EBG Structures for Reduction of Mutual Coupling in Patch Antennas Arrays

Published online: Mar 28, 2017
Full Text: PDF (1.38 MiB)
DOI: 10.24138/jcomss.v13i1.242
Authors:
F. Benykhlef, N. Boukli-Hacene

Abstract

An important issue in antenna array design is reduction of mutual coupling. In square microstrip antennas this reduction can be achieved by using electromagnetic band-gap (EBG) structures. They can help in the reduction of mutual coupling by using their capability of suppressing surface waves propagation in a given frequency range. In this paper, we analyze the isolation properties of different EBG structures are compare them in antennas arrays by simulations. A new configuration of a planar compact electromagnetic bandgap structure is investigated. Compared to the conventional EBG (mushroom structure), a size reduction of 67.2% is achieved. Simulation results show that a significant value of mutual coupling reduction, more than 6 dB, can be obtained by using the proposed structure.

Keywords

Electromagnetic-bandgap (EBG), mutual coupling, structures, microstrip antenna arrays, surface wave
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