Open AccessWideband Omnidirectional Slotted Patch Antenna With Filtering Response
Author(s) -
Tian Li Wu,
Yong Mei Pan,
Peng Fei Hu
Publication year - 2017
Publication title -
ieee access
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 127
ISSN - 2169-3536
DOI - 10.1109/access.2017.2768067
Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation
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.
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