Symmetrical Dual Step Finite Partial Ground Notch Truncated RMSA for Ultra Wideband Communication System Applications

Abstract

The designed antenna proposed in this paper for UWB wireless communication application is a simple dual symmetrical step finite partial ground notch truncated at the center rectangular microstrip antenna. The desired features of the proposed antennas are wide bandwidth, nearly omni directional radiation patterns, compact in size and simple geometry. Its operating frequency range is from 1.22 to 11.82 GHz with four resonant frequencies centered at 1.66 GHz, 6.51 GHz, 9.21 and 10.78 GHz of respective impedance BW of 162.57% with bandwidth ratio 6.48:1 which is more than the bandwidth ratio of 3.4:1 of UWB allotted by FCC. The overall printed circuit board dimensions are 23.3×24×21.3 mm³ designed on 50×50 mm²  modify epoxy substrate  of ϵ_r = 4.2 and thickness 1.6 mm. Study is analyzed using standard commercial electromagnetic simulation software Ansys HFSS. Vector Network Analyzer (VNA) is used to validate the simulation results. Very good agreement is observed in simulated and measured results. The antenna can be used for various indoor and outdoor positioning wireless communication applications.