Patents by Inventor Yves Charlet

Yves Charlet 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).

  • Microwave acoustic wave oscillator
    Patent number: 4270100
    Abstract: The microwave oscillator is formed by a free oscillator 1 coupled with two surface or volume acoustic wave delay lines 9 and 10 connected in series or in parallel and operating by reflection. The first line imposes a delay 2.tau..sub.1, corresponding to one reciprocation, which is a multiple of the delay 2.tau..sub.2 imposed by the second line, and a=.tau.1/.tau.2 is preferably equal to 2 or 3. Application to oscillators operating at ultra-high frequencies, particularly in the L-band.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: May 26, 1981
    Assignee: Thomson-CSF
    Inventors: Jean-Pierre Bergero, Yves Charlet, Philippe Leschaeve