Development of a Broadband Substrate Integrated Waveguide Cavity Backed Slot Antenna Using Perturbation Technique

A novel method for bandwidth enhancement of Substrate Integrated Waveguide (SIW) cavity-backed slot antenna is introduced for a single element and an array configuration. Using a corner cut in the SIW square cavity, resonant frequency of two degenerate TE210 and TE120 modes of a square cavity are se...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2014-11, Vol.29 (11), p.847
Main Authors: Baghernia, Elham, Neshati, Mohammad H
Format: Article
Language:English
Subjects:
Antenna arrays
Bandwidths
Broadband
Perturbation methods
Resonant frequencies
Slot antennas
Substrate integrated waveguides
Weight reduction
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Summary:A novel method for bandwidth enhancement of Substrate Integrated Waveguide (SIW) cavity-backed slot antenna is introduced for a single element and an array configuration. Using a corner cut in the SIW square cavity, resonant frequency of two degenerate TE210 and TE120 modes of a square cavity are separated and impedance bandwidth is improved. The simulated and measured results of the antennas show at least 140% and 220% wider bandwidth compared to the bandwidth of a conventional single cavity antenna for single and two element array antennas, respectively. The presented antennas provide a few advantages including low profile, light weight, easy fabrication with low cost and convenient integration with planar circuits.
ISSN:1054-4887
1943-5711