Unequal Wilkinson Power Divider with Reduced Arm Length for Size Miniaturization

Zhi Xia Du, Xiu Yin Zhang, Kai Xu Wang, Hsuan Ling Kao, Xiao Lan Zhao, Xiao Huan Li

Research output: Contribution to journalJournal Article peer-review

26 Scopus citations


This paper presents a compact unequal Wilkinson power divider (WPD) with a reduced arm length. The unequal power divider consists of four arms and the isolation elements, including a compensating capacitor and isolation resistor. Compared with the conventional WPD, the electric length θ of the arms between the input port and the isolation elements is much shorter, and thus, compact size can be obtained. A theoretical analysis is carried out, and design equations are obtained. In addition, a study is carried out to characterize the isolation bandwidth and output port return loss bandwidth with different values of θ . For validation, two power dividers operating at 1.5 GHz are implemented with various size and isolation bandwidths. Around 50% size reduction and good performance are obtained.

Original languageEnglish
Article number7390223
Pages (from-to)282-289
Number of pages8
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Issue number2
StatePublished - 02 2016

Bibliographical note

Publisher Copyright:
© 2015 IEEE.


  • Isolation bandwidth
  • Wilkinson power divider (WPD).
  • miniaturization
  • unequal power division


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