Impedance matching of a switched parasitic planar array using additional parasitic elements and the method of genetic algorithms

Varlames, PK; Karageorgou, ED; Capsalis, CN

dc.contributor.author	Varlames, PK	en
dc.contributor.author	Karageorgou, ED	en
dc.contributor.author	Capsalis, CN	en
dc.date.accessioned	2014-03-01T01:19:02Z
dc.date.available	2014-03-01T01:19:02Z
dc.date.issued	2003	en
dc.identifier.issn	0920-5071	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15335
dc.subject	Genetic Algorithm	en
dc.subject	Impedance Matching	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	Antenna feeders	en
dc.subject.other	Directional patterns (antenna)	en
dc.subject.other	Genetic algorithms	en
dc.subject.other	Impedance matching (electric)	en
dc.subject.other	Electronic beam steering	en
dc.subject.other	Antenna arrays	en
dc.title	Impedance matching of a switched parasitic planar array using additional parasitic elements and the method of genetic algorithms	en
heal.type	journalArticle	en
heal.identifier.primary	10.1163/156939303322519711	en
heal.identifier.secondary	http://dx.doi.org/10.1163/156939303322519711	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	Switched parasitic planar arrays can be used for the purpose of electronic beam steering. The insertion of a digital word in the antenna's feeding circuit may give a radiation pattern with certain characteristics, which is pointed in a desired direction. This paper presents the initial design of such an array that consists of four elements, one active and three parasitic, forming a square. Furthermore, another more complicated configuration is presented., where those four elements are surrounded by a number of parasitic elements, in order to achieve impedance matching at the element, which is active each time. The positions of the parasitic elements are selected in such a way that each radiation pattern maintains its basic characteristics, while impedance matching is achieved. The genetic algorithms are used to carry out the evaluation of the parasitic elements' coordinates. The numerical results and the diagrams presented here show the advantages and disadvantages of this method.	en
heal.publisher	VSP BV	en
heal.journalName	Journal of Electromagnetic Waves and Applications	en
dc.identifier.doi	10.1163/156939303322519711	en
dc.identifier.isi	ISI:000184492600001	en
dc.identifier.volume	17	en
dc.identifier.issue	8	en
dc.identifier.spage	1097	en
dc.identifier.epage	1111	en