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Mostrando ítems 61-70 de 86
Horn antenna lens for multi-beam applications
(2010)
Contribución a congreso / Biltzarrerako ekarpena,
A spherical discrete lens antenna based on the back-toback
combination of two choked-horn antennae arrays
interconnected through smooth waveguides sections
implementing the spherical phasing law, has been
designed, simulated ...
Resolution capabilities of future THz cameras
(2010)
Contribución a congreso / Biltzarrerako ekarpena,
THz technology for developing imaging
systems has recently aroused great interest, mainly due
to the large number of applications in which these
frequencies can be used: security, vision in hard
environments, etc.
In this ...
Corrugated horn antenna noise temperature characterisation for the NRL water vapor millimeter-wave spectrometer project
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
In this paper the antenna noise temperature for two different corrugated horn antennas (old model and new model) for NRL WVMS is being characterized. The whole optical system will be simulated with Ticra’s
GRASP software, ...
New regimes to achieve enhanced transmission through subwavelength hole arrays
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
In this communication we present millimetre- and THz-waves experimental confirmation of enhanced
transmission through subwavelength hole arrays with rectangular lattice when the incident electric field is parallel to ...
Suberb gaussian beam efficiency corrugated horn antennas
(2010)
Contribución a congreso / Biltzarrerako ekarpena,
In this paper we are presenting the possibilities of
corrugated horn antennas that combine horizontal and
vertical corrugations.
Discrete lenses for multibeam applications
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
The capability of having many
different beams illuminating the earth surface from a
geostationary satellite has been an issue of interest
during the last few years.
The need of increasing the services provided ...
The beauty of anisotropy in extraordinary transmission fishnet metamaterials
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
In this work, we explore both numerically and experimentally, the possibility to obtain positive and negative refraction regimes that depend on the wave polarization, exploiting the strong anisotropy of extraordinary ...
Analysis of surface-plasmon-like modes under an engineering perspective
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
In this communication we show how one can exploit equivalent circuits to analyze surface-plasmon-like modes (slit and hole arrays, Sievenpiper mushrooms and coaxial hole arrays) and to propose new designs with outstanding ...
High-order PLL design with constant phase margin
(IEEE, 2010)
Contribución a congreso / Biltzarrerako ekarpena,
In this paper we describe a novel procedure to design
high-type high-order Phase Locked Loops (PLLs) from lower
order prototypes, preserving a prescribed Phase Margin (PM).
The method builds on a model recently proposed ...
Sculpting metals for anomalous transmission phenomena, complex waves and negative refractive metamaterials: underlying physics and applications
(2011)
Contribución a congreso / Biltzarrerako ekarpena,
In this talk, the potential of controlling the electromagnetic propagation by
periodically-textured surfaces is reviewed. It is shown that backward-wave- and
slow-wave-propagation, superluminal, effective negative ...