Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Lingxiao Jiao, Yongle Wu, Weiwei Zhang, Mingxing Li, Yuanan Liu, Quan Xue, Zabih Ghassemlooy

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)
9 Downloads (Pure)

Abstract

For the first time, the 6-port quadrature and rat-race couplers with balanced-unbalanced-hybrid ports are proposed. The corresponding design methodology is presented, which is capable of designing the proposed couplers with arbitrary power divisions and terminated resistances. In this paper, four types including quadrature and rat-race couplers are fully analyzed, covering all the application configurations of the balanced/unbalanced ports. Besides, the design equations are rigorously derived, with the final design procedures presented. Eventually, prototypes of the four coupler types are fabricated and experimentally measured. The final results sufficiently validate the proposed methodology.
Original languageEnglish
Pages (from-to)1249-1262
JournalIEEE Transactions on Microwave Theory and Techniques
Volume66
Issue number3
Early online date12 Dec 2017
DOIs
Publication statusPublished - 1 Mar 2018

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