Patents by Inventor Thierry Rostan

Thierry Rostan 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).

  • Miniature annular microstrip resonant antenna
    Patent number: 6034645
    Abstract: A microwave resonant antenna includes a ring whose peripheral length determines the wavelength guided in the antenna. The ring incorporates meanders or crenellations. These have substantially radial parts so that, overall, they do not produce any field interfering with the circular polarization of a signal to be transmitted. An antenna of this kind lends itself to miniaturization. It is omnidirectional over a wide angle with a high degree of purity of circular polarization.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: March 7, 2000
    Assignee: Alcatel
    Inventors: Herve Legay, Thierry Rostan, Frederic Croq, Michel Gomez-Henry
  • Resonant antenna for transmitting or receiving polarized waves
    Patent number: 6008772
    Abstract: An antenna includes a radiating resonant member for transmitting polarized microwaves. A first diffracting system radiates waves at an angle greater than the transmission angle of the radiating member. A second diffracting system corrects the purity of polarization of the waves for some directions at least.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: December 28, 1999
    Assignee: Alcatel
    Inventors: Herve Legay, Thierry Rostan, Frederic Croq
  • System of concentric microwave antennas
    Patent number: 5995058
    Abstract: A system with two concentric antennas for two bands of microwave frequencies includes between the two concentric antennas a system for eliminating or attenuating propagation of waves from the inner antenna to the outer antenna.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: November 30, 1999
    Assignee: Alcatel
    Inventors: Herve Legay, Thierry Rostan, Frederic Croq