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- W2014048491 abstract "본 논문에서는 <TEX>$2{times}2$</TEX> 배열 안테나에 적용하여 분할된 원추형 빔 형성이 가능한 새로운 급전 구조를 제안한다. 제안된 급전 구조에는 네 개의 <TEX>$90^{circ}$</TEX> 하이브리드, 한 개의 크로스오버, 네 개의 <TEX>$90^{circ}$</TEX> 지연선을 사용하며, 이들은 서로 대칭적인 구조를 갖는다. 급전 구조의 성능을 검증하기 위하여 중심 주파수 2.57 GHz에서 동작하는 마이크로스트립 형태의 <TEX>$2{times}2$</TEX> 배열 안테나와 급전 구조를 제작하였고, 방사 패턴을 측정하였다. 측정된 안테나의 주 빔방향은 입력 포트의 선택에 따라 고도 방향으로는 <TEX>$45^{circ}$</TEX>에서, 방위각 방향으로는 <TEX>$45^{circ}$</TEX>, <TEX>$135^{circ}$</TEX>, <TEX>$225^{circ}$</TEX>, <TEX>$315^{circ}$</TEX>에서 최대지향성을 갖는 것을 확인하였다. We propose a novel feed network for a <TEX>$2{times}2$</TEX> array antenna to form a sectoral conical beam. The proposed feed network, which is a symmetrical structure, consists of four <TEX>$90^{circ}$</TEX> hybrids, a crossover, and four <TEX>$90^{circ}$</TEX> delay lines. To verify the performance of the feed network a <TEX>$2{times}2$</TEX> array antenna and the feed network are fabricated on a microstrip structure, and the radiation patterns are measured at the center frequency of 2.57 GHz. The maximum radiation is measured at the <TEX>$45^{circ}$</TEX> elevation angle and at the <TEX>$45^{circ}$</TEX>, <TEX>$135^{circ}$</TEX>, <TEX>$225^{circ}$</TEX>, and <TEX>$315^{circ}$</TEX> azimuth angles depending on the choice of the input port of the feed network." @default.
- W2014048491 created "2016-06-24" @default.
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- W2014048491 date "2009-05-31" @default.
- W2014048491 modified "2023-09-29" @default.
- W2014048491 title "A Novel Feed Network for a Sectoral Conical Beam" @default.
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- W2014048491 doi "https://doi.org/10.5515/kjkiees.2009.20.5.413" @default.
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