Design of a Six-Sector Switched Parasitic Planar Array Using the Method of Genetic Algorithms

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dc.contributor.author Varlamos, PK en
dc.contributor.author Capsalis, CN en
dc.date.accessioned 2014-03-01T01:18:51Z
dc.date.available 2014-03-01T01:18:51Z
dc.date.issued 2003 en
dc.identifier.issn 0929-6212 en
dc.identifier.uri http://hdl.handle.net/123456789/15221
dc.subject Electronic beam steering en
dc.subject Genetic algorithms en
dc.subject Smart antennas en
dc.subject Switched parasitic arrays en
dc.subject.classification Telecommunications en
dc.subject.other Antenna feeders en
dc.subject.other Bandwidth en
dc.subject.other Directional patterns (antenna) en
dc.subject.other Genetic algorithms en
dc.subject.other Smart antennas en
dc.subject.other Antenna arrays en
dc.title Design of a Six-Sector Switched Parasitic Planar Array Using the Method of Genetic Algorithms en
heal.type journalArticle en
heal.identifier.primary 10.1023/A:1025329912599 en
heal.identifier.secondary http://dx.doi.org/10.1023/A:1025329912599 en
heal.language English en
heal.publicationDate 2003 en
heal.abstract Switched parasitic planar arrays, as possible implementations of smart antennas, and an efficient method of designing them are presented in this paper. The radiation pattern of an array can be controlled by a digital word, the insertion of which in the antenna feeding circuit achieves electronic beam steering. The 1s and the 0s in the digital word represent the active and short-circuited elements in the array, respectively. The aim of the design is to cover the azimuth plane with six radiation patterns, each one having 3 dB beamwidth equal to 60degrees and relative sidelobe level not more than -3 dB. The well-known genetic algorithms are used to optimize the antenna performance, determining the element positions and voltage phase values. This is made feasible by selecting the digital words, among the 2(N)-1 available (N-number of elements), which maximize the objective function containing the pattern requirements of the design. The numerical results presented show a possible application of this idea. An array of seven identical dipoles lambda/2 offers diagrams, with an average 3 dB beamwidth equal to 63degrees. Relative sidelobe levels lower than -3 dB are obtained. Simulations at different frequencies prove that the array designed here is a narrowband one and its bandwidth is 2.5% of the carrier frequency. en
heal.publisher KLUWER ACADEMIC PUBL en
heal.journalName Wireless Personal Communications en
dc.identifier.doi 10.1023/A:1025329912599 en
dc.identifier.isi ISI:000184874600005 en
dc.identifier.volume 26 en
dc.identifier.issue 1 en
dc.identifier.spage 77 en
dc.identifier.epage 88 en

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