Genetic algorithm applied to determine the spherical wave expansion from amplitude-only far-field data

Päivi Koivisto, Johan Stén

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

A method is presented for solving the spherical wave expansion (SWE) from far‐field amplitude‐only data. The idea is to minimize the least‐squares difference between the amplitude of the measured field and that of a calculated SWE using a combination of a genetic algorithm (GA) and Newton's method. The uniqueness aspects of the problem are addressed. A measured antenna radiation pattern is analyzed with and without phase data and the results are compared.
Original languageEnglish
Pages (from-to)402-406
JournalMicrowave and Optical Technology Letters
Volume46
Issue number4
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

spherical waves
genetic algorithms
far fields
Genetic algorithms
antenna radiation patterns
Newton methods
expansion
Directional patterns (antenna)
Newton-Raphson method
uniqueness

Keywords

  • spherical wave expansion
  • SWE
  • amplitude-only measurement
  • genetic algorithm

Cite this

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abstract = "A method is presented for solving the spherical wave expansion (SWE) from far‐field amplitude‐only data. The idea is to minimize the least‐squares difference between the amplitude of the measured field and that of a calculated SWE using a combination of a genetic algorithm (GA) and Newton's method. The uniqueness aspects of the problem are addressed. A measured antenna radiation pattern is analyzed with and without phase data and the results are compared.",
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Genetic algorithm applied to determine the spherical wave expansion from amplitude-only far-field data. / Koivisto, Päivi; Stén, Johan.

In: Microwave and Optical Technology Letters, Vol. 46, No. 4, 2005, p. 402-406.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Stén, Johan

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AB - A method is presented for solving the spherical wave expansion (SWE) from far‐field amplitude‐only data. The idea is to minimize the least‐squares difference between the amplitude of the measured field and that of a calculated SWE using a combination of a genetic algorithm (GA) and Newton's method. The uniqueness aspects of the problem are addressed. A measured antenna radiation pattern is analyzed with and without phase data and the results are compared.

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KW - amplitude-only measurement

KW - genetic algorithm

U2 - 10.1002/mop.21000

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