Abstract
본 논문에서는 microstrip line에서 광대역 특성을 갖는 ENG(Epsilon Negative) ZOR(Zeroth-Order Resonant) 안테나를 설계, 제작, 측정 및 비교, 분석하였다. 제안된 안테나는 mushroom 구조를 이용하여 설계하였고, 영차 공진 단일 셀의 공진 주파수는 12 GHz이다. 안테나 크기는 <TEX>$7.65{\times}1.31{\times}2.37\;mm$</TEX>(or <TEX>$0.306{\times}0.053{\times}0.095\;{\lambda}_0$</TEX> at 9.2 GHz)이다. 설계 방법은 방사 손실을 고려한 전송 이론 모델링을 바탕으로 설계하였다. 정합을 위한 결합 커패시터를 사용해서 안테나 공진 주파수가 9.2 GHz로 낮아졌으며, 이 주파수에서 측정된 대역폭은 1,831 MHz(20.0%)이며, 최대 이득은 7.1 dBi이다. This Letter presents a wideband ENG(Epsilon Negative) ZOR(Zeroth-Order Resonant) antenna designed on a microstrip line. It has a mushroom structure and its size is only <TEX>$7.65{\times}1.31{\times}2.37\;mm$</TEX>(or <TEX>$0.306{\times}0.053{\times}0.095\;{\lambda}_0$</TEX> at 12 GHz) owing to zeroth-order resonance. The design procedures with closed form solutions are provided using transmission line theory considering radiation loss. The measured antenna bandwidth is about 20.0 % at 9.2 GHz and antenna gain is 7.1 dBi despite the compact size.
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More From: The Journal of Korean Institute of Electromagnetic Engineering and Science
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