U-Slotted Wideband Microstrip Patch Antenna for Ka Band and mmW 5G Applications

5G stands for 5th generation network. It allows to connect people, machines, objects, etc. this paper will be talking about the design of a simple rectangular microstrip patch antenna for Ka bands and mmW applications at 35 GHz as operating frequency with dimensions 4.4 × 3.05 mm² and we got after simulation some parameters such as bandwidth equals to 4 GHz, 5.3 dB as Gain, 6.5 dB as Directivity, 1.9 as VSWR (Voltage Standing Wave Ratio). Then, we have tried to improve those parameters by doing another design known as U slot antenna and we have achieved, bandwidth equals to 3 GHz, 6.08 dB as Gain, 7.16 dB as Directivity, 1.3 as VSWR. The proposed antenna has been made using FR4 material for substrate and has successfully improved the values of parameters because efficiency is 85% and is suitable for 5G applications.