Modification of 2.2 GHz S-Band Rectangular Patch Microstrip Antenna using Truncated Corner Method for Satellite Applications

This study aims to develop a rectangular patch microstrip antenna design that can work at a resonant frequency of 2.2 GHz to obtain circular polarization. The modification method used is truncated corner with a single microstrip feed channel, which cuts the patch's top and bottom edges as far as 45 degrees. The design and simulation of the microstrip rectangular patch antenna and the truncated corner antenna were carried out using Ansys HFSS v15 software, and the material used was FR4-Epoxy with a material thickness of h = 1.6 mm and a dielectric constant of 4.4. The simulation results of the two antennas' design can resonate well at a frequency of 2.2 GHz. The return loss of rectangular patch microstrip antenna is -28,377 dB, VSWR is 1.0778, bandwidth is ±150 MHz, and the axial ratio is 53.4022 with linear polarization. In comparison, the values of return loss, VSWR, bandwidth and the axial ratio of truncated corner antennas are -20.3793 dB, 1.2117, ± 150 MHz and 0.7934 dB with LHCP circular polarization, respectively