An Efficient Numerical Steepest Descent Path Method to Calculate the Physical Optics Scattered Fields With Concave Phase Variations

被引：0
|
作者：
Wu, Yu Mao [1 ]
Teng, Si Jia [2 ]
机构：
[1] Fudan Univ, Key Lab Informat Sci EMW MoE, Sch Informat Sci & Technol, Shanghai, Peoples R China
[2] Fudan Univ, Sch Informat Sci & Technol, Shanghai, Peoples R China
来源：
2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM | 2016年
关键词：
Physical optics integral; numerical steepest descent path method; concave phase variations; coalesce of critical points;
D O I：
暂无
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：
In this work, we develop the numerical steepest descent path (NSDP) algorithm to calculate the physical optics (PO) integrals on surface with quadratic concave phase terms. The high frequency critical points contributions are studied in detail. Numerical results demonstrate that the NSDP method could achieve the frequency independent computational workload and obtain accurate results. Furthermore, to illustrate the transition effect of the critical points, we extend the NSDP method to calculate the PO integrals with the coalescence of the critical points.
引用
收藏
页码：319 / 320
页数：2
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