An analytical approach for a novel coupled-line dual-band Wilkinson power divider

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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  • Yongle Wu
  • Yuanan Liu
  • Quan Xue


Original languageEnglish
Article number5607333
Pages (from-to)286-294
Journal / PublicationIEEE Transactions on Microwave Theory and Techniques
Issue number2
Publication statusPublished - Feb 2011


A novel generalized coupled-line circuit structure for a dual-band Wilkinson power divider is proposed. The proposed power divider is composed of two coupled lines with different even- and odd-mode characteristic impedances and two lumped resistors. Using rigorous even- and odd-mode analysis, the analytical design equations for this proposed power divider are obtained and the ideal closed-form scattering parameters are constructed. Since the traditional transmission line is a special case of coupled line (coupled coefficient is zero), it is found that traditional noncoupled-line dual-band (including single band) Wilkinson power dividers and previous dual-band coupled-line power dividers are special cases of this generalized power divider. As a typical example, which could only be designed by using this given design equations, a compact microstrip 3-dB power divider operating at both 1.1 and 2.2 GHz is designed, fabricated, and measured. There is good agreement between calculated and measured results. © 2011 IEEE.

Research Area(s)

  • Coupled line, dual band, Wilkinson power divider