Two‐port dielectric resonator antenna loaded with meta‐surface for improving isolation and circular polarization generator

Abstract

SummaryIn this communication, a dielectric resonator based dual‐port radiator is designed. Loading of meta‐surface over the dual‐port antenna creates two important features that make it unique to the proposed design: (i) conversion of the linear polarized plane waves into circularly polarized plane wave (ii) improve the isolation between the antenna port by more than 30 dB. Experimental measurement confirms that proposed design is working in the frequency range 5.14–5.55 GHz, and a 3‐dB axial ratio is produced from 5.36 to 5.45 GHz. Stable radiation pattern and good value of diversity performance are also achieved in the proposed radiator. All of these characteristics make the developed radiator appropriate for WLAN (5.4 GHz) applications.