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Multi-frequency and dual mode patch antennas partially filled with left-handed structures

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IIT-08-101A.pdf (2.541Mb)
Fecha
05/08/2008
Autor
Herraiz Martínez, Francisco Javier
González Posadas, Vicente
García Muñoz, Luis Enrique
Segovia Vargas, Daniel
Estado
info:eu-repo/semantics/publishedVersion
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Resumen
 
 
Multifrequency microstrip patch antennas partially filled with left-handed (LH) structures are presented. The presence of LH structures also enables miniaturized antennas. Thus, multifrequency, dual-mode, and miniaturized antennas based on single patches partially filled with LH structures have been obtained. First, multiple operation over several band frequencies is proven from the transmission-line theory. Then, an implementation based on microstrip patches partially filled with mushroom-like structures is proposed. Two multifrequency patch antennas have been designed, built, and measured. The first one shows two dipolar (patch like) modes at 1.06 GHz and 2.16 GHz and a monopolar mode (null at broadside) at 1.45 GHz. The ratio between the resonant frequencies of both dipolar modes can be arbitrarily chosen (by means of a proper design of the patch and the LH structures) and, in this case, is 2.04. The second antenna is designed to work at closer frequencies. In this case, the frequency ratio is dramatically reduced to produce a dual dipolar antenna working at 1.81 GHz and 2.20 GHz (giving a ratio of 1.21).
 
URI
http://hdl.handle.net/11531/24690
Multi-frequency and dual mode patch antennas partially filled with left-handed structures
Tipo de Actividad
Artículos en revistas
ISSN
0018-926X
Materias/ categorías / ODS
Instituto de Investigación Tecnológica (IIT)
Palabras Clave

Left-handed (LH) metamaterials, microstrip antennas, multifrequency antennas.
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Repositorio de la Universidad Pontificia Comillas copyright © 2015  Desarrollado con DSpace Software
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