Transient near-field to far-field transform based on a multilevel surface decomposition scheme

A. Shlivinski, A. Boag

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

Abstract

A fast multilevel algorithm with reduced memory requirements for the evaluation of transient near-field to far-field transforms is presented. The computational scheme is based on a hierarchical decomposition of an arbitrary shaped enclosing surface over which the near-fields of an antenna or a scatterer are given. For surface subdomains at the highest decomposition level, the angular-temporal far-field patterns are calculated directly from the known near fields over a sparse angular grid of directions and a short temporal duration. The multilevel computation comprises angular and temporal interpolations thus increasing angular resolution and temporal duration of radiation patterns while aggregating the subdomain contributions between successive decomposition levels. These steps are repeated until obtaining the transient far-field response of the whole enclosing surface. The computational complexity of the proposed algorithm is substantially lower than that of the direct evaluation. Additional reduction in memory requirements is obtained by formulating the algorithm as a marching-on-in-time windowed scheme.

Original languageEnglish
Title of host publicationProceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12
Pages47-50
Number of pages4
DOIs
StatePublished - 7 Nov 2012
Event2012 14th International Conference on Electromagnetics in Advanced Applications, ICEAA 2012 - Cape Town, South Africa
Duration: 2 Sep 20127 Sep 2012

Publication series

NameProceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12

Conference

Conference2012 14th International Conference on Electromagnetics in Advanced Applications, ICEAA 2012
Country/TerritorySouth Africa
CityCape Town
Period2/09/127/09/12

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