Vol. 104

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2022-06-14

A Low-Profile Dual-Band Dual-Polarized Dipole Antenna for 5G Communication Applications

By Shiqiang Fu, Xuehao Zhao, Chanjuan Li, and Zhongbao Wang
Progress In Electromagnetics Research Letters, Vol. 104, 131-137, 2022
doi:10.2528/PIERL22051005

Abstract

A dual-band dual-polarized dipole antenna with an artificial magnetic conductor (AMC) reflector is proposed, which can be applied in 5G base stations. The antenna consists of a pair of ±45° crossed dipoles and a wideband AMC reflector. By adopting arrow-shaped dipoles and introducing slots, dual-band characteristic is achieved. The AMC is designed to operate with 90° reflection-phase bandwidth of 2.1-3.9 GHz (30%). Compared with using traditional reflector, the profile height can be reduced from 0.25λ0 to 0.11λ0 (where λ0 is the free-space wavelength at 2.6 GHz). The measurement results show that the impedance bandwidth with |S11| < -14 dB is about 15.5% (2.44-2.85 GHz) and 18.6% (3.17-3.82 GHz), covering the Sub-6 GHz bands. The average gain is 8.5 dBi in the lower band and 8.2 dBi in the upper band. At 2.6 GHz and 3.45 GHz, the half-power beamwidth of the antenna is 77° and 80°, respectively. In the two bands, the port isolation of the antenna is more than 28 dB, and the cross-polarization level is less than -20 dB.

Citation


Shiqiang Fu, Xuehao Zhao, Chanjuan Li, and Zhongbao Wang, "A Low-Profile Dual-Band Dual-Polarized Dipole Antenna for 5G Communication Applications," Progress In Electromagnetics Research Letters, Vol. 104, 131-137, 2022.
doi:10.2528/PIERL22051005
http://www.jpier.org/PIERL/pier.php?paper=22051005

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