Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Signal Cancellation Characteristics of Cavity Delay Filter Module for LPA

LPA용 캐비티 지연 필터 모듈의 신호 상쇄 특성 연구

  • 권영만 (인천대학교 전자공학과) ;
  • 이기희 (인천대학교 전자공학과) ;
  • 선태원 (인천대학교 전자공학과) ;
  • 구경원 (인천대학교 전자공학과)
  • Published : 2001.11.01
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Abstract

A cavity delay filter module for IMT-2000 LPA has been developed with 0.9dB insertion loss, 0.1dB/0.6$^{\circ}$ gain/phase flatness. Broadband signal cancellation of the module has been simulated using the measured S parameter, and gain, phase and group delay have been matched to satisfy the signal cancellation of the module. In the experiment, the value of designed parameters are used and 40dB signal cancellation has been obtained over 100MHz bandwidth. Also the sampling cancellation has been shown to be the similar performance of the feedforward output cancellation.

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