RCS OF WAVE-GUIDE CAVITIES - A HYBRID BOUNDARY-INTEGRAL MODAL APPROACH

被引：41
作者：
LING, H
机构：
[1] Department of Electrical and Computer Engineering, The University of Texas, Austin
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1990年 / 38卷 / 09期
关键词：
D O I：
10.1109/8.56993
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 hybrid technique which combines the flexibility of the boundary-integral method and the efficiency of the modal approach is presented for analyzing the electromagnetic scattering from open waveguide cavities. First the generalized scattering matrices of the arbitrary waveguide discontinuity regions are determined using a boundary-integral equation formulation. The scattering matrix of the composite structure is found by cascading the scattering matrices of individual sections. The radar cross section of the open cavity is then calculated by a reciprocity formulation in conjunction with the Kirchhoff's approximation. Excellent agreements with the standard method of moments solution and with experimental data for offset bend structures are found. Examples of cavities with arbitrarily shaped and absorber-coated terminations are also presented. © 1990 IEEE
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页码：1413 / 1420
页数：8
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