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주기적 접지구조를 이용한 실리콘 RFIC용 초소형 윌킨슨 전력분배기
주정갑(Jeong Gab Ju),박영배(Young Bae Park),정보라(Bo Ra Jung),정장현(Jang Hyun Jung),강석엽(Suk Youb Kang),윤영(Young Yun) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
In this paper, using a coplanar waveguide employing Periodic Ground Structure (PGS), highly miniaturized on-chip wilkinson power divider was realized on Si radio frequency integrated circuit (RFIC). The wilkinson power divider exhibited good RF performances from 25 to 50 ㎓, and its size was 0.44 X 0.1 ㎟, which is 4.8% of conventional one.
실리콘 RFIC상에서 주기적으로 배열된 접지 스트립 구조를 가지는 개방선로의 특성 연구
정보라(Bo-Ra Jung),박영배(Young-Bae Park),주정갑(Jeong-Gab Ju),정장현(Jang-Hyeon Jeong),강석엽(Suk-Youb Kang),윤영(Young Yun) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
In this paper, we studied about open stub employing PAGS(Periodically arrayed ground-strip structure) for application to miniaturized on-chip passive component on silicon RFIC. As it is known, PAGS has slow-wave characteristic due to its periodic structure. In this work, using this characteristic in periodic structure, we propose about highly miniaturized passive components on silicon RFIC.
권병문(Byung-Moon Kwon),신용설(Yong-Sul Shin),마근수(Keun-Su Ma),주정갑(Jeong-Gab Ju),지기만(Ki-Man Ji) 한국항공우주학회 2019 韓國航空宇宙學會誌 Vol.47 No.5
본 논문은 시험발사체에 탑재된 송신기에서 송신되는 S 대역 신호에 의해 위성항법수신기에서 나타난 RF 신호간섭을 설명하고, 그 원인을 분석한다. 능동형 위성항법안테나의 LNA는 항법위성 신호와 비교하여 상대적으로 신호세기가 매우 높은 S 대역 신호에 의해 포화되었으며, 2개의 S 대역 신호가 위성항법안테나에 수신될 때마다 GNSS 대역에 해당하는 상호변조신호가 LNA에서 발생하였다. 이러한 현상으로 인해 위성항법수신기에서 계산된 항법위성신호의 C/N0가 크게 감쇄하였다. S 대역 신호에 의한 RF 신호간섭을 차단하기 위하여 위성항법안테나 LNA의 설계변경을 수행하였고, 설계변경 전․후의 LNA에 대해 수행한 비교시험을 통하여 설계변경된 LNA에서 S 대역 신호에 의한 RF 신호감쇄 현상이 억제될 수 있음을 확인하였다. This paper describes the RF(Radio Frequency) interference on the GNSS receiver due to the S-band signals transmitted from the transmitters in the Test Launch Vehicle, and analyzes the cause of the RF interference. Due to the S-band signals that have relatively high power levels compared with GNSS signals, an LNA(Low Noise Amplifier) in the active GNSS antenna was saturated, and the intermodulation signal within GNSS in-bands was produced in the LNA whenever two S-band signals were received from the GNSS antenna. For these reasons, the C/N0 of the satellite signals in the GNSS receiver was attenuated severely. The design of the LNA was changed in order to protect the RF interference due to the S-band signals and the suppression capability of the RF interference was confirmed in the new LNA through the comparison of the old LNA.
MMIC상에서 주기적으로 배치된 용량성 소자를 이용한 단파장 전송선로
정장현(Jang-Hyeon Jung),박영배(Young-Bae Park),정보라(Bo-Ra Jung),주정갑(Jeong-Gab Ju),강석엽(Suk-Youb Kang),윤영(Young Yun) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
In this study, short-wavelength transmission line employing periodically arrayed capacitive devices (PACD) structures were developed for application to a development of miniaturized on-chip passive components on GaAs monolithic microwave integrated circuit (MMIC). The transmission line employing PACD structure showed a wavelength much shorter than conventional microstrip line. Concretely, the wavelength of the transmission line employing PACD structure was 8% of the conventional microstrip line on GaAs substrate at 5㎓.
0.13 ㎛ CMOS 기술을 이용한 K 밴드 차량 레이다용 레지스트브 믹서
박영배(Young-Bae Park),정보라(Bo-Ra Jung),주정갑(Jeong-Gab Ju),정장현(Jang-Hyeon Jeong),강석엽(Suk-Youb Kang),윤영(Young Yun) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
This paper presents a low-power front-ended 24 ㎓ receiver resistive mixer, which was fabricated using 0.13 ㎛ RF CMOS technology for application to vehicle radar. For resistive receiver mixer, single ended resistive mixer was designed for high linearity characteristic and low power consumption. According to measured results, the proposed resistive mixer showed an improved linearity and low power consumption characteristic. At 24 ㎓, the resistive receiver mixer showed a conversion loss of -9 ㏈ and an input 1-㏈ gain compression point of -1 ㏈m at a low bias voltage of 0.3 V.