Closed-form Ezpressions for Layered Media Greens Functions that are Reliable Both in the Near Field and in the Far Field
The authors have developed an algorithm for the determination of accurate closedform expressions of Greens functions for multilayered media. The algorithm is based on the fitting of the spectral domain Greens 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 Greens 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.
R. R. Boix F. L. Mesa F. Medina
Department of Electronics and Electromagnetism, College of Physics, University of SevilleAv. Reina M Department of Applied Physics 1, School of Computer Engineering, University of SevilleAv. Reina Merc
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
70-72
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）