Suppression of field projection error in EPA at low frequencies by augmentation method

L. E. Sun, Weng Cho Chew, Jianming Jin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Equivalence principle algorithm (EPA) using the high-order field point sampling scheme [1] has low frequency breakdown problem when the frequency becomes very low [2]. The low frequency problem is usually remedied by the loop-tree decomposition method [3]. However, this method suffers from the need to search for loops. Finding loops for the subdomains in EPA, especially for connected subdomains cases, becomes very involved. In recent years, researchers have proposed the current and charge equations for low frequency breakdown problems [4, 5, 6]. These methods can improve the conditioning of the matrix equations. Moreover, they are not burdened by loop search. This paper proposes an augmented EPA formulation. It introduces charge density unknowns on the equivalence surface (ES). Hence, the low frequency breakdown of field projection operators in EPA is removed. The new augmented scheme is stable in a wide frequency range.

Original languageEnglish (US)
Title of host publication2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010
DOIs
StatePublished - Nov 22 2010
Event2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010 - Toronto, ON, Canada
Duration: Jul 11 2010Jul 17 2010

Publication series

Name2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010

Other

Other2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010
CountryCanada
CityToronto, ON
Period7/11/107/17/10

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture

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