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- W2344635409 abstract "네거티브 임피던스 변환기를 이용한 전기적 소형 안테나의 논 포스터 임피던스 매칭 방법을 제안한다. 사용한 안테나는 저항성 V 다이폴 안테나로써, 이 안테나는 급전점에서 매우 큰 입력 리액턴스를 가지기 때문에 반사손실이 매우 크다. 급전점에 장착하는 논 포스터 매칭 회로는 두 단의 네거티브 임피던스 변환기와 단 사이의 추가 커패시턴스로 이루어진다. 네거티브 임피던스 변환기는 연산 증폭기와 저항 소자를 사용하여 구현한다. 실제 사용하는 연산 증폭기의 유한 오픈 루프 이득을 고려한 임피던스를 분석하고, 설계에 적용하였다. 안테나 입력 임피던스를 포함한 전체 매칭 회로에 대해 안정성 검사를 수행하였고, 설계된 매칭 회로는 제작되어 실험으로 그 성능을 검증하였다. 임피던스 매칭 후의 저항성 V 다이폴 안테나의 입력 임피던스를 측정한 결과, 제안한 논 포스터 매칭 회로가 효과적으로 안테나의 입력 리액턴스를 줄이는 것을 확인하였다. Negative impedance converter(NIC)-based non-Foster impedance matching is proposed for an electrically small antenna. The antenna considered in this work is a resistively loaded vee dipole(RVD) antenna, which has considerable reflection at the feed point because of its large negative input reactance. The non-Foster matching circuit built near the feed point consists of two-stage NIC circuit and a capacitor connected between the stages. The NIC is realized by using operational amplifiers(op-amps) and resistors. The circuit is designed by considering of the input impedance according to the finite open-loop gain of the practical NICs. The stability test of the impedance-matched RVD antenna is performed. The non- Foster matching circuit is implemented with the RVD antenna. The measured impedance demonstrates that the proposed non-Foster matching circuit effectively reduces the input reactance of the RVD antenna." @default.
- W2344635409 created "2016-06-24" @default.
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- W2344635409 date "2015-07-30" @default.
- W2344635409 modified "2023-10-18" @default.
- W2344635409 title "NIC-Based Non-Foster Impedance Matching of a Resistively Loaded Vee Dipole Antenna" @default.
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- W2344635409 doi "https://doi.org/10.5515/kjkiees.2015.26.7.597" @default.
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