Simulation of Microstrip Antenna and Compare its Return Loss by Varying Dielectric Substrates and Dimensions of Antenna

Abstract

Microstrip antennas with different substrates(FR4,Bakelite,RT Duroid) were designed at a frequency range of (2.4-3.1) GHz to optimize return loss and gain.:Gain and return loss of microstrip antenna with FR4 substrate( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{n}=8$</tex> ) is compared with microstrip antenna with bakelite substrate( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{n}=8$</tex> ) and microstrip antenna with Roger 5800 substrate <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(\mathbf{n}=8)$</tex> in frequency range of (2.4-3.1) GHz using the HFSS tool. Microstrip antenna with (FR4,bakelite,rogers 5800) substrates has significantly higher gain (3.4 dBi,6.02 dBi,7.2 dBi) (P!0.05) respectively. Microstrip antenna with FR4 substrate has less return loss (−23.804 dB), bakelite(−9.6428 dB) and Rogers 5800(−10.0328 dB). The optimal frequency for maximum gain was at 3.1 GHz and less return loss was at 2.7 GHz for microstrip antenna with FR4 substrate and for microstrip antenna with bakelite and Rogers 5800 has less return loss at 3.1 GHz. Within the limits of this study microstrip antenna with (FR4,bakelite,Rogers 5800) offers better enhancement of gain at 3.1 GHz and less return loss for microstrip antenna with FR4 substrate was at 2.7 GHz and for microstrip antenna with (bakelite,Rogers 5800) substrates has less return loss at 2.4 GHz.