Wideband Omnidirectional Slotted Patch Antenna With Filtering Response

Tian Li Wu; Yong Mei Pan; Peng Fei Hu

doi:10.1109/ACCESS.2017.2768067

IEEE Access (Jan 2017)

Wideband Omnidirectional Slotted Patch Antenna With Filtering Response

Tian Li Wu,
Yong Mei Pan,
Peng Fei Hu

Affiliations

Tian Li Wu: School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Yong Mei Pan: ORCiD; School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Peng Fei Hu: School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China

DOI: https://doi.org/10.1109/ACCESS.2017.2768067
Journal volume & issue: Vol. 5
pp. 26015 – 26021

Abstract

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A wideband omnidirectional patch antenna with filtering response is investigated in this paper. The circular patch antenna is centrally fed by a probe, with its TM01, TM02, and TM03 modes simultaneously excited. Two ring slots are meticulously introduced into the patch and ground plane to merge the three modes of a kind, realizing a wide omnidirectionally radiating passband. The introduction of the slots also generates two radiation minimums at the lower and upper band-edges, leading to an enhanced suppression level in the stopbands. Hence, a compact wideband filtering patch antenna with quasi-elliptic bandpass response is obtained, without using any extra circuit. The proposed antenna has a low profile of 0.027 λ0, a 10-dB impedance bandwidth of 19.5%, an average gain of 7.5 dBi within passband, and an out-of-band suppression level of over 23 dB within stopband.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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