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High-gain dual-polarized antenna for ultrawideband applications

Authors: 

Huy H. Tran, Tuan T. Le*

Source title: 
International Journal of RF and Microwave Computer-Aided Engineering, 29(8): e21782, 2019 (ISI)
Academic year of acceptance: 
2019-2020
Abstract: 

In this article, a high‐gain and dual‐polarized antenna with UWB operation is proposed. The antenna is composed of two tapered dipoles as radiating elements, which are arranged orthogonally and fed perpendicularly to achieve polarization diversity. A metallic cavity reflector is placed behind the radiator for high gain radiation entire the operating bandwidth. To validate the design method, an antenna prototype is designed, fabricated, and measured. The measured results demonstrate that the proposed design has good performance with |S11| ≤ −10 dB and isolation ≥20 dB over a frequency band 3.2‐8.8 GHz, equivalently to about 93.3%. In addition, unidirectional radiation pattern and broadside gain of from 8.1 to 11.8 dBi are obtained across the operating bandwidth.