Incremental length diffraction coefficients for arbitrary cylindrical scatterers

被引：8
|
作者：
Yaghjian, AD
机构：
[1] Air Force Research Laboratory, Hanscom AFB
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2001年 / 49卷 / 07期
关键词：
cylinders; electromagnetic diffraction; electromagnetic scattering; physical theory of diffraction;
D O I：
10.1109/8.933481
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：
Convenient expressions are derived for incremental length diffraction coefficients (ILDCs) in terms of the far fields of arbitrary cylindrical canonical scatterers composed of linear electromagnetic material. The derivation of these general expressions for ILDCs is based on a surface-current equivalence theorem that states that the electromagnetic fields outside cylindrical sources can be generated to any degree of accuracy by localized electric and magnetic surface currents that lie in a single plane within the source region. This equivalence theorem is proven with the help of cylindrical wave expansions and the Kottler-Franz formulas. It combines with a general even and odd decomposition of cylindrical electromagnetic fields to allow the use of previous formulas for planar surface-current ILDCs in the derivation of the general expressions for ILDCs in terms of cylindrical far fields.
引用
收藏
页码：1025 / 1032
页数：8
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