Design of dual band dual circular slot antenna for IEEE 802.16 and comparison of the gain with the circular cut antenna

A dual band dual circular slot antenna was designed, simulated and compared with circular slot cut antenna. The antenna was designed by using flame retardant (FR4) substrate material with the substrate thickness of 1.6mm. The size of the antenna was 30*34*1.6 mm. The performance was analyzed by using HFSS software. The G Power statistical tool was used to find out the sample size. The proposed antenna has a gain of -12.7107dB and -10.3799 at the frequency of 0.8 GHz and 4.0 GHZ and the voltage standing wave ratio (VSWR) was 0.8. The Obtained insignificant value (p>0.05) was obtained. The simulated results show that there was a better improvement in return loss and VSWR.