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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-08-16
Eigenmode Decoupling for MIMO Loop-Antenna Based on 180° Coupler
By
Shaoli Zuo,

    Dr. Shaoli Zuo

    Xidian University

    China

    Homepage

Ying-Zeng Yin,

    Professor Ying-Zeng Yin

    Xidian University

    China

    Homepage

Zhi-Ya Zhang,

    Dr. Zhi-Ya Zhang

    School of Electronic Engineering

    Xidian University

    China

    Homepage

Wei-Jun Wu,

    Dr. Wei-Jun Wu

    National Key Laboratory of Antennas and Microwave Technology

    Xidian University

    China

    Homepage

Jiao-Jiao Xie

    Dr. Jiao-Jiao Xie

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 26, 11-20, 2011
doi:10.2528/PIERL11071109 | Google Scholar

Abstract
A low-cost, high isolation, printed loop-antenna system for multiple-input multiple-output (MIMO) applications in the 2.4 GHz WLAN band is presented. By feeding the orthogonal eigenmodes of the array, port decoupling (S21< -20 dB) with tightly coupled elements (only 0.07λ separation) is obtained. The orthogonal eigenmodes are realized based on 180° coupler. Then decoupled external ports of the feed network may be matched independently by using conventional matching circuits. With this low-cost and high isolation characteristic, it is very suitable for being embedded inside a wireless access point (AP).
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Citation
Shaoli Zuo, Ying-Zeng Yin, Zhi-Ya Zhang, Wei-Jun Wu, and Jiao-Jiao Xie, "Eigenmode Decoupling for MIMO Loop-Antenna Based on 180° Coupler," Progress In Electromagnetics Research Letters, Vol. 26, 11-20, 2011.
doi:10.2528/PIERL11071109
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