대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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유한 요소 해석에 의한 평면형 결합 선로의 설계 파라미터 추출

Extraction of Design Parameters for Planar Coupled Lines

  • 이필용 (순천향대학교 정보기술공학부) ;
  • 박준석 (순천향대학교 정보기술공학부) ;
  • 안달 (순천향대학교 정보기술공학부) ;
  • 김헝석 (순천향대학교 정보기술공학부)
  • Lee, Pil-Yong (Division of Information Technology Engineering, Soonchunhyang University) ;
  • Park, Jun-Seok (Division of Information Technology Engineering, Soonchunhyang University) ;
  • Ahn, Dal (Division of Information Technology Engineering, Soonchunhyang University) ;
  • Kim, Hysons-Seok (Division of Information Technology Engineering, Soonchunhyang University)
  • 발행 : 2000.07.17
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초록

In this paper we implemented a novel re-entrant mode microstrip directional coupler for realizing the high directivity characteristic using finite element (FE) analysis. In microstrip configuration, the high directivity can be reached by matching the even- and odd-mode effective phase velocities. Through the values of capacitance obtained from 2-dimensional finite element(FE) analysis, the phase velocities for each mode and the design parameter were extracted for the proposed coupled-line configuration. Based on the extracted design parameter with phase matching condition we designed and fabricated 30dB directional coupler at 850MHz. Experimental results show good performance with excellent isolation.

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