THEORY AND EXPERIMENT OF AN APERTURE-COUPLED HEMISPHERICAL DIELECTRIC RESONATOR ANTENNA

被引:92
作者
LEUNG, KW
LUK, KM
LAI, KYA
LIN, DY
机构
[1] CHINESE UNIV HONG KONG, DEPT ELECTR ENGN, SHA TIN, HONG KONG
[2] TSING HUA UNIV, DEPT ELECTR ENGN, BEIJING 100084, PEOPLES R CHINA
关键词
D O I
10.1109/8.475090
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 hemispherical dielectric resonator (DR) antenna using aperture coupling for excitation is studied both theoretically and experimentally, The reciprocity method is used to formulate the problem, The exact magnetic field Green's function due to the equivalent magnetic current in the slot is derived rigorously, and it is presented in a form which can be evaluated very efficiently, Moment method is used to solve the magnetic current from which the input impedance of the antenna configuration is obtained, The equivalent radius of the slot is used so that simple formulae developed for the cylindrical dipole can be applied directly, The effects of the slot's length, the slot's position, and the slot's width on the broadside TE(111) mode input impedance are studied, and reasonable agreement between theory and experiment is obtained.
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页码:1192 / 1198
页数:7
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