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PIER PIER B PIER C PIER M PIER Letters
2013-04-17
A Wideband Twin-Diamond-Shaped Circularly Polarized Patch Antenna with Gap-Coupled Feed
By
Xuehui Li,

    Dr. Xuehui Li

    National Laboratory of Science and Technology on Antennas and Microwaves

    Xidian University

    China

    Homepage

Xueshi Ren,

    Dr. Xueshi Ren

    School of Engineering and Digital Arts

    University of Kent

    United Kingdom

    Homepage

Ying-Zeng Yin,

    Professor Ying-Zeng Yin

    Xidian University

    China

    Homepage

Lu Chen,

    Dr. Lu Chen

    National Laboratory of Science and Technology on Antennas and Microwaves

    Xidian University

    China

    Homepage

Zedong Wang

    Dr. Zedong Wang

    National Laboratory of Science and Technology on Antennas and Microwaves

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research, Vol. 139, 15-24, 2013
doi:10.2528/PIER13030301
Abstract
A novel twin-diamond-shaped antenna is presented for wideband circularly polarized (CP) radiation. By introducing a twin-diamond-shaped patch and a gap-coupled feed structure, a left-handed circularly polarized (LHCP) antenna in bore-sight direction is obtained. The gap-coupled feed structure consists of a horizontal microstrip arm of approximately 0.285λ0 at the centre frequency and two small diamonds, which greatly contributes to wideband characteristics. The experimental bandwidths of 10-dB return loss and 3-dB axial ratio (AR) for the antenna prototype are about 20% and 9.2%, respectively. The measured gain is more than 6.8 dBi over the entire bandwidth.
Citation
Xuehui Li, Xueshi Ren, Ying-Zeng Yin, Lu Chen, and Zedong Wang, "A Wideband Twin-Diamond-Shaped Circularly Polarized Patch Antenna with Gap-Coupled Feed," Progress In Electromagnetics Research, Vol. 139, 15-24, 2013.
doi:10.2528/PIER13030301
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