Patents by Inventor Georg Lutteke

Georg Lutteke 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).

  • Push-pull microwave oscillator with fundamental and second harmonic outputs
    Patent number: 4527130
    Abstract: A push-pull microwave oscillator circuit, including two transistors, for producing the second harmonic of a fundamental frequency at a symmetry point of the circuit which is connected to the bases of the transistors through identical arrangements of circuit elements. The circuit includes tuning means coupled to at least one of the transistors, an output and an input. The output, which is utilized to provide to a phase comparison means an output signal at the fundamental of the second harmonic frequency, is coupled to the base of at least one of the transistors by a capacitive impedance. The input, which is utilized to receive a tuning signal produced by the phase comparison means in response to the output signal, is coupled to the tuning means.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: July 2, 1985
    Assignee: U.S. Philips Corporation
    Inventor: Georg Lutteke
  • Tunable high frequency input circuit for a television receiver that tunes both VHF and UHF channels and can be readily integrated
    Patent number: 3939429
    Abstract: The IC television tuner has a tunable oscillator and a fixed oscillator, two mixer stages and a filter in between. This tuner operates at two intermediate frequencies the first of which lies in the GHz range. The two oscillators are coupled through hybrid rings.
    Type: Grant
    Filed: July 2, 1974
    Date of Patent: February 17, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Klaus Lohn, Georg Lutteke, Gerd Schiefer, Lammert Bruntink, Paulus Petrus Maria Groenewegen, Hans Viktor Weinerth, Wilhelmus Antonius Joseph Marie Zwijsen, Karel Petrus Van Rooij