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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2018-03-24
Design of Miniaturized Rat-Race Couplers with Arbitrary Power Division Ratios
By
Xiao Yang,

    Dr. Xiao Yang

    Air-Defense and Antimissile Institute of Air Force Engineering University

    China

    Homepage

Zhenheng Liao,

    Dr. Zhenheng Liao

    Air and Missile Defense College of Air Force Engineering University

    China

    Homepage

Xu-Chun Zhang

    Dr. Xu-Chun Zhang

    Air and Missile Defense College

    Air Force Engineering University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 74, 83-89, 2018
doi:10.2528/PIERL17110805 | Google Scholar

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.
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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
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