Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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GPS and Wireless LAN Bandpass Filter based on LTCC

LTCC를 이용한 GPS와 WLAN 대역통과 여파기

  • Kim, Young (Department of Electronic Engineering, Kumoh National Institute of Technology) ;
  • Yun, Jeong-Ho (Department of Electronic Engineering, Kumoh National Institute of Technology)
  • 김영 (금오공과대학교 전자공학과) ;
  • 윤정호 (금오공과대학교 전자공학과)
  • Received : 2012.03.07
  • Accepted : 2012.04.30
  • Published : 2012.04.30
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Abstract

This paper presents a bandpass fitler of GPS and WLAN band based on LTCC. The structure of bandpass fitler consists of a Butterworth lowpass fitler and highpass filter using CRLH (Composite Right/Left-Handed) transmission line. Using green sheet with dielectric constant 7.2, we fabricated the bandpass filter that satisfied GPS and WLAN band characteristics. We are implemented the bandpass filter at center frequency 1.5 GHz (GPS) and 2.4 GHz (WLAN). Its insertion loss are 1.66 dB at GPS and 3.20 dB at WLAN respectively.

본 논문은 LTCC를 이용하여 구현된 GPS와 WLAN용 대역통과 필터 설계방법을 제안한 것이다. 여기서 구현한 여파기는 버터워스 저역통과 여파기와 CRLH(Composite Right/Left-Handed) 전송선로의 고역통과 특성을 결합한 대역 통과 여파기를 설계하였다. 이렇게 설계된 여파기는 유전율 7.2의 그린쉬트를 이용한 LTCC 공정을 사용하여 1.5 GHz의 GPS와 2.4 GHz의 WLAN 대역의 대역통과 여파기를 제작하였다. 제작된 여파기의 삽입손실 결과는 1.5 GHz GPS대역에서 1.66 dB 또, 2.4 GHz WLAN 대역에서는 3.20 dB를 만족하는 대역통과 특성을 얻었다.

Keywords

References

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