Particle swarm optimization of antenna arrays with efficiency constraints

Papadopoulos, KA; Papagianni, CA; Gkonis, PK; Venieris, IS; Kaklamani, DI

dc.contributor.author	Papadopoulos, KA	en
dc.contributor.author	Papagianni, CA	en
dc.contributor.author	Gkonis, PK	en
dc.contributor.author	Venieris, IS	en
dc.contributor.author	Kaklamani, DI	en
dc.date.accessioned	2014-03-01T02:03:04Z
dc.date.available	2014-03-01T02:03:04Z
dc.date.issued	2011	en
dc.identifier.issn	19378726	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29351
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-79954551085&partnerID=40&md5=4394c13afc55e8763e7b4a5d4b3410dc	en
dc.subject.other	Aperture efficiency	en
dc.subject.other	Dipole arrays	en
dc.subject.other	Diversity performance	en
dc.subject.other	Element correlations	en
dc.subject.other	Feed phase	en
dc.subject.other	Induced voltages	en
dc.subject.other	Linear arrays	en
dc.subject.other	Multi objective	en
dc.subject.other	Multi-antenna systems	en
dc.subject.other	Non-linear constraints	en
dc.subject.other	Optimization goals	en
dc.subject.other	Optimized configuration	en
dc.subject.other	Phased array antennas	en
dc.subject.other	Radiation patterns	en
dc.subject.other	Receiver front-ends	en
dc.subject.other	Scan angle	en
dc.subject.other	Side lobes	en
dc.subject.other	Solution set	en
dc.subject.other	Spatial configuration	en
dc.subject.other	Viable solutions	en
dc.subject.other	Array processing	en
dc.subject.other	Method of moments	en
dc.subject.other	Multiobjective optimization	en
dc.subject.other	Particle swarm optimization (PSO)	en
dc.subject.other	Radio communication	en
dc.subject.other	Receiving antennas	en
dc.subject.other	Antenna phased arrays	en
dc.title	Particle swarm optimization of antenna arrays with efficiency constraints	en
heal.type	journalArticle	en
heal.publicationDate	2011	en
heal.abstract	Phased array antennas are a viable solution to a number of problems related to radio communications applications. In this work, the multi-objective stochastic MOPSO algorithm is used to optimize the spatial configuration of a symmetric phased linear array. The defined optimization goals were the suppression of the radiation pattern sidelobes at a specified maximum scan angle as well as the minimization of the induced voltages correlation at the receiver front- end in order to maximize diversity performance. Non-linear constraints were enforced on the solution set, related to the multi-antenna system aperture efficiency and related to the mismatching when the array is scanned. The obtained optimized configurations for an array composed of 16 dipoles resulted in reducing the sidelobes up to 2.5 dB, when scanned 60° away from broadside, compared to a linear array with elements spaced λ/2 apart. Furthermore, the optimized dipole arrays were characterized by a maximum element correlation of 0.12 to 0.43. The performance of obtained configurations was shown to be tolerant to feed phase variations that appear in realistic implementations. The arrays were analyzed employing the Method of Moments (MoM).	en
heal.journalName	Progress In Electromagnetics Research M	en
dc.identifier.volume	17	en
dc.identifier.spage	237	en
dc.identifier.epage	251	en