Analysis of Half Circular F Slot Multiband Microstrip Antenna with Defected Ground Structure

A half circular F slot multiband microstrip patch antenna (MSA) with defected ground structure (DGS) presented through this paper. The dimension of proposed antenna is 39.6 × 24.6 × 1.6 mm 3 for two different substrate materials (Fr-4 andTeflon). The performance analysis of proposed antenna characteristics such as return loss, VSWR and radiation pattern has simulated using ANSoft HFSS. This antenna has resonated at frequencies 3.4 GHz, 6GHz and 8.25 GHz with impedance bandwidth 2.35%,2.58% and 3.15% respectively lies in S, C and X band for Teflon base substrate, and resonated at frequencies 2.5 GHz, 4.45 GHz, 5.15 GHz and 6.15 GHz operated with impedance bandwidth3.2%, 4.26%, 2.52% and 3.98% in S and C bands respectively for Fr-4 substrate.