The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Improvement of the Microstrip Patch Bandpass Filter using Interdigital Couping Structure and Embeded Slot

깍지 낀 결합 구조와 슬롯을 이용한 마이크로스트립 패치 대역통과필터의 특성 개선

  • Kim, Hyun (Department of Electronic Engineering, Dong Kuk University) ;
  • Lim, Hyun-Jun (Department of Electronic Engineering, Dong Kuk University) ;
  • Yoon, Hyun-Bo (Department of Electronic Engineering, Dong Kuk University)
  • 김현 (동국대학교 전자공학과) ;
  • 임현준 (동국대학교 전자공학과) ;
  • 윤현보 (동국대학교 전자공학과)
  • Published : 2001.06.01
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Abstract

In this paper, A new microstrip bandpass filter is proposed. The novelty of the proposed structures is to use a interdigital capacitor and embeded slot that are fanned on a patch resonator such that its insertion loss and size can be significantly reduced simultaneously. As a result, it is found that the resonant frequency of patch filter designed at 5 GHz is decreased to 1.8946 GHz and the insertion loss is reduced from -2.168 dB to -0.379 dB. This proposed filter has small size and low insertion loss in comparison with the conventional parallel edge coupled bandpass filter.

본 논문에서는 새로운 구조의 마이크로스트립 패치 대역통과필터를 제안하였다. 이 구조에서는 필터의 삽입 손실과 크기를 동시에 줄이기 위해 패치구조에 깍지 낀 결합구조와슬롯을 적용하였다. 그 결과, 5 GHz의 공진 주파수로 설계한 패티 대역통과 필터를 공지 주파수는 1.8946 GHz로 삽입 손실은 -2.168 dB에서 -0.379 dB로 줄일 수 있었다. 제안된 필터는 1.8946 GHz 공진 주파수의 상용화된 마이크로스트립 필터인 최소단위의 평행 edge 결합필터의 길이와 비교할 때 64.9 % 줄일 수 있었고, 삽입손실도 더 우수한 특성을 가짐을 확인하였다.

Keywords

References

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