In this paper, a 3.5 GHz microstrip patch antenna for the future of wireless communication is designed and studied. As the substrate material, Rogers RT/Duroid 5880 is utilized. This material has a thickness of 0.077 mm and a dielectric permittivity of 2.2. The proposed antenna layout is simulated using the CST Studio suite of software programs. This research aimed to get a lower return loss, a higher gain, a lower VSWR, better directivity, and more efficient operation. The simulation revealed that the return loss, gain, VSWR, and directivity were correspondingly -13.772 dB, 7.55 dB, 1.5152, and 8.43 dBi. The efficiency was 89.56%. This antenna has been designed and tested in various wireless communication applications. It has an operating frequency of 3.5 GHz. It is used as a reference antenna in communication satellites, weather radar, surface ship radar, wireless LANs (802.11b and 802.11g), multimedia applications in mobile TV and satellite radio, optical communications at 1460 to 1530 nm wavelength, and other wireless fidelity applications.