Patents by Inventor Othmar Tegel

Othmar Tegel 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).

  • Patent number: 4560952
    Abstract: A stabilized microwave oscillator having a selected operating frequency range, composed of a rectangular waveguide dimensioned to have a cutoff frequency above the selected operating frequency range, at least one active semiconductor element and components connected for supplying a direct operating voltage to the element, mounted in the rectangular waveguide, a transmission resonator, and a coupling device coupling the rectangular waveguide to the resonator, the coupling device including a waveguide section having a length of about .lambda./2, where .lambda. is the wavelength of the center frequency of the operating frequency range, and dimensioned at least in part to operate as an evanescent mode waveguide and/or a waveguide having a cutoff frequency in the vicinity of the upper end of the selected operating frequency range.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: December 24, 1985
    Assignee: ANT Nachrichtentechnik GmbH
    Inventors: Othmar Tegel, Hardial S. Gill
  • Patent number: 4270099
    Abstract: A circuit arrangement for generating and stably amplifying broadband rf signals. The circuit arrangement includes a first rectangular waveguide designed for operation in a frequency range below its cutoff frequency and a second rectangular waveguide for operation at the operating frequency. An active semiconductor element is disposed in the first rectangular waveguide and a direct voltage is supplied to the semiconductor element. At least one waveguide section is provided for connecting the first and second rectangular waveguides and has the same width as the second rectangular waveguide and a height less than the second rectangular waveguide. The waveguide section matches the cross section of the first rectangular waveguide to the cross section of the second rectangular waveguide.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: May 26, 1981
    Assignee: Licentia Patent-Verwaltungs-G.m.b.H.
    Inventors: Hardial S. Gill, Othmar Tegel