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공덕규 한국군사과학기술학회 2001 한국군사과학기술학회지 Vol.4 No.1
In this paper, the monopulse channel receiver which can be matched between channels through a wide bandwidth has been proposed. The effects of the gain and phase imbalance between channels on the slope of monopulse error signal were analyzed. Also, the matching method between channels in a wide bandwidth was proposed, by which monopulse slope could be stabilized. Using the implemented monopulse radar system the monopulse slope was measured in the anechoic chamber which include the moving horn antenna and the target signal generator. The results show that the wide band matching method is useful and applicable to various channel receivers
이호준,김윤진,윤승구,정해창,공덕규,이재웅,변영진,Lee, Ho-Joon,Kim, Youn-Jin,Yoon, Seung-Gu,Jeong, Hae-Chang,Kong, Deok-Kyu,Yi, Jae-Woong,Byun, Young-Jin 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.5
We designed the multiple scattering points generation system to simulate an actual situation of target signal for high range resolution radar system. This provides replicating the target signals and controlling the status of target signals for radar system. This is composed transmit antenna and multi target generator. Transmit antenna is waveguide array antenna and multi target generator has signal distribution module and control & power module. Multi target generator is able to provide the high isolation and variable output power. Moreover, in order to monitor all output signals of the multi target generator, the flows of signals are programed in control & power module. The performance is demonstrated using experimented results of high range resolution radar.
PIN 다이오드를 사용한 Ku 대역 평판형 리미터의 설계 및 제작
김탁영,양승식,염경환,공덕규,김소수,Kim Tak-Young,Yang Seong-Sik,Yeom Kyung-Whan,Kong Deok-Kyu,Kim So-Su 한국전자파학회 2006 한국전자파학회논문지 Vol.17 No.4
본 논문에서는 기존의 실험 위주의 설계 기법보다는 해석적 방법에 의하여 3단으로 구성된 평판형 리미터 설계 및 제작 기법을 제시하였다. 해석 결과 PIN 다이오드로 구성된 리미터에 고출력의 RF 입력이 인가될 경우 두 가지 형태의 누설 전력이 발생하며 이의 PIN 다이오드 파라미터와 연관성을 설명하였다. 설계된 리미터 회로는 1단과 2단은 PIN diode로 구성되며 3단은 Schottky 다이오드를 사용 구성하였다. 이를 통하여 제작된 리미터회로는 약신호시 삽입 손실 0.8 dB, 20 W RF 입력시 첨두 누설 전력(spike leakage) 12 dBm, 정상 누설 전력 12 dBm의 사양을 보여주고 있다. In this paper, the analytic design technique for a planar PIN diode limiter is presented rather than the conventional design heavily relying on the experiments. The novel analysis fur the PIN diode limiter shows the leakage is composed of two kinds of leakages and the relationship between the leakages and the PIN diode parameters. The designed limiter consists of 3 stages; the front two stages with two PM diodes and the final stage with Schottky diode pair. The fabricated limiter shows the insertion loss of 0.8 dB for the small input power, spike leakage of 12 Bm, flat leakage of 12 dBm for the 20 W RF power.