A Novel Implementation of Discrete Complex Image Method for Layered Medium Green's Function

Autor:	Li Jun Jiang, Weng Cho Chew, Yongpin P. Chen
Rok vydání:	2011
Předmět:	Mathematical optimization Function approximation Kernel (image processing) Matrix algebra Robustness (computer science) Matrix pencil Image processing Sommerfeld identity Electrical and Electronic Engineering Algorithm Microstrip Mathematics
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 10:419-422
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2011.2152358
Popis:	A novel implementation of discrete complex image method (DCIM) based on the Sommmerfeld branch cut is pro posed to accurately capture the far-field behavior of the layered medium Green's function as a complement to the traditional DCIM. By contour deformation, the Green's function can be naturally decomposed into branch-cut integration (radiation modes) and pole contributions (guided modes). For branch-cut integration, matrix pencil method is applied, and the alternative Sommerfeld identity in terms of kz integration is utilized to get a closed-form solution. The guided modes are accounted for with a pole-searching algorithm. Both one-branch-cut and two-branch-cut cases are studied. Several numerical results are presented to validate this method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::262aa4543a9bf3419e43ea5535ac9ae7 https://doi.org/10.1109/lawp.2011.2152358 Zobrazit plný text záznamu