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Implementation of Small Active Antenna for GPS/GLONASS Receiving

GPS/GLONASS 수신용 소형 액티브 안테나의 구현

  • Received : 2014.12.12
  • Accepted : 2015.04.10
  • Published : 2015.04.30

Abstract

In this paper, GPS / GLONASS receiving a small active antenna is proposed. A microstrip patch antenna which supports dual-band (GPS and GLONASS) was optimized. The antenna size is $13{\times}13{\times}3.6mm$. The jig was changed to confirm the proposed antenna characteristic size, was adjusted to feed gap of the patch antenna, it was confirmed by change in LNA shield case or not. The antenna jig size is $65.6{\times}13{\times}0.8mm$. The maximum gain of the GPS band is 3.78dBi, the maximum gain of the GLONASS bands is 4dBi. To amplify the Satellite reception signal level, one-stage low noise amplifier(LNA) was designed. The LNA chip was using the BGA715 N7, the LNA gain is 19.9dB. The utilization possibility of the GPS / GLONASS receiving a small active antenna could be confirmed according to compare and analyze the simulation and measurement data.

본 논문에서는 GPS/GLONASS 수신용 소형 액티브 안테나를 제안하였다. GPS(1.575.42MHz)와 GLONASS(1.602MHz) 듀얼 대역을 지원하는 마이크로스트립 패치 안테나를 최적화하였고, 안테나의 크기는 $13{\times}13{\times}3.6mm$이다. 제안한 안테나 특성 확인을 위하여 지그 크기 변화를 주었고, 패치안테나의 급전 간격을 조정하였고, LNA 쉴드 케이스 유무에 따른 변화로 확인하였다. 안테나 지그의 크기는 $65.6{\times}13{\times}0.8mm$이다. GPS 대역의 최대 이득은 3.78dBi이고, GLONASS 대역의 최대 이득은 4dBi이다. 위성 수신레벨을 증폭하기 위한 저잡음 증폭기는 1단 LNA를 설계하였다. LNA 칩은 BGA715N7를 이용하였고, LNA 이득은 19.9dB이다. 시뮬레이션과 측정 데이터를 비교 분석한 결과 GPS/GLONASS 수신용 소형 액티브 안테나의 실용화 가능성을 확인할 수 있었다.

Keywords

References

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