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International Journal of Antennas and Propagation
Volume 2016, Article ID 8210781, 9 pages
http://dx.doi.org/10.1155/2016/8210781
Research Article

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

Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, China

Received 18 October 2015; Revised 10 December 2015; Accepted 24 December 2015

Academic Editor: Ikmo Park

Copyright © 2016 Deqiang Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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