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Ultrawideband high‐gain dual‐polarized antenna with anti‐interference capability
Author(s) -
Le Tuan Tu,
Tran Huy Hung
Publication year - 2019
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21814
Subject(s) - broadside , optics , antenna gain , radiator (engine cooling) , bandwidth (computing) , radiation , multi band device , dipole antenna , reflector (photography) , antenna (radio) , physics , bent molecular geometry , interference (communication) , high gain antenna , optoelectronics , antenna efficiency , electrical engineering , materials science , engineering , telecommunications , light source , channel (broadcasting) , composite material
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 0.69 λ L × 0.69 λ L × 0.16 λ L ( λ L 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.