Circularly polarized dielectric resonator antenna excited by a shorted annular slot with a backing cavity

被引：26
|
作者：
Leung, KW [1 ]
机构：
[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 10期
关键词：
circular polarization; dielectric resonator antenna; method of moments (MoM);
D O I：
10.1109/TAP.2004.834445
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：
Excitation of the circularly polarized dielectric resonator antenna (DRA) using a shorted annular slot is studied in this paper. The new method is demonstrated using a hemispherical DRA. The exact DRA Green's function is used in the formulation, and the method of moments is employed to solve for the equivalent magnetic current in the slot. The input impedance, axial ratio, and field patterns are found. Measurements were carried out to verify the calculations, with good results. The effects of the radius and shorting width of the slot are investigated, and the design procedure of the CP DRA is discussed.
引用
收藏
页码：2765 / 2769
页数：5
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