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Design and Fabrication of a Microstrip Patch Antenna with H-shape Aperture-Coupled structure for PCS Repeater

H자형 개구 결합구조를 갖는 PCS 중계기용 마이크로스트립 패치 안테나 설계 및 제작

  • 이중기 (주) 유타렉스) ;
  • 정찬권 (원광대학교 전기전자 및 정보공학부) ;
  • 강영진 (원광대학교 전기전자 및 정보공학부)
  • Published : 2007.03.31

Abstract

This paper is designed and producted the microstrip patch antenna which used aperture coupled feed structure, and had a comparatively hish gain and headband characteristic with a PCS substitution repeater antenna. The proposed antenna transformed a coupled slot into a H-type in order to improve a characteristic of a general aperture coupled feed antenna. It is this H-type form slot reduces back lobe from the antenna backside at the same time that a coupling between a power feed and patches is iccreased, and to have maximized a gain of an antenna. As a result of having measured the antenna which the VSWR was 1.5 or below and tied up the gain than 7.5dBi in the $1750{\sim}1870$[MHz] that was a PCS substitution, and a beamwidth became in $80^{\circ}$ and radio waves shadow was local, but accomplishment did PCS mobile communication service in building me smoothly, but confirmed what practical use can become.

본 논문에서는 개구 결합형 급전구조(aperture coupled feed)를 이용하여 비교적 높은 이득과 광대역 특성을 갖는 마이크로스트립 안테나(Microstrip patch antenna)를 PCS 대역의($1750{\sim}1870$MHz) 중계기용 안테나로 설계 및 제작하였다. 제안된 안테나는 일반 개구결합 안테나의 특성을 개선하기 위해 결합 슬랏을 H자 형태로 변형하였고, 이 H자형 슬랏은 급전과 패치 사이의 결합을 증가시키는 동시에 안테나 뒷단으로 부터의 백로브(back lobe)를 줄여 안테나의 이득을 최대화 시킨다. 제작한 안테나를 측정한 결과 PCS 대역인 $1750{\sim}1870$[MHz]에서 VSWR은 1.5이하였고 이득은 7.5dBi이상이었으며 빔폭은 $80^{\circ}$가 되어 전파 음영 지역이나 빌딩내에서 PCS 이동통신 서비스를 원활히 수행하는데 활용 될 수 있음을 확인하였다.

Keywords

References

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