INPUT IMPEDANCE OF ANNULAR-RING MICROSTRIP ANTENNAS WITH A DIELECTRIC COVER

被引：12
|
作者：
FAN, ZB [1 ]
LEE, KF [1 ]
机构：
[1] UNIV TOLEDO,DEPT ELECT ENGN,TOLEDO,OH 43606
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1992年 / 40卷 / 08期
关键词：
D O I：
10.1109/8.163440
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 theoretical and numerical analysis is performed on the annular-ring microstrip antenna with a dielectric cover. The problem is formulated in the Hankel transform domain, taking a coaxial feed into consideration. First the integral equations for the surface current density on the patch are derived. Galerkin's method is then used to solve for the surface current density and a stationary formula for the input impedance is obtained. Numeric-al results showing the effects of a dielectric cover on the TM12 mode of the annular-ring are given. It is found that the dielectric cover reduces the resonant frequency, decreases the resonant resistance and increases the impedance bandwidth.
引用
收藏
页码：992 / 995
页数：4
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