A Single-Point-Fed Wideband Circularly Polarized Rectangular Dielectric Resonator Antenna

Abstract EN

A single-point-fed circularly polarized (CP) rectangular dielectric resonator antenna (DRA) with wide CP bandwidth is presented.

By using TE111 and TE113 modes of the rectangular DRA, a wideband CP performance is achieved.

The coupling slot of the antenna contains a resistor loaded monofilar-spiral-slot and four linear slots.

Design concept of the proposed antenna is demonstrated by simulations, and parameter studies are carried out.

Prototype of the proposed antenna was fabricated and measured.

Good agreement between the simulation and measurement is obtained.

The measured impedance bandwidth (|S11|<-10 dB) and 3 dB axial-ratio (AR) bandwidth are 51.4% (1.91–3.23 GHz) and 33.0% (2.15–3.00 GHz), respectively.