ANALYSIS OF A BROAD-BAND HEMISPHERICAL DIELECTRIC RESONATOR ANTENNA WITH A DIELECTRIC COATING

被引：22
|
作者：
WONG, KL
CHEN, NC
机构：
[1] Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 1994年 / 7卷 / 02期
关键词：
DIELECTRIC RESONATOR ANTENNA; DIELECTRIC COATING;
D O I：
10.1002/mop.4650070213
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 probe-fed hemispherical dielectric resonator antenna with a dielectric coating is investigated rigorously by using a Green's function formulation. Numerical results for the input impedance at TE111 mode are calculated. It is found that, by coating the dielectric resonator antenna with a dielectric material having a relative permittivity about half that of the dielectric resonator antenna, the impedance bandwidth of the antenna can be significantly improved. This dielectric coating here serves as a transition region between the wave inside the dielectric resonator antenna and the free-space wave, and thus can increase the impedance bandwidth of the antenna. A broadband dielectric resonator antenna can thus be obtained. (C) 1994 John Wiley & Sons, Inc.
引用
收藏
页码：73 / 76
页数：4
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