Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Power Dividers for High Splitting Ratios using Transmission Line Connected with Open and Short Stubs

단선과 단락 스터브가 연결된 전송선로를 이용한 높은 분배비율을 갖는 전력 분배기

  • Kim, Young (School of Electronic Engineering, Kumoh National Institute of Technology)
  • 김영 (금오공과대학교 전자공학부)
  • Received : 2021.04.29
  • Accepted : 2021.06.23
  • Published : 2021.06.30
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Abstract

This paper proposes a method of implementing an unequal power divider for high splitting ratios by using transmission lines connected with open and short stubs. The proposed method is an equivalent circuit analysis of a transmission line with an additional port so that it can be converted to an arbitrary impedance in the center of a 2-port transmission line and a 3-port transmission line with an open or short stub connected in parallel to each port. To prove the validity of this method, a Wilkinson power divider with k2 = 20 dB splitting ratio and a Gysel power divider with k2 = 17 dB splitting ratio were designed at a center frequency of 1 GHz using a 3-port transmission line equivalent circuit. The experimental results of the electrical characteristics are in good agreement with the simulation.

본 논문은 단락 또는 단선 스터브가 연결된 전송선로를 이용하여 높은 분배 비율을 갖는 비대칭 전력 분배기를 구현하는 방법을 제안하였다. 제안된 방법은 2포트 전송선로 중앙에 임의의 임피던스로 변환할 수 있도록 별도의 포트를 추가한 3포트 전송선로와 단선 또는 단락 스터브가 각 포트에 병렬로 연결된 3포트 전송선로를 등가회로로 보고 회로를 해석한 것이다. 이러한 방법의 타당성을 증명하기 위해서, 분배 비율 k2 = 20 dB를 갖는 윌킨슨 전력분배기와 k2 = 17 dB를 갖는 Gysel 전력분배기를 3포트 전송선로 등가회로를 이용하여 중심주파수 1 GHz에서 설계하였으며, 전기적 특성의 실험 결과는 시뮬레이션과 잘 일치함을 확인하였다.

Keywords

Acknowledgement

이 연구는 금오공과대학교 학술연구비로 지원되었음(202001700001)

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