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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2014-08-21
A Compact Microstrip Patch Antenna with Reconfigurable Feed Network for Polarization Diversity
By
Chun-Xia Cheng,

    Dr. Chun-Xia Cheng

    National Key Laboratory of Antennas and Microwave Technology

    Xidian University

    China

    Homepage

Fu-Shun Zhang,

    Dr. Fu-Shun Zhang

    Xidian University

    China

    Homepage

Ya-Li Yao

    Dr. Ya-Li Yao

    School of Electronic Engineering

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 48, 67-73, 2014
doi:10.2528/PIERL14071401 | Google Scholar

Abstract
A compact reconfigurable four-feeding microstrip antenna with polarization diversity is presented in this paper. With four triangle-shaped elements as the radiation patch, the proposed antenna can achieve good impedance match for linear polarization (LP), left hand circular polarization (LHCP) and right hand circular polarization (RHCP). A four-way power divider made by three Wilkinson power dividers and interconnected with PIN diodes is designed to feed the four elements. By controlling the states of the diodes, the antenna can produce LP, LHCP and RHCP. By using T-shaped slots on the patch and back to back geometry, a compact size of 0.6λ0× 0.6λ0×0.02λ0 is achieved. The impedance bandwidth of LP is about 80 MHz (3.3%), while the usable bandwidths (overlap of impedance bandwidth and AR bandwidth) of LHCP and RHCP are about 370 MHz (15%) and 250 MHz (10%). The average gain for LP is -2.1 dBi, and that for CP is -3.3 dBi. This reconfigurable patch antenna with switchable polarization has good performance and simple structure, which can be used for 2.4 GHz wireless communication systems.
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Citation
Chun-Xia Cheng, Fu-Shun Zhang, and Ya-Li Yao, "A Compact Microstrip Patch Antenna with Reconfigurable Feed Network for Polarization Diversity," Progress In Electromagnetics Research Letters, Vol. 48, 67-73, 2014.
doi:10.2528/PIERL14071401
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