대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

CDMA 기지국용 SAW BAND PASS FILTER 의 설계 및 제작

Design and Fabrication of CDMA Base Station SAW Band Pass Filter

  • 김재천 (인하대학교 대학원 첨단정밀공학과) ;
  • 윤영섭 (인하대학교 대학원 첨단정밀공학과)
  • 발행 : 1998.10.01
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초록

CDMA base station SAW filter has been designed and fabricated successfully. Through the computer simulation, SAW filter is designed to have center frequency of 69.99MHz, ripples lower than 0.7dB and rejection level lower than 50dB. To obtain low noise band pass SAW filter, Input electrode has a apodization type and output electrode has a withdrawal type. For the fabrication of the SAW filter, Al thin film is deposited to the quartz substrates. The fabricated SAW filter has center frequency of 70.5MHz, ripples of 1dB and rejection level of 45dB.

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