Mostrando ítems 1-10 de 81
Electromagnetic cloaking with canonical spiral inclusions
(IOP Publishing Ltd., 2008) Artículo / Artikulua,
We report an electromagnetic cloaking structure that is composed of identical canonical spiral particles. By using the Clausius-Mosotti formula, the electric and magnetic polarizabilities of a single spiral particle are ...
A metamaterial T-junction power divider
(IEEE, 2007) Artículo / Artikulua,
A metamaterial based compact microstrip T-junction power divider working at 10 GHz is proposed. The metamaterial unit cell consists of microstrip gaps and via holes whose behavior is equivalent to the combination of ...
Low profile multi-frequency dipole antenna array based on planar meta-surfaces
(IEEE, 2007) Contribución a congreso / Biltzarrerako ekarpena,
In this paper, the radiation performance of a low profile multi-frequency dipole antenna array with a planar meta-surface is presented. The meta-surface consists of two closely located parallel grids of short dipoles and ...
Planar DNG superstrate for dipole antenna gain enhancement
(2007) Contribución a congreso / Biltzarrerako ekarpena,
In this paper, a volumetric double-negative (DNG) superstrate based on grids of dipoles and wires for dipole antenna applications is proposed.
New approach to the design of corrugated horn antennas
(1997) Contribución a congreso / Biltzarrerako ekarpena,
In this paper, we present two new corrugated horn antenna designs in circular waveguide. The first one is a converter horn antenna from monomode circular waveguide TE11 to corrugated waveguide HE11 mode in a very efficient ...
On the determination of the phase center of gaussian horn antennas
(1998) Contribución a congreso / Biltzarrerako ekarpena,
Gaussian horn antenna designs have experimentally demonstrated excellent performance to produce a very pure Gaussian beam mode with extremely low sidelobes and crosspolarization levels. These results make very attractive ...
Gaussian profiled horn antennas
(1999) Contribución a congreso / Biltzarrerako ekarpena,
In many different applications parameters such efficiency, gain, directivity, etc., are really critical. By using the Gaussian techniques presented here, the radiating features of existing horn antenna systems can be ...
Measurements of a new gaussian profile corrugated horn antenna for millimeter wave applications
(IEEE, 1998) Contribución a congreso / Biltzarrerako ekarpena,
The measurements results of a new design of corrugated horn antennas [1, 2, 3] following the gaussian expansion are presented in this paper. The performance of two corrugated horn antennas of this kind was verified in ...
Generation of the HE11 mode in rectangular waveguide using gaussian techniques
(IEEE, 1999) Contribución a congreso / Biltzarrerako ekarpena,
A new and efficient design of a rectangular corrugated waveguide mode converter, from TE10 mode in a smooth rectangular monomode waveguide to HE11 mode in a corrugated rectangular waveguide, is proposed. The main idea ...
Diseño y medida de una antena choke-gaussiana
(2002) Contribución a congreso / Biltzarrerako ekarpena,
A new design of corrugated horn antenna for global earth coverage from a geostationary satellite to obtain very low sidelobes and crosspolar levels with a really compact design in a quite wide bandwidth is presented in ...