Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Microwave Characterization Center

Univerisite Des Sciences Et Technologies De Lille-ustl

Centre National De La Recherche Scientifique-cnrs

Université Des Sciences Et Technologies De Lille

Christophe Gaquiere

Nicolas Vellas

Matthieu Werquin

Damien Ducatteau

Nicolas Thouvenin

Sylvain Jonniau

Didier Theron

Frédéric Bue

Jean-Christophe Joly

Benjamin Choteau

Simon Vandenbrouck

Frederic Bue-Erkmen

Frédéric Bue-Erkmen

A system for measuring the attenuation of electromagnetic shielding of an infrastructure as a function of the frequency, including a transmitter of a white noise signal with a constant power over a frequency band between a minimum frequency and a maximum frequency, a signal receiver, the transmitter and the receiver being capable of sending a signal and receiving a signal across the infrastructure, the receiver including a filter module capable of applying sliding filter on the received signal between the minimum frequency and the maximum frequency, and a double synchronous detection module capable of double synchronous detection on a signal output by the filter module.

Shielding attenuation measurement

The invention relates to a portable radiometric imaging device and to a corresponding method, finding a particular application in detecting articles carried by passengers or contained in baggage, for example in airports and train stations. The device includes a plurality of receiver antennas for picking up electromagnetic radiation from a plurality of parts of a body or an article and converting them into a plurality of signals representative of said radiation, a plurality of receiver modules associated with the antennas for receiving the signals representative of the radiation and converting them into a plurality of electrical signals, and a digital processor unit for responding to the electrical signals to create one or more digital signals representative of the electromagnetic radiation for display on a display as an image of the body or article. A correlator module is provided for correlating the electrical signals in order to form a signal representative of the electromagnetic radiation from the intersection of the two parts of the body or article.

Portable radiometric imaging device and a corresponding imaging method

The invention relates to a compact automatic impedance adapter in a waveguide, characterised in that the impedance is controlled by plungers, filling the entire guide with a magic-tee coupler plane E/plane H modifying the electrical and magnetic field, one plunger modifying the electrical field (E) in the guide and the second modifying the magnetic field (H).

Compact automatic impedance adapter in a waveguide

Growing community of inventors

Villeneuve d'Ascq, France

Christophe Gaquiere