2019-07-30
Design and Analysis of a Broadband High Isolation Dual-Polarized Omnidirectional Antenna
By
Progress In Electromagnetics Research B, Vol. 85, 65-83, 2019
Abstract
A high isolation broadband dual-polarized omnidirectional antenna comprising two low profile orthogonally polarized omnidirectional radiating elements is presented. A modified monopole using loadings to broaden impedance bandwidth is applied to vertical polarization (VP), while four printed concentrically arranged Yagi-Uda-like antennas are employed for horizontal polarization (HP). Both the simulated and measured results indicate that the operating bands of the proposed antenna with its reflection coefficient less than -10 dB are 1.48 to 3.16 GHz for VP and 1.69 to 2.7 GHz for HP. A good port isolation larger than 40 dB and omnidirectional patterns with the out-of-roundness less than 2 dB in horizontal plane are obtained. This paper explains the radiation mechanism by investigating the simulated surface current distributions for VP element and establishing a radiation model for HP element, and also analyzes the performance of the proposed antenna. This antenna design can be applied to 4G (LTE) communication system.
Citation
Yuwei Zhang, Shu Lin, Shang Yu, Shoulan Liu, Guanjun Liu, and Alexander Denisov, "Design and Analysis of a Broadband High Isolation Dual-Polarized Omnidirectional Antenna," Progress In Electromagnetics Research B, Vol. 85, 65-83, 2019.
doi:10.2528/PIERB19051303
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