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- W2073974851 abstract "본 논문에서는 능동 위상 배열 안테나(APAA: Active-Phased Array Antenna)의 능동 반사 계수(ARC: Active Reflection Coefficient) 개선 및 보호 회로 구성을 통한 안정적인 시스템 운용에 관하여 연구하였다. 수동 위상배열 안테나에서와 달리 APAA는 복사 소자와 송수신 모듈이 결합된 형태로 일반적인 수동 위상 배열 안테나의 반사 계수 특성과 차별된 새로운 ARC의 정의가 적용되어야 한다. ARC는 방사하는 소자로부터의 자기 반사계수 외에 인접한 방사 소자로부터 유기되는 결합량의 중첩을 고려한 반사 계수이다. 이는 능동 위상 배열 레이더(APAR: Active-Phased Array Radar) 시스템의 특성을 예측하고 분석하는데 중요한 파라미터가 된다. 운용 중 발생하는 높은 ARC는 시스템 성능 열화에 직접적인 원인이 된다. 본 논문에서는 APAR의 안정적인 운용을 위한 방안으로 ARC의 성능을 개선시키는 방안과 보호 회로를 통한 열화 방지 방안에 관하여 분석하였다. 실제 제작한 능동 위상 배열 안테나의 실험 결과를 통해 두 방안의 유효성을 검증하였다. In this paper, a stabilizd system operation through a composition of a protective circuit and an improvement of active reflection coefficient(ARC) is studied. Unlike the passive-phased array antenna, the APPA is a combined form of radiating element and transmitter-reciever module. Therefore, a definition of new ARC that differentiates itself from typical passive-phased array antenna must apply. The ARC is a reflection coefficient considering a superposition of a coupling from nearby radiating elements and self reflection. It is an important parameter that predicts and analyzes charateristics of a APPR system. A high level ARC is a direct source inducing a performance degradation of a system. In this paper, as a method for a stabilized operation of APAR, one method for improving a performance and another for degradation prevention are analyzed. An effectiveness of two methods was validated using experiment results of real-fabricated active-phased array antenna." @default.
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- W2073974851 date "2012-01-31" @default.
- W2073974851 modified "2023-09-23" @default.
- W2073974851 title "A Study on the Stabilized System Operation Considering the Reflection Characteristic of an Active-Phased Array Antenna" @default.
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- W2073974851 doi "https://doi.org/10.5515/kjkiees.2012.23.1.029" @default.
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