Journal of Microwaves, Optoelectronics and Electromagnetic Applications (Mar 2020)

Mutual Coupling Reduction in Phased Array Antennas Applying High-Impedance Surface at X Band

  • José Bruno O. de Araújo,
  • Vanessa P. R. Magri Souza,
  • Tadeu N. Ferreira,
  • Leni J. de Matos,
  • Glaucio L. Siqueira,
  • Jorge M. Souza,
  • Maurício W. B. da Silva

DOI
https://doi.org/10.1590/2179-10742020v19i11773
Journal volume & issue
Vol. 19, no. 1
pp. 118 – 128

Abstract

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Abstract This paper presents a microstrip phased array using High Impedance Surface - Electromagnetic Bandgap (HIS-EBG) in order to minimize the effects of mutual coupling among the antenna elements. Each element of the array is fed by a coaxial cable allowing the beam steering by controlling the signal of the input port of each element. This phased array operates at X Band as well as the bandgap of the HIS-EBG structure. Its main applications are satellite communication and broadcasting systems. Results show reductions in the mutual coupling up to 12 dB, and improvements in the return loss and gain.

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