Abstract
In this article the design of a Plano-Concave patch antenna has been explored and reported. The effect of substrate material which include the dielectric with a specific dielectric constant has been analysed. Proposed shape of the patch is designed by subtracting a semi-circular patch from the conventional square patch .To analyse the effect of dielectric material on the performance of antenna, different materials with specific dielectric constant ( εr) like Silicon ( εr=11.7 ), Alumina92_pct( εr=9.2 ), FR4 Epoxy ( εr=4.4 ), RT Duroid ( εr=2.2) have been considered . The performance is considered for 5G LMDS application that includes 26.5 GHz to 29.5 GHz. The analysis has been done by considering the S-Parameter (Return loss <-10 dB), Antenna Gain, Directivity, Radiation Efficiency and surface current distribution. Table 1 provides the comparison of parameters for different substrate material.
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