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

Abstract

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.

본 논문에서는 DSL(Descended Signal Line)을 이용한 새로운 다층의 PBG 구조를 제안하였다. 측정 결과로부터 DSL을 이용한 제안된 PBG 구조는 일반적인 다층의 DGS 구조에 비하여 크기면에서 72 % 감소하였고 대역폭에서 13 % 증가하였다. 또한 EGP(Elevated Ground Plane)를 이용한 PBG 구조와 비교하면 제안된 구조는 크기가 42 % 감소하였고 대역폭이 23 % 증가하였다. 그리고 조작된 6 개의 PBG 구조들을 측정한 결과, 모든 패턴들이 동일한 차단주파수와 함께 저지대역 특성을 지님을 확인하였다. 따라서 본 논문에서 제안된 구조는 삽입손실이 20 ㏈인 20 ㎓에서 모든 패턴이 300 MHz 이하의 매우 정확한 오차(tolerance)를 가짐으로써 소형의 마이크로파 집적 회의나 모듈 개발에 효과적으로 활용될 수 있으리라 기대된다.

Keywords

References

  1. Phys. Rev. Lett. v.58 no.20 Ingibited spontaneous emission in solid-state physics and electronics E. Yablanovich
  2. IEEE MTT-S Int. Microwave Symp. Dig. MM-wave tapered slot antennas on micromashined photonic bandgap dielectrics T. J. Ellis;G. M. Rebeiz
  3. Microw. Opt. Tech. Lett. v.11 no.4 Antenna design with the use of photonic bandgap material as all dielectric planar reflectors M. P. Kesler;J. G. Maloney;B. L. Shirley
  4. IEEE Microwave and Wireless components Lett. v.11 no.11 Improvement of Broadband Feedforward Amplifier Using Photonic Bandgap Jinho Yoon;Chulhun Seo
  5. IEEE Trans. on Microwave Theory and Techniques v.47 no.8 A Uniplanar Compact Photonic-Bandgap(UC-PBG) Structure and Its Applications for Microwave Circuits F. R. Yang;K. P. Ma;Y. Qian;T. Itoh
  6. IEEE Transaction on Microwave Theory and Techniques v.49 no.3 Uniplanar One- Dimensional Photonic-Bandgap Structures and Resonators T. Y. Yun;K. Chang
  7. IEEE Microwave and Guided Letters v.8 no.2 Novel 2-D Photonic Bandgap Structure for Microstrip Lines V. Rakisic;Y. Qian;R. Coccioli;T. Itoh
  8. IEEE MTT-S Int. Microwave Symp. Dig. Unified CAD Model of Microstrip Line with Backside Aperture for Multilayer Integrated Circuit L. Zhu;H. Bu;K. Wu
  9. IEEE Microwave and Guided Wave Lett. v.9 no.1 Harmonic Control by Photonic Bandgap on Microstrip Patch Antenna Yasushi Horri;Makoto Tsutsumi
  10. IEEE Microwave and Guided Wave Lett. v.8 no.10 Photonic Bandgap Structures Used as Filters in Microstrip Circuits I. Rumsey;M. Piket-May;P. Keith Kelly
  11. IEEE Microwave and Guided Wave Lett. v.10 A Novel Photonic Bandgap Structure for Low-Pass Filter of Wide Stopband T. Kim;C. Seo
  12. Phys. Rev. Lett. v.80 no.13 3D Metallo-Dielectric Photonic Crystals with Strong Capacitive Coupling between Metallic Islands D. F. Sievenpiper;E. Yablonovitch;J. N. Winn;S. Fan;P. R. Villeneuve;J. D. Joannopoulos
  13. IEEE Transaction on Microwave Theory and Techniques v.47 no.11 High-Impedance Electromagnetic Srufaces with a Forbidden Frequency Band D. Sievenpiper;L. Zhang;R. F. J. Broas;N. G. Alexopolous;E. Yablonovitch