Omnidirectional Linearly and Circularly Polarized Rectangular Dielectric Resonator Antennas

被引：95
|
作者：
Pan, Yong Mei [1 ,2 ]
Leung, Kwok Wa [1 ,2 ]
Lu, Kai [1 ,2 ]
机构：
[1] City Univ Hong Kong, State Key Lab Millimeter Waves, Hong Kong, Hong Kong, Peoples R China
[2] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2012年 / 60卷 / 02期
关键词：
Circular polarization (CP); dielectric resonator antenna (DRA); omnidirectional antenna; slot; TM mode; PATCH ANTENNA; CONICAL-BEAM; WAVE-GUIDE; BAND;
D O I：
10.1109/TAP.2011.2173122
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：
The rectangular dielectric resonator antenna (DRA) centrally fed by a probe is investigated. Its operating mode is analogous to the TM011 mode of a cylindrical DRA. The DRA radiates like an electric monopole, generating omnidirectional linearly polarized (LP) fields. Based on this LP design, a novel omnidirectional circularly polarized (CP) DRA is studied for the first time. Slots are introduced to the sidewalls of the DRA, exciting a degenerate mode for the generation of CP fields. To demonstrate the idea, an omnidirectional CP DRA was designed for WLAN (2.4-2.48 GHz) applications. The reflection coefficient, axial ratio (AR), radiation pattern, and antenna gain are studied, and reasonable agreement between the measured and simulated results is observed.
引用
收藏
页码：751 / 759
页数：9
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