Patents by Inventor John Ondria

John Ondria 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).

  • Quartz microstrip gunn oscillator
    Patent number: 4890074
    Abstract: A microwave microstrip oscillator includes a thin dielectric substrate, a Gunn diode mounted within the thickness of the substrate, an annular conductive resonator lying on the surface of the substrate and at least partially surrounding the Gunn diode, and a varactor diode associated with the Gunn diode for controlling the frequency of oscillation of the Gunn diode. A microstrip circuit coupled to the Gunn diode extracts an output power signal at a desired microwave frequency.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: December 26, 1989
    Assignee: Marconoi Electronic Devices Limited
    Inventor: John Ondria
  • Microwave/millimeterwave oscillator using transferred electron device
    Patent number: 4222014
    Abstract: A microwave/millimeterwave oscillator includes a transferred electron device adapted to operate at a first frequency. The device is housed in a waveguide transmission line in a quarter wavelength, quasi-radial mode cavity dimensioned to enable the device to oscillate at a second frequency, higher then the first frequency.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: September 9, 1980
    Assignee: Alpha Industries, Inc.
    Inventor: John Ondria