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A Bluetooth/WiFi Dual-Mode RF Front-End Module Using LTCC Technology

LTCC 기술을 이용한 Bluetooth/WiFi 이중 모드 무선 전단부 모듈 구현

  • Ham, Beom-Cheol (Department of Electronic Engineering, Hankook University of Foreign Studies) ;
  • Ryu, Jong-In (Packaging Research Center, Korea Electronics Technology Institute) ;
  • Kim, Jun-Chul (Packaging Research Center, Korea Electronics Technology Institute) ;
  • Kim, Dong-Su (Packaging Research Center, Korea Electronics Technology Institute) ;
  • Park, Young-Cheol (Department of Electronic Engineering, Hankook University of Foreign Studies)
  • 함범철 (한국외국어대학교 전자공학과) ;
  • 유종인 (전자부품연구원 시스템패키징센터) ;
  • 김준철 (전자부품연구원 시스템패키징센터) ;
  • 김동수 (전자부품연구원 시스템패키징센터) ;
  • 박영철 (한국외국어대학교 전자공학과)
  • Received : 2012.04.18
  • Accepted : 2012.07.20
  • Published : 2012.08.31

Abstract

This paper presents a compact bluetooth/WiFi dual-mode dual-band RF front-end module(FEM) is realized by low temperature co-fired ceramic(LTCC) technology. The proposed RF front-end module consists of a diplexer, baluns in the LTCC substrate, and an SPDT switch, an SP3T switch on the LTCC substrate. In order to reduce the module size and increase integration level, the proposed diplexer and balun are designed using LC lumped elements. The parasitic elements caused by coupling effect between metal pattern layers and ground plane layer are considered during the design. The fabricated dual-mode RF front-end module has 13 pattern layers including three inner ground layers and it occupies less than $3.0mm{\times}3.7mm{\times}0.66mm$.

본 논문에서는 저온 동시 소성 세라믹(Low Temperature Co-fired Ceramic: LTCC) 기술을 사용하여 블루투스와 WiFi에서 동작하는 무선 전단부 모듈(RF Front-end Module)을 설계, 구현하였다. 무선 전단부 모듈은 2.4/5 GHz 대역 다이플렉서와 2 GHz 대역 발룬, 5 GHz 대역 발룬, 그리고 송 수신용 SPDT 스위치와 SP3T 스위치로 구성되어 있다. LTCC의 설계에 있어, 적층 구조의 특성으로 인해 발생되는 예상 기생 성분은 시뮬레이션을 활용하여 설계하였다. 제작한 무선 전단부 모듈은 내부 접지(inner ground) 3개 층을 포함하여 총 13개 패턴으로 구성되었으며, 무선 전단부 모듈의 크기는 $3.0mm{\times}3.7mm{\times}0.66mm$이다.

Keywords

References

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