A novel implementation of discrete complex image method for layered medium Green's function

Yongpin P. Chen, Weng Cho Chew, Lijun Jiang

Research output: Contribution to journalArticlepeer-review

Abstract

A novel implementation of discrete complex image method (DCIM) based on the Sommmerfeld branch cut is proposed 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.

Original languageEnglish (US)
Article number5765649
Pages (from-to)419-422
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume10
DOIs
StatePublished - 2011

Keywords

  • Branch cut
  • Green's function
  • discrete complex image method (DCIM)
  • layered medium
  • pole

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A novel implementation of discrete complex image method for layered medium Green's function'. Together they form a unique fingerprint.

Cite this