Publications associées à Characterization of a Metamaterial-Enabled Waveguide Diplexer for Ka-Band Satellite Communication Systems

Publications associées (13)

High-speed femtosecond UV laser writing of low-loss waveguides in fused silica

Daniel Talán Echarri, Yves Bellouard, Ernesto Gribaudo, Lisa Jutta Ackermann, Benedikt Hermann

We demonstrate ultra-low-loss femtosecond laser-written waveguides in fused silica using 450 fs ultraviolet pulses from a frequency-tripled ytterbium laser. This favorable regime only appears at a low pulse density, enabling a two orders of magnitude faste ...

Optica Publishing Group2025

Spin wave dispersion of ultra-low damping hematite ( α−Fe2O3 ) at GHz frequencies

Dirk Grundler, Mohammad Hamdi, Ferdinand Rémy Hynek Posva

Low magnetic damping and high group velocity of spin waves (SWs) or magnons are two crucial parameters for functional magnonic devices. Magnonics research on signal processing and wave-based computation at GHz frequencies focused on the artificial ferrimag ...

2023

Fabrication, Characterization, and Simulation of Glass Devices with AlN Thin-Film Transducers for Excitation of Ultrasound Resonances

Paul Muralt, Ramin Matloub Aghdam

We present the fabrication of 570-mu m-thick millimeter-sized soda-lime-silicate float-glass blocks with a 1-mu m-thick AlN thin-film piezoelectric transducer sandwiched between thin metallic electrodes and deposited on the top surface. The electromechanic ...

American Physical Society (APS)2021

Far-Field Subwavelength Acoustic Imaging by Deep Learning

Romain Christophe Rémy Fleury, Bakhtiyar Orazbayev

Seeing and recognizing an object whose size is much smaller than the illumination wavelength is a challenging task for an observer placed in the far field, due to the diffraction limit. Recent advances in near- and far-field microscopy have offered several ...

American Physical Society2020

Développement et validation d’une d’antenne acoustique à ondes de fuite

Juan Ramon Mosig, Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani

Les métamatériaux acoustiques désignent des structures acoustiques présentant des propriétés inédites dans la nature, comme une masse négative et/ou un module de compressibilité négatif. Une réalisation de type ligne de transmission unidimensionnelle, cons ...

2016

Theory, design and measurement of near-optimal graphene reconfigurable and non-reciprocal devices at terahertz frequencies

Michele Tamagnone

This thesis explores the applications of graphene for terahertz and far infrared optical components and antennas, with particular emphasis on tunable and non-reciprocal devices. Both terahertz technologies and graphene are emerging fields which hold many p ...

EPFL2016

Approaching soft X-ray wavelengths in nanomagnet-based microwave technology

Dirk Grundler, Haiming Yu

Seven decades after the discovery of collective spin excitations in microwave-irradiated ferromagnets, there has been a rebirth of magnonics. However, magnetic nanodevices will enable smart GHz-to-THz devices at low power consumption only, if such spin wav ...

Nature Publishing Group2016

Graphitic carbon in a nanostructured titanium oxycarbide thin film to improve implant osseointegration

Giovanni Longo

A nanostructured coating layer on titanium implants, able to improve their integration into bones and to protect against the harsh conditions of body fluids, was obtained by Ion Plating Plasma Assisted, a method suitable for industrial applications. A tita ...

Elsevier Science Bv2015

Efficient network representation of grounded patch-based FSS

Juan Ramon Mosig, Maria Garcia Vigueras

The disposal of an equivalent network representation to characterize the frequency behavior of grounded periodic arrays of printed patches is here combined with the assistance of full-wave electromagnetic simulator to achieve a very efficient method for an ...

2014

Blue surface plasmon propagation along thin gold film-gas interface and its use for sensitive nitrogen dioxide detection

Giovanni Dietler, Serguei Sekatski

We demonstrate effective surface plasmon propagation along thin gold film in a blue spectral range: the measured 0.6 degrees angular width of the plasmon excitation peak corresponds to the propagation length around 7 mu m. For this end, we prepared a speci ...

Elsevier2013

Realization and Characterization of POLICRYPS-like Structures Including Metallic Subentities

Toralf Scharf

A first characterization of newly realized micro periodic structures including metallic nanoparticles is reported. The original mixture, generally utilized for the realization of polymer-liquid-crystal-polymer-slices gratings (POLICRYPS), has been enriched ...

2012

Proposal and Validation of Medium-Frequency Power Transformer Design Methodology

Alfred Rufer

Power electronics is continuously evolving toward higher power densities. Consequently, volume, weight, and material reduction are becoming major design issues, which lead the research focus toward high/medium-frequency power conversion systems. This paper ...

2011

On the mechanisms of differential-mode to common-mode conversion in the broadband over power line (BPL) frequency band

Farhad Rachidi-Haeri, Marcos Rubinstein, José-Luis Bermudez, Ana Vukicevic

The conversion between the common and the differential modes is of great importance in the transmission of data over poorly balanced cables such as electrical wiring. In this paper, we have studied some of the mechanisms involved in this conversion, both e ...

2006