트릭스 급전부와 평행하게 형성되어, 버틀러 매트릭스 급전부의 복사 전계를 차폐시키는 쉴드부를 형성할 수 있다.

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Номер записи: 19
23-10-2018 дата публикации

BROADBAND DOHERTY POWER AMPLIFIER USING RESONANT CIRCUIT FOR OUTPUT MATCHING CIRCUIT OF PICKING AMPLIFIER

Номер: KR101910896B1
Автор: YANG, YOUN GOO, KANG, HYUN UK, LEE, KANG YOON, HWANG, KEUM CHEOL
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention proposes a design method for implementing a broadband Doherty power amplifier using a resonant circuit for the output matching circuit of a peaking amplifier. An l/4 impedance converter and a resonant circuit were designed by considering the package component of a transistor. The bandwidth of a Doherty power amplifier was expanded by using it. For the conventional broadband Doherty power amplifier, an l/2 transmission line is used in the output matching circuit of the peaking amplifier is used. On the other hand, a circuit size can be greatly reduced because a resonance circuit is included in the present invention. In addition, since a broadband output matching circuit is formed at a node where a carrier amplifier is combined with a peaking amplifier, the broadband output matching circuit can be easily configured as a matching circuit. COPYRIGHT KIPO 2018 (AA) Transistor (BB) Broadband output matching ...

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Номер записи: 20
21-08-2018 дата публикации

ANTENNA DEVICE

Номер: KR101890363B1
Автор: PARK, YOUNG MI, KWON, OH HEON, HWANG, KEUM CHEOL, PARK, WON BIN, YUN, JU HO, LIM, HONG JUN, SONG, CHAN MI, LEE, SUNG WOO, LEE, JONG MIN
Принадлежит: AGENCY FOR DEFENSE DEVELOPMENT

The present invention provides an antenna device which comprises: an H-planar type horn antenna having a substrate integrated waveguide structure; and a transition part having a structure capable of being connected to the H-planar type horn antenna, and having a structure capable of transmitting an electromagnetic wave, transmitted from a double ridge waveguide, to the H-planar type horn antenna. The antenna device improves impedance matching between the H-planar type horn antenna and a free space by using a patch of a lattice structure, thereby implementing an antenna function of a wideband. COPYRIGHT KIPO 2018 ...

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Номер записи: 21
08-11-2016 дата публикации

BROADBAND CIRCULAR POLARIZATION ANTENNA USING EMBEDDED STRUCTURE

Номер: KR101674140B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a broadband circular polarization antenna using an embedded structure, and more particularly to a broadband circular polarization antenna which can release broadband circular polarization characteristic using a simple power feeding method. The broadband circular polarization antenna includes a dielectric substrate, a ground plane formed on the upper surface of the dielectric substrate, a slot having a spidron fractal shape formed on the ground plane, a microstrip line which is formed on the lower surface of the dielectric substrate and performs a function as a feeder line, and a patch of a spidron fractal shape located in the slot. So, a wideband circular polarization antenna can be realized without using a multilayer substrate or a complex power feeding structure. COPYRIGHT KIPO 2016 ...

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Номер записи: 22
09-01-2018 дата публикации

에너지 하비스팅을 이용한 전이중 중계 통신 방법 및 에너지 하비스팅에 기반한 전이중 중계 통신 시스템

Номер: KR0101816613B1
Автор: 김동인, 황금철, 문종호, 박종진
Принадлежит: 성균관대학교산학협력단

... 에너지 하비스팅을 이용한 전이중 중계 통신 방법은 중계 노드가 소스 노드로부터 전송되는 제1 정보 신호 및 목적 노드로부터 전송되는 제2 정보 신호를 수신하는 단계, 상기 중계 노드가 상기 제1 정보 신호 및 상기 제2 정보 신호를 양방향으로 중계 전송하면서 동시에 상기 소스 노드로부터 전송되는 에너지 신호를 이용하여 에너지를 수집하는 단계, 상기 소스 노드가 상기 중계 노드가 전송한 정보 신호를 수신하는 단계 및 상기 목적 노드가 상기 중계 노드가 중계한 정보 신호를 수신하는 단계를 포함한다. 상기 소스 노드, 상기 중계 노드 및 상기 목적 노드는 전이중 방식으로 통신을 수행하는 장치이다.

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Номер записи: 23
08-11-2016 дата публикации

SUPER-WIDEBAND PLANAR SLOT ANTENNA

Номер: KR101674142B1
Автор: HWANG, KEUM CHEOL, KWON, GI NA, SONG, CHAN MI, YUN, JONG HEON, YUN, JO HO, LEE, JONG MIN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a super-wideband planar slot antenna and more specifically, to a super-wideband planar slot antenna comprising: a dielectric substrate; a ground plane formed in a partial area on the dielectric substrate; an outer strip located on the same plane with the ground plane, curved and extended from one end unit of the ground plane to include a first inner slot and formed to separate an end thereof from the other end unit of the ground plane; and the inner strip located on the same plane as the ground plane, curved and extended from the other end unit of the ground plane to include a second inner slot and formed to separate an end thereof from the ground plane, and capable of inducing ultra-wideband impedance matching characteristics of at least 41:1. COPYRIGHT KIPO 2016 ...

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Номер записи: 24
04-01-2018 дата публикации

SYSTEM FOR COMBINING ENERGY HARVESTING AND WIRELESS POWER RECEIVING

Номер: KR101814556B1
Автор: LEE, KANG YOON, YANG, YOUN GOO, KIM, MIN CHAN, HWANG, KEUM CHEOL, KIM, SANG YUN, CHO, SUNG HUN, OH, SEONG JIN, PARK, YOUNG JUN, JANG, BYEONG GI, RYU, HO CHEOL, KIM, WOO SEOB, PARK, JU HYUN
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a system for combining energy harvesting and wireless power receiving. The system comprises: an energy harvesting module for collecting and storing energy from at least one energy resource; a wireless power receiving module for wirelessly receiving power from the outside; a power control block for sensing power of the energy harvesting module and the wireless power receiving module, controlling power according to the sensed power, and selecting a transmission power mode; and a voltage regulator for transmitting power selected from the power control block to store the selected power in an energy storage apparatus. COPYRIGHT KIPO 2018 (10) Fusion system (110) Universal energy sensing block (130) Energy harvesting rectifier (150) Energy storage block (210) Matching network (230) Rectifier for receiving wireless power (310) Power sensing part (330) Power switching part (350) Mode selection part (400) Voltage regulator (AA) Heat (BB) Piezoelectric (CC) Wireless ...

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Номер записи: 25
28-11-2018 дата публикации

METHOD TO PREVENT REINFORCEMENT PREFORM FOR PRESSURE-IMPREGNATION FROM FLOATING AND FLOATING PREVENTION MOLD THEREOF

Номер: KR1020180126830A
Автор: KIM, DAE HA, RHEE, WON HYUK, HWANG, KEUM CHEOL
Принадлежит:

The present invention relates to a method to prevent a reinforcement preform for pressure-impregnation from floating and a floating prevention mold thereof. More specifically, according to the present invention, the method to prevent a reinforcement preform for pressure-impregnation from floating comprises: a step of forming a zirconia coating layer on the inner wall of a pressure-impregnation housing with an opened upper surface, which stores a raw material in a predetermined shape; a step of disposing an upper ceramic plate on the upper part of the housing, and forming a ceramic plate for preventing the reinforcement preform from floating by being spaced apart from the bottom part of the zirconia coating layer at a predetermined interval while being inserted into the inner wall of the zirconia coating layer; a step of filling a low density preform in a separated space between the bottom part of the zirconia coating layer and the ceramic plate for preventing the reinforcement preform from ...

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Номер записи: 26
01-11-2017 дата публикации

FULL-DUPLEX RELAY COMMUNICATION METHOD USING ENERGY HARVESTING AND FULL-DUPLEX RELAY COMMUNICATION SYSTEM BASED ON ENERGY HARVESTING

Номер: KR1020170120811A
Автор: KIM, DONG IN, HWANG, KEUM CHEOL, MOON, JONG HO, PARK, JONG JIN
Принадлежит:

The present invention relates to a full-duplex relay communication method using energy harvesting which comprises the following steps: a relay node receives a first information signal transmitted from a source node and a second information signal transmitted from a destination node; the relay node relays and transmits the first and second information signals in both directions, and collects energy by using an energy signal transmitted from the source node at the same time; the source node receives an information signal transmitted by the relay node; and the destination node receives the information signal relayed by the relay node. The source node, the relay node, and the destination node perform communication through a full-duplex method. COPYRIGHT KIPO 2017 (301) Transmit a first information signal (302) Transmit a second information signal (311,312) Relay the first and second information (313) Transmit an energy signal (321) Receive a magnetic interference signal among a relay signal ...

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Номер записи: 27
12-05-2011 дата публикации

BROADBAND POLARIZATION TWISTER AND POLARIZATION TWISTING DUAL-REFLECTOR ANTENNA USING SAME

Номер: WO2011056047A3
Автор: HWANG, Keum Cheol
Принадлежит:

Disclosed is a broadband polarization twisting technique. According to one embodiment of the present invention, the broadband polarization twister comprises a conducting plate that performs a polarization twisting process, wherein meander grooves are formed on a reflecting surface of the conducting plate. Thus, the invention improves broadband polarization twisting performance, and minimizes polarization twisting loss.

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Номер записи: 28
05-02-2018 дата публикации

BROADBAND CIRCULARLY POLARIZED ANTENNA

Номер: KR1020180012157A
Автор: HWANG, KEUM CHEOL, KWON, OH HEON, PARK, WON BIN, SONG, CHAN MI, YANG, YOUN GOO, YUN, JU HO, LEE, KANG YOON, LEE, SUNG WOO, LEE, JONG MIN, LIM, HONG JUN
Принадлежит:

A broadband circularly polarized antenna may include a dielectric substrate; a feed line provided on the lower surface of the dielectric substrate; a ground surface provided on the upper surface of the dielectric substrate; and a dielectric resonator provided on the dielectric substrate having a lattice structure using a real coating genetic algorithm. According to the broadband circularly polarized antenna, broadband circular polarization characteristics can be realized while maintaining characteristics such as high efficiency and miniaturization due to the absence of surface current and conductor loss which are advantages of DRA. In addition, it is possible to secure broadband circular polarization characteristics by using a simple power feeding method. In addition, it can be used in various wireless communication bands as a broadband circularly polarized antenna. COPYRIGHT KIPO 2018 ...

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Номер записи: 29
30-08-2018 дата публикации

ANTENNA DEVICE

Номер: KR101893555B1
Автор: PARK, YOUNG MI, HWANG, KEUM CHEOL, PARK, WON BIN, KWON, OH HEON, YUN, JU HO, LIM, HONG JUN, SONG, CHAN MI, LEE, SUNG WOO, LEE, JONG MIN
Принадлежит: AGENCY FOR DEFENSE DEVELOPMENT

The present invention provides an antenna manufacturing technique capable of minimizing a size while improving a gain. An antenna device comprises a first conductor; a second conductor tapered and extending from the center of the first conductor; and a magnetic body formed to be in contact with the first conductor while surrounding the second conductor. COPYRIGHT KIPO 2018 ...

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Номер записи: 30
19-03-2018 дата публикации

COOKING APPLIANCE AND CONTROL METHOD THEREOF

Номер: KR1020180028643A
Автор: CHO, JIN HEE, JO, GA YOUNG, HWANG, KUM CHUL
Принадлежит:

A cooking appliance comprises: a cooking chamber; a steam generator for generating steam and supplying the generated steam to the cooking chamber; a level sensor for sensing a level of a cleaning liquid stored in the steam generator; a water supply device including a storage unit accommodating the cleaning liquid, a water supply pump supplying the cleaning liquid accommodated in the storage unit to the steam generator, and a drain pump supplying the cleaning liquid remaining in the steam generator to the storage unit; and a control unit for controlling operation of the water supply pump and the drain pump, wherein the control unit operates the water supply pump in a cleaning mode and operates the drain pump when the cleaning liquid is full in the steam generator. When the cleaning liquid is discharged from the steam generator, the water supply pump can be operated again. COPYRIGHT KIPO 2018 ...

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Номер записи: 31
05-04-2023 дата публикации

골프공 선별 장치

Номер: KR20230045878A
Автор: 황금철
Принадлежит:

... 본 발명은 골프공 선별 장치에 관한 것으로서, 본 발명에 따른 골프공 선별 장치는 골프공을 지지하고 상기 골프공을 회전시켜 자세를 변경시키는 회전지지부, 상기 골프공의 일측에 배치되어 상기 골프공을 향하여 신호를 송신하는 송신 안테나, 상기 골프공의 타측에 배치되어 상기 송신 안테나로부터 송신된 신호를 수신하는 수신 안테나 및 상기 골프공을 회전시키며 상기 수신 안테나에서 수신된 신호를 분석하여 상기 골프공을 선별하는 선별부를 포함하는 것을 특징으로 한다.

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Номер записи: 32
05-02-2018 дата публикации

CIRCULARLY POLARIZED ANTENNA

Номер: KR1020180012159A
Автор: HWANG, KEUM CHEOL, KWON, OH HEON, PARK, WON BIN, SONG, CHAN MI, YANG, YOUN GOO, YUN, JU HO, LEE, KANG YOON, LEE, SUNG WOO, LEE, JONG MIN, LIM, HONG JUN
Принадлежит:

The present invention relates to a circularly polarized antenna. The circularly polarized antenna includes: a dielectric substrate; a conductive plate formed on the upper surface of the dielectric substrate and formed in the shape of two C-shaped structures overlapping each other; a ground plane provided on the lower surface of the dielectric substrate; a feeding line installed on the same plane as the ground plane; a main slot inserted in the ground plane to enclose the feeding line; and a circular slot inserted in the ground plane and formed at a position corresponding to a corner on one side of the conductive plate. According to the present invention, the circularly polarized antenna is strong against communication environments such as radio interference and partial distortion by having a circularly polarized property and can relieve multi-path fading. Also, the circularly polarized antenna can be manufactured on a flexible substrate and can be easily applied to a wearable product. Also ...

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Номер записи: 33
16-05-2024 дата публикации

Magneto-Electric 다이폴 안테나

Номер: KR102665132B1
Автор: 황금철, 박목윤, 류현상, 이종선, 이동환, 정태용, 황동휘, 김준희, 이동근, 박진수
Принадлежит: 성균관대학교산학협력단

... 본 발명은, 그라운드 평면, 상기 그라운드 평면 상에 제1 방향으로 서로 이격 배치된 제1, 2 수직 패치, 상기 제1 방향과 교차하는 제2 방향으로 상기 제1, 2 수직 패치 각각에 접촉된 제1, 2 수평 패치, 상기 제1, 2 수직 패치 및 상기 제1, 2 수평 패치를 여기시키는 직접 피드 및 상기 그라운드 평면 상에 상기 제1, 2 수평 패치 각각과 서로 이격 배치된 제1, 2 기생 패치를 포함하는 Magneto-Electric 다이폴 안테나를 제공한다.

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Номер записи: 34
15-03-2018 дата публикации

COOKING APPARATUS AND CONTROL METHOD THEREFOR

Номер: WO2018048119A1
Автор: CHO, Jin-Hee, JO, Ga-Young, HWANG, Kum-Chul
Принадлежит:

A cooking apparatus comprises: a cooking chamber; a steam generation device for generating steam and supplying the generated steam to the cooking chamber; a level measurement sensor for sensing the level of a cleaning liquid stored in the steam generation device; a water supply device including a storage unit for accommodating the cleaning liquid, a feed pump for supplying the cleaning liquid accommodated in the storage unit to the steam generation device, and a drain pump for supplying the cleaning liquid remaining in the steam generation device to the storage unit; a control unit for controlling the operation of the feed pump and the drain pump, wherein the control unit can operate the feed pump in a cleaning mode, can operate the drain pump when the cleaning liquid is full in the steam generation device, and can operate the feed pump again when the cleaning liquid is emptied from the steam generation device.

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Номер записи: 35
31-08-2022 дата публикации

근거리장 측정을 위한 도파관

Номер: KR102438369B1
Автор: 황금철, 임홍준, 정태용, 이종선, 이동환, 류현상, 윤정배, 문병주, 박진수, 이동근
Принадлежит: 성균관대학교산학협력단

... 본 발명은 근거리장 측정을 위한 도파관에 관한 것으로, 소정의 길이를 가지며 일단이 개구된 제1 유전체부 및 일단이 상기 제1 유전체부의 일단과 결합되며, 타단에 다수의 직육면체 막대 구조를 가진 유전체 로드가 형성되는 제2 유전체부를 포함한다.

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Номер записи: 36
25-07-2018 дата публикации

DUAL-MODE RF DIFFERENTIAL POWER AMPLIFIER

Номер: KR101881767B1
Автор: YANG, YOUN GOO, LIM, WON SEOB, LEE, KANG YOON, HWANG, KEUM CHEOL
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present specification discloses a differential power amplifier capable of achieving high efficiency in high power and low power modes through simple control. According to the present invention, the differential power amplifier comprises: a first amplifier and a second amplifier receiving two signals with mutually inverted phases through a first transistor and a second transistor; a transformer connected to the first amplifier and the second amplifier to transmit an output signal to a load; a power supply unit; a mode switch connected to the power supply unit; a first inductor connected between the power supply unit and the first amplifier; a second inductor connected between the mode switch and the second amplifier; and a control unit controlling on and off operations of the mode switch. At this time, the control unit controls the mode switch to be turned off in the low output mode, and controls the mode switch to be turned on in the high output mode. COPYRIGHT KIPO 2018 (150) Control ...

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Номер записи: 37
02-02-2018 дата публикации

ACTIVE RECTIFIER FOR PREVENTING REVERSE LEAKAGE CURRENT

Номер: KR101825142B1
Автор: LEE, KANG YOON, OH, SEONG JIN, YANG, YOUN GOO, HWANG, KEUM CHEOL, PARK, YOUNG JUN, KIM, SANG YUN, JANG, BYEONG GI, KIM, JUNG YEON
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to an active rectifier for preventing the reverse leakage current by comparing a signal which is actually applied to a transistor of a rectifier circuit and an alternating input signal. According to the present invention, the active rectifier comprises: a rectifying unit configured to include first and fourth transistors which carry and apply the current of an alternating input (hereinafter ′V_AC′) to a rectifying capacitor in a section where a voltage of the alternating input is negative and second and third transistors which carry and apply the current of the alternating input to the rectifying capacitor in a section where the voltage of the alternating input is positive; a driver configured to output a driving control signal (hereinafter ′V_G1′ ~ V_G4>′) which is applied to the gates of the first to fourth transistors and drives the first to fourth transistors; and a switching device control circuit configured to compare the signal applied to the gate of ...

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Номер записи: 38
28-11-2018 дата публикации

WEAR-RESISTANT CERMET WITH CONTROLLED VOLUME RATIO OF CARBIDE AND MANUFACTURING METHOD THEREOF

Номер: KR1020180126829A
Автор: KIM, DAE HA, RHEE, WON HYUK, HWANG, KEUM CHEOL
Принадлежит:

The present invention relates to a wear-resistant cermet with a controlled volume ratio of carbide, wherein breakage of a preform of a reinforcement material is suppressed and the volume ratio of carbide is controlled by less than 50%, such that mechanical processing is facilitated, and a manufacturing method thereof. More specifically, the wear-resistant cermet with a controlled volume ratio of carbide comprises: a reinforcement material preform including a tool steel powder including one or more selected from a group consisting of STD 11, STD 61, SKH 2, and SKH 9, TiC, and a polymer resin, and applying a carbide form with the volume ratio of less than 50%; and a base material formed with the same metal as that of the tool steel powder, and formed by being pressed and impregnated into the reinforcement material preform. Accordingly, the tool steel powder functions as a binder after sintering during a cermet manufacturing process, thereby providing effects of increasing the strength of ...

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Номер записи: 39
04-03-2025 дата публикации

주파수 선택 표면(FSS) 구조를 갖는 고조파 억제 장치

Номер: KR102775104B1
Автор: 황금철
Принадлежит: 대한민국(방위사업청장)

... 본 발명은 주파수 선택 표면(FSS) 구조를 갖는 고조파 억제 장치에 있어서, 유전체 기판, 상기 유전체 기판의 일면에 적층되고, 주기적으로 제1 단위 패턴이 배열되어 특정 주파수 대역을 통과시키는 대역 통과 필터(band pass filter)의 특성을 갖는 제1 도전체 기판, 및 상기 유전체 기판의 타면에 적층되고, 주기적으로 상기 제1 단위 패턴과 패턴이 서로 상이한 제2 단위 패턴이 배열되어 특정 주파수 대역을 반사시키는 대역 저지 필터(band stop filter)의 특성을 갖는 제2 도전체 기판을 포함하는, 고조파 억제 장치를 제공한다.

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Номер записи: 40
05-11-2015 дата публикации

CERAMIC-POLYMER COMPOSITE PARTICLES, CERAMIC-POLYMER COMPOSITE PARTICLE GRANULAR CLUSTER, AND METHOD FOR PREPARING CERAMIC-POLYMER COMPOSITE PARTICLES BY USING FLUIDIZED BED COATING GRANULATION PROCESS

Номер: WO2015167069A1
Автор: SONG, Myong Hun, PARK, Jin Ju, SHIN, Young Min, RHEE, Won Hyuk, HWANG, Keum Cheol, RHEE, Chang Kyu
Принадлежит:

The present invention relates to ceramic-polymer composite particles, a ceramic-polymer composite particle granular cluster, and a method for preparing ceramic-polymer composite particles by using a fluidized bed coating granulation process, and ceramic-polymer composite particles according to one embodiment of the present invention comprise ceramic particles and a thermoplastic resin.

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Номер записи: 41
24-04-2018 дата публикации

ADAPTIVE PHASE INVERTED WIRELESS POWER TRANSMISSION APPARATUS USING CANCELLATION LOOP, AND METHOD THEREOF

Номер: KR1020180041470A
Автор: YANG, YOUN GOO, LEE, HWI SEOB, HWANG, KEUM CHEOL, LEE, KANG YOON
Принадлежит:

Disclosed are a wireless power transmission apparatus and a method thereof, capable of obtaining an inverted phase through an individual cancellation loop and a simple digital control unit without downward modulation of a signal after receiving a signal transmitted through an auxiliary transmission unit on the power reception side through an auxiliary reception unit of each transmission cell of a power transmission unit. The wireless power transmission apparatus according to the present invention comprises: a plurality of antennas connected to a plurality of variable phase shifters, respectively; a plurality of auxiliary reception units connected to the antennas, respectively; a plurality of offset loop units connected to the auxiliary reception units, respectively; a plurality of digital control units connected to the offset loop units, respectively; and a reference receiving unit connected to any one of the antennas. Each of the auxiliary reception units and the reference receiving unit ...

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Номер записи: 42
08-03-2023 дата публикации

조리 장치 및 그 제어 방법

Номер: KR20230033361A
Автор: 이슬기, 김성민, 황금철
Принадлежит:

... 개시된 발병의 일 측면에 의한, 조리 장치는, 온도 센서; 제1 히터 및 제2 히터를 포함하는 복수의 히터; 전력 회로; 배터리; 온도 센서, 상기 제1 히터, 상기 제2 히터, 상기 전력 회로 및 상기 배터리에 전기적으로 연결된 전력 네트워크; 및 상기 전력 네트워크와 전기적으로 연결된 프로세서를 포함할 수 있다. 상기 프로세서는, 상기 전력 회로에서 상기 제1 히터 및 상기 제2 히터 중 어느 하나에 전력을 공급하도록 상기 전력 네트워크를 제어하고, 상기 온도 센서의 출력 신호에 기초하여 상기 전력 회로 및 상기 배터리에서 상기 제1 히터 및 상기 제2 히터에 전력을 공급하도록 상기 전력 네트워크를 제어할 수 있다.

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Номер записи: 43