Patents Assigned to Alcatel Thomson Faiscaeux Hertziens
  • Evanescent mode microwave bandpass filter with a rotatable crank shape coupling antenna
    Patent number: 4746883
    Abstract: The microwave bandpass filter in the form of a cutoff frequency waveguide (1) or evanescent mode guide, being besides tunable within a range of frequencies and having at least one terminal (21, 22) of the coaxial type, has terminals each equipped with a crank-shaped coupling antenna (15) operable to be rotated about its longitudinal axis for filter tuning purposes.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: May 24, 1988
    Assignee: Alcatel Thomson Faiscaeux Hertziens
    Inventors: Marc Sauvage, Marie-Christine Henriot