A Wideband Differentially Fed Dual-Polarized Antenna with Stable Radiation Pattern for Base Stations

A new wideband differentially fed dual-polarized antenna with stable radiation pattern for base stations is proposed and studied. A cross-shaped feeding structure is specially designed to fit the differentially fed scheme and four parasitic loop elements are employed to achieve a wide impedance band...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2017-05, Vol.65 (5), p.2248-2255
Main Authors: Wen, Ding-Liang, Zheng, Dong-Ze, Chu, Qing-Xin
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Bandwidth
Base station antenna
Base stations
Broadband antennas
differentially fed antenna
dual-polarization
Impedance
Resonant frequency
stable radiation pattern
wideband antenna
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Summary:A new wideband differentially fed dual-polarized antenna with stable radiation pattern for base stations is proposed and studied. A cross-shaped feeding structure is specially designed to fit the differentially fed scheme and four parasitic loop elements are employed to achieve a wide impedance bandwidth. A stable antenna gain and a stable radiation pattern are realized by using a rectangular cavity-shaped reflector instead of a planar one. A detailed parametric study was performed to optimize the antenna's performances. After that, a prototype was fabricated and tested. Measured results show that the antenna achieves a wide impedance bandwidth of 52% with differential standing-wave ratio
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2017.2679762