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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-03-17
A Wideband Transmitarray Using Double-Petal Loop Elements
By
Chao Tian,

    Dr. Chao Tian

    National Key Laboratory of Antenna and Microwave Technology

    Xidian University

    China

    Homepage

Yong-Chang Jiao,

    Dr. Yong-Chang Jiao

    Xidian University

    China

    Homepage

Gang Zhao

    Dr. Gang Zhao

    National Laboratory of Science and Technology on Antennas and Microwaves

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 59, 57-62, 2016
doi:10.2528/PIERL16012801 | Google Scholar

Abstract
In this letter, a four-layer transmitarray operating at 9.5 GHz is designed using a double-petal loop element as the unit cell. A configuration of the double-petal loop elements is used to increase transmission phase variation while maintaining a wide transmission magnitude bandwidth of the unit cell, and a full transmission phase range of 360° is achieved for a transmission magnitude equals to or better than -2.4 dB. Furthermore, the oblique performance of the unit cell is also good. Then, a prime-focus 676-element microstrip transmitarray with the proposed element is fabricated and measured. The highest measured gain is about 22.15 dBi at 9.8 GHz, resulting in a 31% aperture efficiency. The antenna bandwidth of 10.2% (from 9.3 to 10.3 GHz) for 1 dB-gain is achieved in this design.
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Citation
Chao Tian, Yong-Chang Jiao, and Gang Zhao, "A Wideband Transmitarray Using Double-Petal Loop Elements," Progress In Electromagnetics Research Letters, Vol. 59, 57-62, 2016.
doi:10.2528/PIERL16012801
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