Centre National De La Recherche Scientifique

Centre National Detudes Spatiales

Office National D'etudes Et De Recherches Aerospatiales

Universite Toulouse Iii – Paul Sabatier

Daniel Belot

Pierre-Louis Taberna

Patrice Simon

Hervé Aubert

Hubert Diez

Alexandru Takacs

Daniel Prost

Maxime Romier

Kévin Brousse

Jean-Marc Emile Lopez

Lise Feat

A device is suitable for revealing spatial variations in polarization of an electromagnetic radiation, in a form of localized temperature variations. The device includes a surface of a carrier which is electrically and thermally insulating, and includes an array of patterns which each consist of at least one rectilinear segment of a sensitive material, of which the orientation is variable within each pattern or between neighboring patterns. Such device may be used with a thermal camera to reveal, in infrared images, temperature variations which are localized at segments not perpendicular to a local direction of linear polarization of the radiation.

Device for revealing spatial variations in the polarisation of electromagnetic radiation

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

Growing community of inventors

Leguevin, France

Daniel Belot