Patents by Inventor Antoine Calleau

Antoine Calleau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Circularly polarised radiating element making use of a resonance in a Fabry-Perot cavity
    Patent number: 11217896
    Abstract: A circularly polarized radiating element includes at least one excitation aperture for a wave that is linearly polarized with what is referred to as an excitation first polarization, a frequency selective surface and a metasurface comprising a two-dimensional and periodic array of metasurface cells, the excitation aperture opening onto the metasurface, the metasurface cells all being oriented identically with respect to the excitation polarization and configured to: reflect an incident wave having the excitation polarization in order to form a reflected wave polarized with the excitation polarization, and depolarize and reflect the incident wave in order to form a reflected wave polarized with the orthogonal polarization, having a phase difference substantially equal to ±90° with respect to the reflected wave polarized with the excitation polarization, and having an amplitude substantially equal to the amplitude of a wave radiated by the frequency selective surface, generated from the reflected wave polarized
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: January 4, 2022
    Assignees: THALES, INSTITUT NATIONAL DES SCIENCES APPLIQUES, UNIVERSITE DE RENNES 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Hervé Legay, Antoine Calleau, Maria Garcia Vigueras, Mauro Ettorre
  • CIRCULARLY POLARISED RADIATING ELEMENT MAKING USE OF A RESONANCE IN A FABRY-PEROT CAVITY
    Publication number: 20190305436
    Abstract: A circularly polarized radiating element includes at least one excitation aperture for a wave that is linearly polarized with what is referred to as an excitation first polarization, a frequency selective surface and a metasurface comprising a two-dimensional and periodic array of metasurface cells, the excitation aperture opening onto the metasurface, the metasurface cells all being oriented identically with respect to the excitation polarization and configured to: reflect an incident wave having the excitation polarization in order to form a reflected wave polarized with the excitation polarization, and depolarize and reflect the incident wave in order to form a reflected wave polarized with the orthogonal polarization, having a phase difference substantially equal to ±90° with respect to the reflected wave polarized with the excitation polarization, and having an amplitude substantially equal to the amplitude of a wave radiated by the frequency selective surface, generated from the reflected wave polarized
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Inventors: Hervé Legay, Antoine Calleau, Maria Garcia Vigueras, Mauro Ettorre