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Near field multifocusing on antenna arrays via non-convex optimisation

Author:
Álvarez Muñiz, JanaUniovi authority; González Ayestarán, RafaelUniovi authority; León Fernández, GermánUniovi authority; Herrán Ontañón, Luis FernandoUniovi authority; Arboleya Arboleya, AnaUniovi authority; López Fernández, Jesús AlbertoUniovi authority; Las Heras Andrés, Fernando LuisUniovi authority
Publication date:
2014
Editorial:

IET (Institution of Engineering and Technology)

Publisher version:
http://dx.doi.org/10.1049/iet-map.2013.0563
Citación:
IET Microwaves Antennas & Propagation, 8(10), p. 754-764 (2014); doi:10.1049/iet-map.2013.0563
Descripción física:
p. 754-764
Abstract:

An optimisation framework for near field multifocusing on antenna arrays is proposed. Its aim is to obtain the feeding weights that must be applied to the elements of the array so that the antenna focuses on two or more targets simultaneously. The method is based on the definition of a proper cost function, which is minimised using an optimisation algorithm over an equivalent least squares problem. The success of the technique is noted in the fact that different array parameters can be obtained: magnitude and phase of the array elements or only phase synthesis. In order to show the efficiency of the method, several tests are carried out using different arrays and optimisation parameters. The simulation, manufacture and measurement of an 8 × 8 planar array able to focus on two different targets is also performed. Results show how the framework can be applied to general arrays and demanding requirements, so it may be easily extended to different synthesis problems besides multifocusing

An optimisation framework for near field multifocusing on antenna arrays is proposed. Its aim is to obtain the feeding weights that must be applied to the elements of the array so that the antenna focuses on two or more targets simultaneously. The method is based on the definition of a proper cost function, which is minimised using an optimisation algorithm over an equivalent least squares problem. The success of the technique is noted in the fact that different array parameters can be obtained: magnitude and phase of the array elements or only phase synthesis. In order to show the efficiency of the method, several tests are carried out using different arrays and optimisation parameters. The simulation, manufacture and measurement of an 8 × 8 planar array able to focus on two different targets is also performed. Results show how the framework can be applied to general arrays and demanding requirements, so it may be easily extended to different synthesis problems besides multifocusing

URI:
http://hdl.handle.net/10651/29336
ISSN:
1751-8725; 1751-8733
DOI:
10.1049/iet-map.2013.0563
Patrocinado por:

Ministerio de Ciencia e Innovacion de España /FEDER [CONSOLIDER-INGENIO CSD2008-00068, TEC2011-24492]; Gobierno del Principado de Asturias (PCTI)/FEDER-FSE [EQUIP08-06, FC09-COF09-12, EQUIP10-31, PC10-06, BP10-165]; Catedra Telefónica-Universidad de Oviedo

Id. Proyecto:

MEC-FEDER/CONSOLIDER-INGENIO CSD2008-00068

MEC-FEDER/TEC2011-24492

Principado de Asturias (PCTI)-FEDER-FSE/EQUIP08-06, FC09-COF09-12, EQUIP10-31, PC10-06, BP10-165

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