Patents by Inventor Jacques Roquencourt

Jacques Roquencourt 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).

  • Slot hyperfrequency antenna with a structure of small thickness
    Patent number: 5337065
    Abstract: An antenna having a "suspended stripline" structure with two metal plates encircling a dielectric film is disclosed. In this structure, a channel is made for a feeder of a slot with the end of a central conductor of the line penetrating a cavity whose thickness is approximately equal to that of the channel. The slot is made in the upper wall of the cavity.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: August 9, 1994
    Assignee: Thomson-CSF
    Inventors: Georges Bonnet, Yves Commault, Jacques Roquencourt, Alain Sehan
  • Vertically polarised omnidirectional antenna
    Patent number: 3949405
    Abstract: A waveguide having a cross-section of oblong shape is pierced with two arrays of longitudinal slots located opposite one another, symmetrically in relation to the longitudinal plane of symmetry of the guide intersecting the cross-section thereof along its smaller dimension. In order to obtain the desired omnidirectional pattern, which requires that the distance between oppositely located slots should not be too great, a waveguide is used the greater dimension of the cross-section of which is reduced relatively to the value required by the operation frequency, and ridges or dielectric material are provided inside the guide for increasing its cut-off frequency.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: April 6, 1976
    Assignee: Thomson-CSF
    Inventor: Jacques Roquencourt