Open AccessDual‐polarised high‐gain triple‐band differential antenna for WLAN and Sub‐6 GHz 5G applications
Author(s) -
Jin Guiping,
Zeng Guangjie,
Yang Ju,
Xu Yechun,
Liao Shaowei
Publication year - 2020
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2019.0566
Subject(s) - antenna (radio) , multi band device , directivity , physics , frequency band , antenna gain , radio spectrum , optics , dipole antenna , telecommunications , antenna factor , computer science
A new dual‐polarised high‐gain triple‐band differential‐fed antenna is proposed in this study. The antenna adopts a differential feeding scheme, in which a high‐frequency radiator for 3.5 GHz Sub‐6 GHz 5G band and 5 GHz WLAN band, and two pairs of low‐frequency radiators for 2.45 GHz WLAN band are effectively combined to obtain multiband operation. To filter out unwanted frequency band, four half‐wavelength slots are introduced to generate a notch band between 3.8 and 4.8 GHz. Experimental results show that the proposed antenna achieves 10‐dB impedance bandwidths of 2.37–2.61 GHz for the low‐frequency band, 3.27–3.76 GHz for the intermediate frequency band, and 4.87–5.98 GHz for the high‐frequency band. The gains of the antenna are all above 8.0 dBi for all the three bands. The antenna exhibits a good directivity and low cross‐polarisation level (below −20 dB); thus it is a good candidate for WLAN and Sub‐6 GHz 5G wireless access point systems.