The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Lumped Element MMIC Direction Coupler Based on Parallel Coupled-Line Theory

평행 결합선로 이론에 근거한 MMIC 집중 소자형 방향성 결합기

  • 강명수 (국민대 공대 전자ㆍ정보통신공학과) ;
  • 박준석 (국민대 공대 전자ㆍ정보통신공학과) ;
  • 이재학 ((주)웨이브아이시스 생산기술센터) ;
  • 김형석 (중앙대 전자전기공학부)
  • Published : 2004.11.01
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Abstract

In this paper, lumped equivalent circuits for a conventional parallel directional coupler are proposed. This equivalent circuits only have self inductance and self capacitance, so we can design exact lumped equivalent circuit. The equivalent circuit and design formula for the presented lumped element coupler is derived based on the even- and odd-mode properties of parallel-coupled line. By using the derived design formula, we have designed the 3dB and 4.7dB MMIC couplers at the center frequency of 3.4GHz and 5.6GHz respectively. Measurements for the designed MMIC directional couplers show at 4dB and 5.2dB-coupling value at the center frequency of 3.4GHz and 5.6GHz. Excellent agreements between simulation results and measurement results on the designed directional couplers show the validity of this paper

Keywords

References

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