Closed-form expressions for layered media green's functions that are reliable both in the near field and in the far field

被引：0
|
作者：
Boix, R. R. [1 ]
Mesa, F. L. [2 ]
Medina, F. [1 ]
机构：
[1] Univ Seville, Coll Phys, Dept Elect & Electromagnet, Av Reina Mercedes S-N, E-41012 Seville, Spain
[2] Univ Seville, Sch Comp Engn, Dept Appl Phys, E-41012 Seville, Spain
来源：
PIERS 2007 BEIJING: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PTS I AND II, PROCEEDINGS | 2007年
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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 authors have developed an algorithm for the determination of accurate closedform expressions of Green's functions for multilayered media. The algorithm is based on the fitting of the spectral domain Green's functions in terms of an asymptotic term plus a ratio of two polynomials. The fitting is carried out via the method of total least squares, which is a non-iterative method demanding very few computational resources. The resulting closed-form expressions for the Green's functions consist of a quasistatic term plus a sum of cylindrical waves. The quasistatic term provides the near-field behavior and the cylindrical waves provide the farfield behavior. As a consequence of this, the closed-form expressions are very accurate irrespective of the distance between the source point and the observation point.
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页码：57 / +
页数：2
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