ANALYSIS OF A BROAD-BAND SLOT-COUPLED DIELECTRIC-COATED HEMISPHERICAL DIELECTRIC RESONATOR ANTENNA

被引：28
|
作者：
CHEN, NC
SU, HC
WONG, KL
LEUNG, KW
机构：
[1] Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung
[2] Department of Electronic Engineering, City Polytechnic of Hong Kong, Kowloon
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 1995年 / 8卷 / 01期
关键词：
DIELECTRIC RESONATOR ANTENNA; DIELECTRIC COATING; SLOT COUPLING;
D O I：
10.1002/mop.4650080105
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：
Dielectric-coated hemispherical dielectric resonator (DR) antennas fed by a microstrip line through a coupling slot are analyzed. The broadside TE111 mode is studied, and the reciprocity theorem is applied in this analysis. In this case the dielectric-coated DR antenna can be viewed as a series load at the slot position as seen by the microstrip line. The impedance of this series load is calculated by using a Green's-function formulation, and the input impedance of the slot-coupled DR antenna can then be obtained using transmission-line theory. Numerical results for the input impedance are calculated and presented, and the antenna bandwidth is discussed. It is observed that the antenna bandwidth of a dielectric-coated DR antenna can be as high as two times that of a DR antenna without a coating. (C) 1995 John Wiley & Sons, Inc.
引用
收藏
页码：13 / 18
页数：6
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