Mutual Coupling Reduction in Phased Array Antennas Applying High-Impedance Surface at X Band
Keywords:electromagnetic band-gap, metamaterial, microstrip, phased array
AbstractThis paper presents a microstrip phased array using High Impedance Surface - Electromagnetic Band Gap (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 band-gap 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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