A Low-Profile and High-Permittivity Dielectric Resonator Antenna With Enhanced Bandwidth

被引：19
|
作者：
Liu, Ying [1 ]
Liu, Hu [1 ]
Wei, Ming [1 ]
Gong, Shuxi [1 ]
机构：
[1] Xidian Univ, Sci & Technol Microwave Lab, Xian 710071, Shaanxi, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
基金：
中国国家自然科学基金;
关键词：
Bandwidth; dielectric resonator antenna; high permittivity; low profile; COAXIAL PROBE;
D O I：
10.1109/LAWP.2014.2385862
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 dielectric resonator antenna of very high permittivity has been proposed. The antenna is designed based on a multilayered structure. To realize low profile and relatively large impedance bandwidth simultaneously, two separate dielectric resonators of high permittivity are placed symmetrically on top of the antenna structure. A low-permittivity dielectric substrate is inserted between the resonators and the ground. The total height of the antenna is 1.57 mm or 0.039 lambda (lambda is the wavelength at the center frequency.) An enhanced bandwidth of 10.49% has been realized. The proposed antenna has stable radiation patterns across the whole operating band. Relatively high antenna gains over 6 dBi and a low cross-polarization level of -25 dB are also achieved.
引用
收藏
页码：791 / 794
页数：4
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