Circular Microstrip Patch Antenna with U-slots for multi band application

In this research work a Circular Microstrip Patch Antenna designed and the circular patch of the antenna slotted with U-slots, that enabled it to generate five resonant bands for penta band application. The antenna had exited using coxial probe with proper probe position. From IGHz to 5GHz frequency range over which the designed antenna had been investigated and within this frequency range the antenna generated multiple resonant bands with center frequencyl.02GHz, 1.66GHz, 2.55GHz, 3.7GHz and 4.93GHz. HFSS commercial software used to simulate the above said antenna for evolution of input impedance, Sn, Gain and Radiation Pattern.