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Fast Algorithm of Arbitrary Beam Propagation Based on Adaptive Elliptical Gaussian Beam Decomposition

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An algorithm for arbitrary electromagnetic (EM) beam propagation is proposed and well demonstrated in this paper. The essential idea of this algorithm is to decompose arbitrary beam into a small number of elliptical Gaussian beams, which is similar but different from existing diffracted Gaussian beam analysis (DGBA) based on Gabor expansion. The proposed algorithm utilizing adaptive Gaussian beam matching method is much more efficient than regular decomposition strategy by Gabor expansion. Beam propagation is then calculated by these elliptical Gaussian beams' superposed analytical results, with accuracy comparable with physical optics (PO) theory. This fast algorithm can be suitable for analyzing beam propagation in electrically-large systems, such as reflector antennas and quasi-optical (QO) transforming systems.

Original languageEnglish
Title of host publication2019 International Applied Computational Electromagnetics Society Symposium in Miami, ACES-Miami 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9780996007887
StatePublished - 10 May 2019
Event2019 International Applied Computational Electromagnetics Society Symposium in Miami, ACES-Miami 2019 - Miami, United States
Duration: 14 Apr 201918 Apr 2019

Publication series

Name2019 International Applied Computational Electromagnetics Society Symposium in Miami, ACES-Miami 2019

Conference

Conference2019 International Applied Computational Electromagnetics Society Symposium in Miami, ACES-Miami 2019
Country/TerritoryUnited States
CityMiami
Period14/04/1918/04/19

Keywords

  • adaptive matching
  • beam propagation
  • Gaussian beam

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