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The rapid evolution of wireless communication technologies has driven the need for advanced antenna solutions, particularly for high-frequency bands such as those designated for 5G networks. In this study, a wideband microstrip antenna with a modified ground plane is designed, simulated, and implemented, optimized for high-gain performance in 5G applications. The circular microstrip patch antenna has a physical dimension of 50 x 34 mm and a radius of 16 mm. Design circular microstrip antenna is multi-band operational. The antenna's performance investigation was conducted through the use of High Frequency Structure Simulator (HFSS) software. According to the measurement results, the suggested circular antenna obtains a reflection coefficient (S11) of approximately -24.7475 dB, -44.8216 dB, and -40.3836 dB at 2.4GHz, 4.9GHz, and 6.3GHz, respectively, with a return loss better than -14 dB across the operational bands.
More et al. (Tue,) studied this question.