Wideband Diversity Cylindrical Dielectric Resonator Antenna Based on Multimode Resonance

被引:12
作者
Yang, Tian [1 ]
Ren, Jian [2 ]
Zhang, Bing [2 ]
Liu, Yan-Ting [1 ]
Ma, Tianye [3 ]
Yin, Yingzeng [2 ]
机构
[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Peoples R China
[2] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xidian 710071, Peoples R China
[3] Nanjing Res Inst Elect Technol, Sci & Technol Antenna & Microwave Lab, Nanjing 210008, Peoples R China
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 09期
基金
中国国家自然科学基金;
关键词
Dielectric resonator antenna (DRA); fundamental mode; higher-order mode; pattern diversity; wideband antenna; PATCH ANTENNA; DUAL-BAND;
D O I
10.1109/LAWP.2023.3281478
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
A wideband pattern-diversity cylindrical dielectric resonator antenna (DRA) with high isolation is proposed. Based on the equivalent medium principle and the presented DRA structure of wheel shape, the resonant frequency of the HEM11 delta mode is increased and combined with that of the HEM12 delta+1 mode to obtain a wide operation band, both of which are excited by a rectangular slot. In addition, the TM01 delta mode with wideband impedance matching is well excited by a probe in the presented antenna. The TM01 delta mode with omnidirectional pattern and the HEM11 delta and HEM12 delta+1 modes with an unidirectional pattern are utilized to obtain wideband pattern-diversity DRA. For verification, a prototype of the presented DRA was fabricated and measured. The measured overlapped impedance bandwidth is about 30% (3.08-4.16 GHz), and the port isolation is higher than 30 dB. Besides, the envelope correlation coefficient is very low.
引用
收藏
页码:2205 / 2209
页数:5
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