Millimeter wave High Impedance Surfaces (HIS) based antennas are designed, fabricated, and characterized for high data rate communications at frequencies around 40GHz. HIS with difierent flnite surface area sizes are used as a ground plane for the microstrip patch antennas to suppress the surface waves. The antenna measurements and full wave electromagnetic simulations demonstrate a wide bandwidth of 12{15% in the frequency range of 38{44GHz with a high gain of »6dB and a very low cross polar contribution better than i20dB.
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Tran et al. (2010) studied this question.
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