On the natural frequencies of an annular ring above a conducting half space

被引：10
作者：
Rothwell, EJ
Cloud, MJ
机构：
[1] Department of Electrical Engineering, Michigan State University, East Lansing, MI
[2] Department of Electrical Engineering, Lawrence Technological University, Southfield, MI
来源：
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 1996年 / 10卷 / 02期
关键词：
D O I：
10.1163/156939396X00946
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：
The natural resonant frequencies of an object embedded in a stratified conducting medium are considered. The special case of an annular ring is considered in detail. Extensive numerical results are examined for the case of a ring in free space above a conducting half space. This simple problem provides insight into the behavior of the natural frequencies of airborne radar targets above the earth, ice, or sea surface. Results reveal an intricate pattern of pole trajectories in the complex plane. These trajectories are studied for various combinations of height, ring geometry, constitutive parameters, and modal index.
引用
收藏
页码：155 / 179
页数：25
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