Dual Band Design of Aperture-Coupled Cavity-Fed Microstrip Antenna

이중 대역 개구면 결합 공진기 급전 마이크로스트립 안테나 설계

  • Jang, Guk-Hyun (School of Electrical and Electronic Engineering Chung-Ang University) ;
  • Nam, Kyung-Min (School of Electrical and Electronic Engineering Chung-Ang University) ;
  • Lee, Jang-Hwan (School of Electrical and Electronic Engineering Chung-Ang University) ;
  • Nam, Sang-Ho (School of Electrical and Electronic Engineering Chung-Ang University) ;
  • Kim, Chul-Un (School of Electrical and Electronic Engineering Chung-Ang University) ;
  • Kim, Jeong-Phill (School of Electrical and Electronic Engineering Chung-Ang University)
  • Published : 2007.03.25

Abstract

A simple but accurate equivalent circuit of an aperture-coupled cavity-fed microstrip patch antenna is developed. It consists of ideal transformers, admittance elements, and transmission lines, and the related circuit element values are computed by applying the reciprocity theorem and complex power concept with the spectral-domain immittance approach. After validating by the published design example, a dual-band antenna was designed with the help of a hybrid optimization method. For this purpose, the Genetic Algorithm is applied with the Nelder-Mead simplex method. The obtained good results show that this approach turned out to be a very efficient tool for the design of aperture-coupled cavity-fed microstrip patch antenna having various structural design parameters.

개구면 결합 공진기 급전 마이크로스트립 패치 안테나의 단순하고도 정확한 등가 회로를 추출한다. 이 등가회로는 이상적인 트랜스포머, 어드미턴스 소자, 그리고 전송선으로 구성되고 각 소자 값들은 가역 정리와 스펙트럼 영역 이미턴스 방법에 기반한 복소 전력 개념으로부터 구할 수 있다. 기 게재된 논문의 연구 결과를 이용하여 제안한 등가회로의 타당성을 검증한 후 이중 대역 안테나를 유전 알고리즘과 Holder-Mead 방법을 통한 이종 진화적 최적화 방법으로 설계하였다. 설계 목표치에 적합한 결과를 도출하였고, 이 결과는 이종 진화적 최적화 방법이 설계에 매우 효율직임을 확인해 준다.

Keywords

References

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