Broadband CPW-Fed Circularly Polarized Compact Planar Monopole Antenna with Half-Elliptical slot for C and X band Applications

Abstract

A new coplanar-waveguide (CPW)-fed monopole antenna with broad impedance bandwidth (IBW) and axial ratio bandwidth (ARBW) is presented. A half-elliptical slot and a rectangular slot with a compact size of 23 x 22 x 1.6 mm³ make up the planned structure. The design stages of the planned antenna are presented by optimizing the various design parameters using parametric analysis. It has a -10 dB IBW of about 71.74 percent from 4.38 GHz to 9.28 GHz, with a 46.19 percent ARBW from 5.71 GHz to 9.14 GHz. It is appropriate for wireless communication applications in the C- and X-bands and entirely covers the wireless locan area network (WLAN) band (5.725-5.85 GHz). The surface current distribution investigates the circular polarisation (CP) rotation process. The developed antenna has good gain and has steady radiation characteristics within the operational band. The antenna measured results are in perfect accordance with the simulations.