Abstract
In this research work an investigation on compactness, bandwidth and gain of a circular microstrip patch antenna is presented. Five different microstrip patch antenna is designed using FR4 substrate with dielectric constant 4.4 and 1.6 mm thick. The frequency band, antenna gain and compactness are enhanced by introducing open ended slot on the radiating patch. The results of the antennas are presented maximum 0.8, 1.34, 0.7, 3.20 and 1.78 GHz frequency band with 45%, 57%, 46% and 86.5% compactness. The maximum simulated stable peak gain 2.3, 2.55, 3.2, 3, and 3.25 dBi is achieved. The measured percentage bandwidth of 22% (8.1–10.07 GHz) is achieved All the designed antennas are simulated by MOM base Ansoft designer software.
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