Concept

Impedance bridging

Publications associées (46)

Design, Realization and Experimental Test of a Coaxial Exponential Transmission Line Adaptor for a Half Impulse Radiating Antenna

This paper describes the simulation, design, realization, and experimental test of a tapered transmission line (TL) for adapting a broad-band impulse generator to a radiating antenna, for a frequency range of 50 MHz-1 GHz. Two different taper geometries ar ...

2011

ESD testing and combdrive snap-in in a MEMS tunable grating under shock and vibration

Herbert Shea, Robert Andrew Lockhart, Subramanian Sundaram, Maurizio Tormen

This work describes a method for tracking the dynamics of electrostatic discharge (ESD) sensitive MEMS structures during ESD events, as well as a model for determining the reduced combdrive snap-in voltage under vibration and shock. We describe our ESD tes ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Micromachined chip-scale plasma light source

Philippe Renaud, Herbert Shea

We report on the microfabrication and testing of a chip- scale plasma light source. The device consists of a stack of three anodically bonded Pyrex wafers, which hermetically enclose a gas-filled cavity containing interdigitated Aluminum electrodes. When t ...

Elsevier2009

A very wideband antenna with dynamically-controllable band rejection

Julien Perruisseau-Carrier

A very wideband slot antenna with reconfigurable stopband is presented. The reconfiguration is achieved by modifying the effective length of an embedded stopbandresonator by means of three pairs of PIN diodes. Four different operative states—three of them ...

2009

Lightning-induced currents in buried coaxial cables: A frequency-domain approach and its validation using rocket-triggered lightning

Mario Paolone, Emanuel Petrache

The aim of this paper is to present an experimental validation of a frequency- domain approach to the solution of the lightning electromagnetic field-to- buried cable coupling equations. The coupling to the inner conductor is evaluated using the concept of ...

2007

Contributions aux études sur le couplage électroacoustique dans les espaces clos en vue du contrôle actif

Pierre-Jean René

The aim of this work was to analyze the global behavior of a loudspeaker exciting a room in the frequency band of its first modes, for the purpose of active control applications. First, the loudspeaker in free field was studied. The characterization of a l ...

EPFL2006

Lightning-induced currents in buried coaxial cables

Mario Paolone, Emanuel Petrache

We present a review of theoretical methods to compute lightning-induced currents and voltages on buried cables. The evaluation of such induced disturbances requires the calculation of the electric field produced by lightning along the cable path. We show t ...

2006

Characterization of a high-density, large-area VHF plasma source

Hannes Schmidt

Feasibility Study of Shaped Electrode The objective of this project was a feasibility study of a novel, large-area plasma reactor for thin film production, based on a shaped electrode technique ("lens") to compensate the standing wave non-uniformity. Cyli ...

EPFL2006

Micromachined impedance spectroscopy flow cytometer for cell analysis and particle sizing

Philippe Renaud, Shady Didier Gawad

A new cytological tool, based on the micro Coulter particle counter (CPC) principle, aimed at diagnostic applications for cell counting and separation in haematology, oncology or toxicology is described. The device measures the spectral impedance of indivi ...

2001

Models of the arterial tree

Nikolaos Stergiopoulos, Nico Westerhof

The arterial system can be modelled by means of distributed analogs and by lumped parameter representations, such as the Windkessel. The distributed models, together with biological data, lead to the explanation of arterial function in terms of pressure an ...

2000

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