CPW-fed tetra band circular polarized antenna for wireless communication applications

Abstract

A novel design concept for a versatile multi-functional Circular polarized (CP) coplanar waveguide (CPW)-fed with two asymmetric U-shaped strips printed antenna is described in this paper. The antenna consists of a radiating patch which is composed of a hexagonal-ring linked by two annular ring over two corner which gives CP. Opposite side of the substrate two metallic closed ring resonators (CRRs) for ultra-wide band application. The proposed antenna design yields a wide band impedance bandwidth (IBW) ranging 2.58 GHz to 12.49 GHz. Furthermore, the simulated 3dB axial ratio (AR) band widths for tetra band are 633.9 MHz, 152.8 MHz, 433.4MHz and 172 MHz resonating at 6.75GHz, 8.29GHz, 9.35GHz and 11.53GHz respectively. The radiation characteristics of the implemented antenna are also presented and discussed.