Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (1): 19-22.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Design of Waveguide Power Divider at W Band

Mei Zhi-lin1  Wang Zong-xin2  Dou Wen-bin2   

  1. 1. Postdoctoral Workstation of Guangzhou Radio Group, School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510656, Guangdong, China; 2. State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, Jiangsu, China
  • Received:2008-01-11 Revised:2008-02-25 Online:2009-01-25 Published:2009-01-25
  • Contact: 梅志林（1974-），男，博士后，主要从事微波研究． E-mail:zlmroy@163．com
  • About author:梅志林（1974-），男，博士后，主要从事微波研究．

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Abstract:

As for the waveguide power divider, an important component in microwave and millimeter wave systems, its traditional matching structure is difficult to realize at W band due to the machining difficulties. In order to solve this problem, this paper proposes an arc structure via the finite element method based on the weak form of Helmhohz equation. As the radius of the arc structure is that of the milling cutter, the structure contour matches well with the outer fringe of milling cutter and can be easily manufactured with a common milling machine, thus effectively reducing the manufacture cost. Moreover, a H-plane waveguide power divider and an E-plane one are designed using two pairs of arcs and three pairs of arcs, respectively. It is proved that the proposed design method is of engineering applicability because the calculated scattering parameters accord well with the experimental ones.

Key words: waveguide power divider, W band, Helmholtz equation, weak form, finite element method