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International Journal of Antennas and Propagation
Volume 2016, Article ID 9674742, 5 pages
http://dx.doi.org/10.1155/2016/9674742
Research Article

High Gain Slot Array with Fabry-Perot Cavity Feeding Circuit

1Ecole Polytechnique de Montréal, 2500 Ch. de Polytechnique, Montréal, QC, Canada H3T 1J4
2Université du Québec en Abitibi-Témiscamingue, Val-d’Or, QC, Canada J9P 1Y3

Received 11 January 2016; Accepted 13 June 2016

Academic Editor: Paolo Burghignoli

Copyright © 2016 Halim Boutayeb and Mourad Nedil. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new approach for designing slot arrays using a Fabry-Perot cavity for the feeding circuit is presented. The proposed array has simpler and smaller feeding circuit compared to conventional feeding networks that have multiple dividers or combiners. The dividers and combiners are usually sources of losses. In addition, the profile of the proposed array is not limited by the half-wavelength resonance condition that exists for Fabry-Perot resonator antennas based on partially reflecting surfaces. The operating frequency is not sensitive to the profile of the antenna. A small profile can be achieved without the utilization of an artificial magnetic conductor or a substrate with high dielectric constant. To validate the proposed approach, full-wave numerical results are presented at 5.8 GHz showing good impedance matching, a high gain of about 22 dB, and an efficiency of 76%.