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H-Plane 8-Way Rectangular Waveguide Power Divider Using Y-Junction

Y-Junction을 이용한 H-평면 8-Way 구형 도파관 전력 분배기

  • Lee, Sang-Heun (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Yoon, Ji-Hwan (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Yoon, Young-Joong (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Jun-Yeon (Agency for Defense Development) ;
  • Lee, Woo-Sang (Agency for Defense Development) ;
  • Park, Seul-Gi (Electronic Warfare R&D Center, LIG Nex1 Co. Ltd.)
  • 이상흔 (연세대학교 전기전자공학과) ;
  • 윤지환 (연세대학교 전기전자공학과) ;
  • 윤영중 (연세대학교 전기전자공학과) ;
  • 김준연 (국방과학연구소) ;
  • 이우상 (국방과학연구소) ;
  • 박슬기 (LIG넥스원(주) 연구개발본부 전자전연구센터)
  • Received : 2011.09.27
  • Accepted : 2011.12.19
  • Published : 2012.02.29

Abstract

This paper proposes a H-plane 8-way rectangular waveguide power divider using Y-junction. A general N-way power divider can be composed of multi-stage T-junctions. However, if the distances of output ports are close, the matching characteristic is not improved by using only T-junctions because of space limitation. In this case, since other types of 3-port junctions should be used to final output stage, Y-junctions are used with T-junctions in this paper. The proposed Y-junction uses the tapered-line impedance transformer and inductive irises to improve impedance matching characteristic. The 8-way power divider using Y-junction is fabricated and measured. The measured return loss and insertion loss from input port to output port are -30.8 dB and -9.3 dB at operating frequency, respectively. The measured maximum phase difference is about $1^{\circ}$. Therefore, the proposed power divider will be useful to apply to various microwave systems, which need to divide the input power equally, such as feed networks for array antennas.

Keywords

Waveguide;H-Plane Power Divider;T-Junction;Y-Junction;Feed Network

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