Vol. 74

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2018-03-24

Design of Miniaturized Rat-Race Couplers with Arbitrary Power Division Ratios

By Xiao Yang, Zhenheng Liao, and Xu-Chun Zhang
Progress In Electromagnetics Research Letters, Vol. 74, 83-89, 2018
doi:10.2528/PIERL17110805

Abstract

A miniaturized rat-race coupler with arbitrary power division ratio is proposed in this paper. The design formulas of the rat-race coupler with arbitrary power division ratio are derived using the even-odd decomposition analysis. The proposed structure demonstrates miniaturized size and perfect isolation due to adding phase inverter to the branch. For demonstration, a 20 dB rat-race coupler operating at 1 GHz with 81.34% size reduction is designed and fabricated. There is good agreement between measured and simulated results.

Citation


Xiao Yang, Zhenheng Liao, and Xu-Chun Zhang, "Design of Miniaturized Rat-Race Couplers with Arbitrary Power Division Ratios," Progress In Electromagnetics Research Letters, Vol. 74, 83-89, 2018.
doi:10.2528/PIERL17110805
http://jpier.org/PIERL/pier.php?paper=17110805

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