A novel millimeter-wave dual-band circularly polarized dielectric resonator antenna

被引:8
作者
Liu, Yiting [1 ]
Jiao, Yong-Chang [1 ]
Weng, Zibin [1 ]
Zhang, Chi [1 ]
Chen, Guantao [1 ]
机构
[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Shaanxi, Peoples R China
关键词
circular polarization; dielectric resonator antenna; dual-band; millimeter wave; FEED;
D O I
10.1002/mmce.21871
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
In this article, a novel dual-band circularly polarized (CP) dielectric resonator antenna (DRA) for millimeter-wave (MMW) band is presented. The rectangular dielectric resonator with layered truncated corners is excited by a microstrip-coupled cross-slot. CP radiations in the lower band are realized by utilizing two quasi-TE111 modes operating at 21.7 GHz and 23.8 GHz, while CP radiations in the upper band are obtained by exciting a quasi-TE113 mode at 28.2 GHz. The dual-band DRA is fabricated and measured. Due to the higher order mode, the average gain of the DRA in the upper band is about 3 dB higher than that in the lower band. The measured impedance bandwidths (|S-11| < -10 dB) are 17.0% (20.5-24.3 GHz) and 15.2% (26.1-30.4 GHz), while the measured axial ratio (AR) bandwidths (AR < 3 dB) are 12.8% (21.2-24.1 GHz) and 5% (27.4-28.8 GHz). In addition, the peak gain values are 5 and 8 dBic.
引用
收藏
页数:7
相关论文
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