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Gain Enhancement in Microstrip Antenna using Super Conducting Layer for C-Band Applications

In this paper, an aperture coupled fed microstrip patch antenna (ACMPA) with a upper conducting surface is proposed. The conventional ACMPA is designed to resonate at 4.37GHz frequency with broadside radiations with a peak gain of 5.5dBi. The gain is enhanced by 3.5dBi by placing the conducting metallic patch above the patch with air gap of λ/4 distance and the total gain of 9dBi is achieved. A prototype has been fabricated using commercially available low-loss dielectric material FR4 (glass epoxy) with dielectric constant (εr) = 4.4 and experimental validation of predicted simulation results is under process.