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Efficient optimization of a Yagi-Uda antenna using genetic algorithm
KTH, School of Electrical Engineering (EES), Signal Processing.
2017 (English)In: ANTEM 2005 - 11th International Symposium on Antenna Technology and Applied Electromagnetics, Conference Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2017, 7852127Conference paper (Refereed)
Abstract [en]

In this paper, Yagi-Uda antenna is studied and analyzed considering a single mode cosine current distribution on all elements. A classical approach is taken for the analysis, by viewing Yagi antenna as a center-driven dipole array in which all but the actual exciter element are short-circuited at the terminals. Currents are induced in the elements via the mutual impedances, and radiation occurs as from a set of discrete sources. The mutual impedance matrix of the array is calculated using the induced EMF method and integral equations for the electric field. This analysis has led to a fast and efficient code to calculate Yagi parameters. The validity of the results has been checked with a MoM solution using NEC2 and good agreement has been observed. Then, the code is used together with a genetic algorithm in order to optimize Yagi-Uda antenna for gain maximization. A 31-element high gain Yagi with 19.2dB gain and the gain bandwidth of 8 percent is derived. Also the Pareto fronts are plotted for Yagi antennas with different number of elements which shows the trade off between the directivity and front to back lobe(F/B) ratio.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017. 7852127
Keyword [en]
EMF Method, Front to Back Lobe Ratio(F/B), Genetic Algorithm, Method Of Moments(MoM), Mutual Impedance, Pareto Fronts
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-208115DOI: 10.1109/ANTEM.2005.7852127ScopusID: 2-s2.0-85016091660ISBN: 9780973842500 (print)OAI: oai:DiVA.org:kth-208115DiVA: diva2:1106281
Conference
11th International Symposium on Antenna Technology and Applied Electromagnetics, ANTEM 2005, Saint-Malo, France, 15 June 2005 through 17 June 2005
Note

QC 20170607

Available from: 2017-06-07 Created: 2017-06-07 Last updated: 2017-06-07Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf