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Ultrawideband high-gain dual-polarized antenna with anti-interference capability

Authors: 

Tuan Tu Le, Huy Hung Tran

Source title: 
International Journal of RF and Microwave Computer-Aided Engineering, 29(9): e21814, 2019 (ISI)
Academic year of acceptance: 
2019-2020
Abstract: 

In this article, a high‐gain dual‐polarized antenna with band‐rejection capability for ultrawideband (UWB) applications is proposed. Tapered dipoles are chosen as a primary radiator to achieve UWB operation and it is reflected by a metallic cavity reflector for high gain radiation. A notch at WLAN band is realized by etching a set of four bent slots in the radiating elements. The measured results demonstrate that the proposed design with overall dimensions of 0.69λL × 0.69λL × 0.16λL (λL is free‐space wavelength at the lowest operating frequency) has operating bandwidth of 95.1% (3.2‐9.0 GHz) and the rejected frequency band from 5.0 to 5.9 GHz. Additionally, good unidirectional radiation patterns with a broadside gain from 8.1 to 11.5 dBi and radiation efficiency of better than 90% are also achieved.