Design of a Compact Lowpass Filter having Wide Bandstop Characteristics for Microwave and Millimeter-Wave Circuit Applications

마이크로파 및 밀리미터파 회로 응용을 위한 넓은 저지대역 특성을 지닌 소형의 저역 통과 여파기 설계

  • 서재옥 (아주대학교 전자공학부) ;
  • 박성대 (아주대학교 전자공학부) ;
  • 김진양 (아주대학교 전자공학부) ;
  • 강남기 (전자부품연구원 고주파재료연구센터) ;
  • 이해영 (아주대학교 전자공학부)
  • Published : 2003.03.01


In this paper, we proposed novel multilayer photonic bandgap(PBG) structure using DSL(Descended Signal Line). From measurement result, the proposed PBG structure using DSL is reduced 72 % at size and increased 13 % at bandwidth compared to typical multilayer DGS(Defected Ground Structure). It is also reduced 42 % at size and increased 23 % at bandwidth compared to PBG structure using EGP(Elevated Ground Plane). In case of measurement for manufactured six PBG patterns, all patterns have the same cutoff frequency and bandstop characteristics. So it can be used for bandstop filter having very precise tolerance of below 300 MHz at 20 ㎓ if it is applied to real product and this filter will be useful for small microwave integrated circuit and module development.


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