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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2018-08-17
Isolation Enhancement Using a Novel Array-Antenna Decoupling Surface for Microstrip Antennas
By
Zicheng Niu,

    Dr. Zicheng Niu

    Air and Missile Defense College

    Air Force Engineering University

    China

    Homepage

Hou Zhang,

    Dr. Hou Zhang

    Electromagnetic and Microwave Technology

    Missile Institute of Air Force Engineering University

    China

    Homepage

Qiang Chen,

    Dr. Qiang Chen

    Air and Missile Defense College of Air Force Engineering University

    China

    Homepage

Tao Zhong

    Dr. Tao Zhong

    Missile Institute of Airforce Engineering University

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 72, 49-59, 2018
doi:10.2528/PIERM18070502 | Google Scholar

Abstract
A novel array-antenna decoupling surface (ADS) for mutual coupling reduction in microstrip patch antenna is proposed in this paper. The proposed ADS is composed of a group of primary reflector patches and a pair of rectangular and T-shaped secondary reflector patches. Through generating the reflected waves with equal magnitude but out of phase of the coupling waves, the isolation of the antenna elements could be significantly improved by the novel proposed ADS. Then, for verification, a two-element microstrip antenna array covered by the proposed ADS with an edge-to-edge separation of 0.11λ0 (λ0 is the wavelength of the operating frequency in free space) was designed and fabricated. As expected, the experimental results have demonstrated that an additional 40.4 dB isolation enhancement at the resonant frequency was achieved by the proposed ADS. Moreover, a much wider bandwidth of the isolation was also obtained than that of return loss of 10 dB. In addition, a gain improvement of 0.95 dB was achieved at 2.45 GHz by utilizing the novel ADS. Thus, the decoupling structure can be applied to multiple-input multiple-output (MIMO) systems for its simple structure and high isolation providing.
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Citation
Zicheng Niu, Hou Zhang, Qiang Chen, and Tao Zhong, "Isolation Enhancement Using a Novel Array-Antenna Decoupling Surface for Microstrip Antennas," Progress In Electromagnetics Research M, Vol. 72, 49-59, 2018.
doi:10.2528/PIERM18070502
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