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Broad-band fragmented aperture phased array element design using genetic algorithms
KTH, School of Electrical Engineering (EES).
KTH, School of Electrical Engineering (EES).
2005 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 53, no 10, 3280-3287 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a synthesis procedure to design thin broad-band fragmented aperture array elements is described. The arrays are assumed to be infinite periodic and the elements consist of a conducting pattern etched on a dielectric backed by a groundplane. A genetic algorithm (GA) is used to design the conducting pattern, relative permittivity, and thickness of the dielectric substrate with respect to array scan and bandwidth performance. The fitness function in the GA is evaluated using a finite-difference time-domain code with periodic boundary conditions. For a substrate thicker than about 0.1 lambda(L) (lambda(L)=wavelength at the lowest frequency in the frequency band investigated), it was found that a bandwidth of at least one octave can be obtained for arrays scanned within 45 degrees from broadside.

Place, publisher, year, edition, pages
2005. Vol. 53, no 10, 3280-3287 p.
Keyword [en]
broad-band antennas, finite-difference time-domain (FDTD), genetic algorithm (GA), phased arrays
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-37884DOI: 10.1109/TAP.2005.856340ISI: 000232501400021Scopus ID: 2-s2.0-27644548491OAI: oai:DiVA.org:kth-37884DiVA: diva2:435429
Available from: 2011-08-18 Created: 2011-08-18 Last updated: 2017-12-08Bibliographically approved

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Thors, BjörnSteyskal, Hans
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