A Circularly Polarized Antenna by Using Rotated-Stair Dielectric Resonator

被引：101

作者：

Wang, Kai Xu ^{[1
]}

Wong, Hang ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷

关键词：

Aperture coupled; circular polarization (CP); dielectric resonator antenna; rotated-stair DRA; wide bandwidth;

D O I：

10.1109/LAWP.2014.2385475

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, a wideband compact circularly polarized (CP) dielectric resonator antenna (DRA) is proposed. This antenna consists of two rectangular dielectric layers that are stacked with a rotation angle relative to its adjacent bottom layer. The antenna is excited by an aperture coupled through a slot cutting on the ground plane. The rotated-stair configuration of DRA contributes dual broadside CP radiating modes and results in a noticeable enhancement in the axial ratio (AR) bandwidth. The proposed antenna achieves 31% impedance bandwidth and 18.2% AR bandwidth. The average gain within the AR bandwidth is 4.5 dBi with less than 0.5-dB variation. Moreover, the proposed dielectric resonator antenna has a low-profile structure. This work demonstrates a CP bandwidth broadening technique for the DRA. The potential applications of the antenna are 5G Wi-Fi and satellite communication systems.

引用

页码：787 / 790

页数：4

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