Centre National Detudes Spatiales

Centre National De La Recherche Scientifique

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

Centre National De La Recherche Scientifique-cnrs

Institut National Polytechnique De Toulouse

Institut National Des Sciences Appliquees De Toulouse

Universite Toulouse Iii – Paul Sabatier

Smart Catch Inc.

Ovalie Innovation

Hervé Aubert

Nelson Fonseca

Sami Hebib

Lionel Ries

Christophe Delaveaud

Hubert Diez

Alexandru Takacs

Olivier Pascal

Christophe Vieu

Bernard Malavaud

Daniel Belot

Camille Jouvaud

Patrick Pons

Lamyaa Hanane

Luis-Felipe Fonseca-Dias

Alejandro Kayum Jimenez-zenteno

David Bourrier

Elise Bou

Aline Cerf

Thierry Veronese

Franck Chebila

A device for measuring a physical quantity, including at least a transceiver unit for electromagnetic waves, an antenna-sensor including a sensor integrated into a target antenna having at least one excitation port, the antenna-sensor having a variable impedance with electromagnetic transduction, the measuring device being configured, per predetermined frequency band and independently of the angular difference between the transmission and reception of waves, for measuring the electromagnetic response of the antenna-sensor at least from an ellipticity rate of an electromagnetic field backscattered by the antenna-sensor, the ellipticity rate characterizing the polarization of the electromagnetic field configured to be measured by the transceiver unit, the electromagnetic response being representative, by electromagnetic transduction, of the at least one physical quantity to be measured.

Device for measuring at least one physical quantity and related determination method

The invention concerns a helical antenna comprising a shape of revolution and a plurality of radiating strands helically wound around the shape of revolution, characterized in that each radiating strand is defined by a repetition of a fractal pattern comprising segments formed by a sinusoidal curve.

Compact helical antenna with a sinusoidal profile modulating a fractal pattern

The invention relates to an antenna comprising a plurality of metallic elements (), said metallic elements () being in point contact () with a ground plane (M) and equally distributed about a central axis of symmetry (D) of the antenna, perpendicular to the ground plane (M). The antenna of the invention is characterized in that each metallic element extends from the point contact at a non-zero angle of inclination (q) to said ground plane (M) and in that the ground plane (M) includes at least one cavity (--) so that, in operation, the antenna matching is better in a specified frequency band than when the ground plane (M) has no cavities.

Antenna having oblique radiating elements

The invention relates to an antenna of the helix type, comprising a plurality of radiating strands wound in a helix in an axisymmetric form (), characterized in that each radiating strand is made up of at least one reference pattern (MR, MR, MR) defined by an analytic function defined in a reference frame, the axis of the abscissae of which is the director axis of the radiating strands and is a periodic function of (I) or (II) and Acorrespond respectively to the frequency and to the amplitude of the sinusoid of index k. 

Antenna of the helix type having radiating strands with a sinusoidal pattern and associated manufacturing process

Growing community of inventors

Toulouse, France

Hervé Aubert