Performance of Microstrip Antenna of Different Substrates and Geometries for S-Band

In this paper, many techniques are suggested and analyses for rectangular microstrip antenna (RMSA) operating in S-band for 3 GHz as center frequency. Using transmission-line model, analysis was done for the behavior of the antenna for different types of substrates, modified patch geometries and shifted feeding point, operating at S-band (2 to 4GHz). This design of RMSA is made to several dielectric materials, and the selection is based upon which material gives a better antenna performance with reduced surface wave loss. Glass PTFE and Duroid 5880 are the best materials for proposed design to achieve an enhanced Bandwidth (BW) and better mechanical characteristics than using air. These results are simulated using Feko EM solution software version 6.0. Keywords— Microstrip antenna, Feko EM solution, Input impedance, Quarts, VSWR, Glass PTFE.