Patents by Inventor Leo Friesen

Leo Friesen 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).

  • Antenna amplifier, receiving system, operating method, and use of a receiving system
    Patent number: 8837647
    Abstract: An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: September 16, 2014
    Assignee: Atmel Corporation
    Inventors: Stephan Gerlach, Leo Friesen, Carsten Friedrich, Michael Amann, Carsten Huber
  • Compensating circuit for a mixer stage
    Patent number: 7809348
    Abstract: A compensating circuit for a mixer stage is provided, wherein the mixer stage has an input stage to which an input signal for mixing can be applied and has, following the input stage, a switching stage for mixing a differential input signal—obtained from the input stage as a function of the input signal—with an oscillator signal, wherein the input of the compensating circuit can be connected to an input signal terminal of the input stage and the output of the compensating circuit can be connected to an input signal terminal of the switching circuit at which the differential input signal obtained by means of the input stage is present, and wherein a compensating signal obtained by means of a compensating stage of the compensating circuit, in particular for compensating intermodulation products, can be produced by the compensating circuit at its output.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: October 5, 2010
    Assignee: Atmel Automotive GmbH
    Inventors: Michael Amann, Thorsten Fahlbusch, Leo Friesen, Andreas Leistner, Juergen Schnabel
  • ANTENNA AMPLIFIER, RECEIVING SYSTEM, OPERATING METHOD, AND USE OF A RECEIVING SYSTEM
    Publication number: 20100074370
    Abstract: An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 25, 2010
    Inventors: Stephan Gerlach, Leo Friesen, Carsten Friedrich, Michael Amann, Carsten Huber
  • Compensating circuit for a mixer stage
    Publication number: 20080070538
    Abstract: A compensating circuit for a mixer stage is provided, wherein the mixer stage has an input stage to which an input signal for mixing can be applied and has, following the input stage, a switching stage for mixing a differential input signal—obtained from the input stage as a function of the input signal—with an oscillator signal, wherein the input of the compensating circuit can be connected to an input signal terminal of the input stage and the output of the compensating circuit can be connected to an input signal terminal of the switching circuit at which the differential input signal obtained by means of the input stage is present, and wherein a compensating signal obtained by means of a compensating stage of the compensating circuit, in particular for compensating intermodulation products, can be produced by the compensating circuit at its output.
    Type: Application
    Filed: August 17, 2007
    Publication date: March 20, 2008
    Inventors: Michael Amann, Thorsten Fahlbusch, Leo Friesen, Andreas Leistner, Juergen Schnabel
  • Method and circuit system for suppressing noise in a signal processing circuit
    Patent number: 7286809
    Abstract: Noise impulses are suppressed in a signal processing circuit by gating an input signal. The gated signal is then smoothed upstream of demodulating the smoothed signal as viewed in a signal flow direction from a signal input to a processed signal output. The signal processing circuit system includes at least a signal gating section followed by a signal smoothing section followed by a demodulating section in that order and as viewed in the signal flow direction. Thus, smoothing takes place prior to demodulation.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: October 23, 2007
    Assignee: Atmel Germany GmbH
    Inventors: Leo Friesen, Reimund Rebel, Martin Siegle
  • Method and circuit system for suppressing noise in a signal processing circuit
    Publication number: 20050107058
    Abstract: Noise impulses are suppressed in a signal processing circuit by gating an input signal. The gated signal is then smoothed upstream of demodulating the smoothed signal as viewed in a signal flow direction from a signal input to a processed signal output. The signal processing circuit system includes at least a signal gating section followed by a signal smoothing section followed by a demodulating section in that order and as viewed in the signal flow direction. Thus, smoothing takes place prior to demodulation.
    Type: Application
    Filed: September 10, 2004
    Publication date: May 19, 2005
    Inventors: Leo Friesen, Reimund Rebel, Martin Siegle