Enhancement of the power radiated by a dipole antenna at boresight by means of a left handed superstrate
Ver/
Fecha
2006Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
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nodoi-noplumx
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Resumen
In this paper a comparison between the measured radiation performances of a single dipole and a dipole with
a left handed superstrate based on a finite periodic repetition of a unit cell is presented. First of all the return losses and
resonant frequency of the dipole has been measured for different sizes of the superstrate, having a good impedance
matching and a decrease in the resonant frequ ...
[++]
In this paper a comparison between the measured radiation performances of a single dipole and a dipole with
a left handed superstrate based on a finite periodic repetition of a unit cell is presented. First of all the return losses and
resonant frequency of the dipole has been measured for different sizes of the superstrate, having a good impedance
matching and a decrease in the resonant frequency as the number of cells increase. By using an anechoic chamber and a
receiver horn antenna, the power transmitted at boresight has been measured for different frequencies, observing a
filtering behaviour due to the resonant characteristic of the superstrate and an improvement of the power transmitted at
the resonant frequency of around 3 dB. Comparing the H and E plane radiation patterns of a dipole and the dipole with
superstrate, more symmetrical and directive radiation patterns can be observed. Finally, a comparison between the
simulated and measured aperture efficiency is presented with a good agreement. [--]
Materias
Boresight radiation,
Dipole antennas,
Left-handed superstrate
Editor
IEEE
Publicado en
IEEE International Workshop on Antenna Technology Small Antennas and Novel Metamaterials, 2006.
Notas
Trabajo presentado al IEEE International Workshop on Antenna Technology (IWAT06). Nueva York, 2006.
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila