volume | PIER Journals

2018-02-21

A Single-Feed Circularly Polarized Magnetoelectric Dipole Antenna for Wideband Wireless Applications

Chao-Qiang Feng,

Dr. Chao-Qiang Feng

Xidian University

China

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Fu-Shun Zhang,

Dr. Fu-Shun Zhang

Xidian University

China

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Han-Jing Zhang,

Dr. Han-Jing Zhang

Xidian University

China

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Jun-Xiu Su

Dr. Jun-Xiu Su

Xidian University

China

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Progress In Electromagnetics Research M, Vol. 65, 1-8, 2018

doi:10.2528/PIERM18010803

Abstract

A wideband circularly polarized magnetoelectric dipole antenna fed by a Γ-shaped structure is investigated. In the design, a pair of vertical plates connected to ground work as a magnetic dipole, while a pair of rotationally symmetric horizontal plates with strips bent downward work as an electric dipole. And four metallic plates are vertically added on edges of the ground, forming a cavity reflector with four gaps to improve the axial ratio (AR) bandwidth. Measurements show that the antenna has a wide impedance bandwidth of 102% from 1.35 GHz to 4.2 GHz for voltage standing wave ratio (VSWR) ≤ 2 and a 3-dB AR bandwidth of 79.7% from 1.6 GHz to 3.72 GHz, over which the antenna gain varies from 5.4 dBic to 10.6 dBic. Furthermore, the antenna exhibits right-hand circular polarization and has good unidirectional radiation characteristic. The proposed antenna can be applied to wideband wireless applications.

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Chao-Qiang Feng, Fu-Shun Zhang, Han-Jing Zhang, and Jun-Xiu Su, "A Single-Feed Circularly Polarized Magnetoelectric Dipole Antenna for Wideband Wireless Applications," Progress In Electromagnetics Research M, Vol. 65, 1-8, 2018.
doi:10.2528/PIERM18010803

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