Design and Analysis of a 2x1 Circular Patch MIMO Antenna with Defected Ground Structure for WiMAX in UWB Applications

In the present research, 2×1 circular patch MIMO antennas with a DGS are designed and analyzed for WiMAX applications in the Ultra-Wideband system. The suggested antenna is found to have much higher radiation efficiency and isolation bandwidth. Simulations conducted in HFSS have demonstrated a notable improvement in the antenna's overall performance, mutual coupling, and return loss. Through the UWB band of 3.1-10.6 GHz, the antenna exhibits a return loss (S11) of less than -10 dB and an isolation (S21) of less than -20 dB. With an efficiency above 85% and a peak gain of 5.8 dBi, the radiation patterns are omnidirectional. The DGS is appropriate for contemporary wireless communication systems that will need ultra-high data rates and great dependability because it effectively reduced mutual coupling and increased impedance bandwidth. This antenna operates between 3.3 and 3.6 GHz and between 5.3 and 5.5 GHz.