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OPTIMUM HIGH IMPEDANCE SURFACE CONFIGURATION FOR MUTUAL COUPLING REDUCTION IN SMALL ANTENNA ARRAYS

By N. Capet, C. Martel, J. Sokoloff, and O. Pascal

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Abstract:
In this paper, the electromagnetic properties of two different High Impedance Surfaces (HIS) with or without Electromagnetic Band Gap (EBG) in different configurations are investigated for mutual coupling reduction in small antenna arrays. The resonant mechanisms of these structures are studied using transmission calculations in a parallel plate waveguide. An optimum configuration is then proposed. It is shown that a good isolation performance can be achieved without the need of metallic vias when the structure is embedded in a metallic cavity, which limits significantly the number of HIS cells needed to perform a good isolation and the cost of manufacture.

Citation:
N. Capet, C. Martel, J. Sokoloff, and O. Pascal, "Optimum High Impedance Surface Configuration for Mutual Coupling Reduction in Small Antenna Arrays," Progress In Electromagnetics Research B, Vol. 32, 283-297, 2011.
doi:10.2528/PIERB11050506

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