Microstrip patch antenna has become more popular recently because of its easy analysis, fabrication, low cost, lightweight, and attractive radiation characteristics. Although a patch antenna has numerous advantages, it also has some drawbacks such as narrow bandwidth, low gain, and a potential decrease and distortion in the radiation pattern. This paper presents the design, simulation, and analysis of rectangular and circular microstrip patch antennas. It discusses antennas' performances based on return loss, reflection coefficient at the input port, bandwidth, 3D radiation pattern, and front-to-back ratio. Designed on an FR-4 substrate of thickness 0.7 mm and relative permittivity (ε r ) of 10, and fed by a 50 Ω microstrip feed line, the antennas are designed to resonate at 1.8GHz. The rectangular patch antenna achieved a bandwidth of 0.17GHz and a gain of 6.37dBi. At the same time, the circular patch antenna exhibits a bandwidth of 0.16GHz and again of 6.53dBi. A comparison of the antenna performances indicates that the rectangular antenna has more bandwidth than the circular antenna. While circular has better gain than rectangular; thus, good matching is better achieved in the circular. Therefore, the antennas can be a good candidate for fixed Point-to-Point link applications.
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