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Design of patch antenna combined with slots for smart GPS module

Smart GPS 모듈용 슬롯과 결합된 패치안테나 설계

  • Jang, Min-Gyu (Department of Electronic Engineering, Kumoh National institute of Technology) ;
  • Lee, Young-Soon (Department of Electronic Engineering, Kumoh National institute of Technology) ;
  • Cho, Dong-Kyun (SMTEL Co., Ltd.)
  • 장민규 (금오공과대학교 전자공학과) ;
  • 이영순 (금오공과대학교 전자공학과) ;
  • 조동균 ((주) 에스엠텔)
  • Received : 2013.03.18
  • Accepted : 2013.04.30
  • Published : 2013.04.30

Abstract

In this paper, printed antenna which can be applied to a built-in wireless module of the security controller operating at global positioning system(GPS) L1 frequency band(1.575GHz) is proposed. The proposed antenna is basically composed of a microstrip patch antenna with inserting feed. In particular left and right slots which are respectively asymmetric are used for impedance matching, whereas slot with one open-end and shorting point are used on the bottom plane to set operating frequency and enhance bandwidth. It is observed at the desired GPS L1 frequency band that the radiation efficiency and gain of the proposed antenna are 90% and more than 4.8dBi respectively.

본 논문에서는 L1주파수대역(1.575GHz)을 사용하는 보안등제어기 내장형 무선 모듈에 적용 가능한 PCB(Printed Circuit Board) 인쇄형 GPS안테나를 제안하였다. 제안된 안테나는 삽입형 급전(insertion feeding)을 가지는 마이크로스트립 패치안테나를 기본구조로 하였다. 특히 임피던스 매칭을 위해 윗면에 좌/우 2개의 비대칭형 슬롯을 삽입하였으며, 아랫면에는 대역폭 증가와 주파수설정을 위하여 한 쪽 끝이 개방된 슬롯과 단락점(shorting point)을 적용하였다. 측정 결과 설계 목표로 한 GPS주파수 L1대역에서 90%의 방사효율과 4.8dBi 이상의 이득을 얻을 수 있었다.

Keywords

References

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