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Efficient optimizat...
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Modaresi, M.
(författare)
Efficient optimization of a Yagi-Uda antenna using genetic algorithm
- Artikel/kapitelEngelska2017
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Institute of Electrical and Electronics Engineers (IEEE),2017
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LIBRIS-ID:oai:DiVA.org:kth-208115
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208115URI
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https://doi.org/10.1109/ANTEM.2005.7852127DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:kon swepub-publicationtype
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QC 20170607
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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.
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Shafai, L.
(författare)
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Lindmark, BjörnKTH,Signalbehandling(Swepub:kth)u10doc6n
(författare)
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KTHSignalbehandling
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:ANTEM 2005 - 11th International Symposium on Antenna Technology and Applied Electromagnetics, Conference Proceedings: Institute of Electrical and Electronics Engineers (IEEE)9780973842500
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