Design and Performance of a Compact Broadband Circularly Polarized Rectangular Ring Antenna

Abstract

This paper presents the design and performance of a compact broadband circularly polarized CPW feed rectangular ring antenna. This antenna is simulated and fabricated on a glass epoxy FR4 substrate with a thickness of 1.6 mm and relative permittivity of 4.4 and loss tangent of .025. By introducing a square slot in the centre of the patch an impedance bandwidth nearly 10.3 GHz is achieved. The presented antenna has been designed, simulated and measured successfully. The simulation analysis of designed antenna is carried out using HFSS software and measurements are performed using Vector network analyzer. The obtained results with this antenna make it a suitable antenna for UWB systems and portable applications.