Patents by Inventor Leonid Aupy

Leonid Aupy 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).

  • Dual layer resonant quadrifilar helix antenna
    Patent number: 5255005
    Abstract: Disclosed is a new antenna structure having a quasi-hemispherical radiation pattern and capable of having a relatively wide passband, so that it is possible to define two neighboring transmission sub-bands therein or, again, a single wide transmission band. The antenna is of the type comprising a quadrifilar helix (11) formed by two bifilar helices (11.sub.1, 11.sub.2, 11.sub.3, 11.sub.4) positioned orthogonally and excited in phase quadrature, and including at least one second quadrifilar helix that is coaxial and electromagnetically coupled with said first quadrifilar helix (11). Preferred application to L band communications among geostationary satellites or transiting satellites with moving bodies fitted out with such antennas.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: October 19, 1993
    Assignee: L'Etat Francais Represente par LeMinistre des Pastes Telecommunications et de l'Espace
    Inventors: Claude Terret, Ala Sharatha, Leonid Aupy