Dual‐band horizontally/dual‐polarized antennas for WiFi/WLAN/ISM applications. Issue 3 (19th November 2019)

• Record Type: Journal Article
• Authors: Gong, Qing; Xiao, Meizhen; Luo, Peng; Cui, Yuehui
• Is Part Of: Microwave and optical technology letters. Volume 62:Issue 3(2020:Mar.)
• Page Start: 1398
• Page End: 1408
• Publication Date: 2019-11-19
• Subjects: dual polarization -- dual‐band antenna -- horizontal polarization -- omni‐directional antenna; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.32162
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: A dual‐band horizontally polarized (HP) antenna with omnidirectional radiation patterns is presented in this paper. The HP antenna is a vertical slot backed with a metal box, which is excited by a tapered feeding patch with a U‐slit for dual‐band operation. Good omnidirectional radiations are observed. A dual‐band dual‐polarized (DP) antenna is then developed by adding a dual‐band vertically polarized (VP) element to the HP element. The VP element is composed of two horizontal slots excited by a two‐branch feedline. The dual‐band DP antenna achieves an overlapped impedance bandwidth of 6% (2.34‐2.5 GHz) for the lower band and 15% (5.06‐5.91 GHz) for the upper band with an isolation of higher than 35 dB. Both the dual‐band HP and DP antennas are suitable to serve as WiFi/WLAN/ISM antennas for short‐range, low power wireless communications.