Patents by Inventor Steffen W Hahn

Steffen W Hahn 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).

  • Oscillator with improved magnetic coupling rejection
    Patent number: 6512422
    Abstract: The present invention provides an oscillator such as a voltage controlled oscillator (VCO) that can supply more stable frequency signals in the presence of strong magnetic coupling caused by external magnetic perturbations. According to one embodiment of the invention, an oscillator is presented and comprises an amplifier and an LC circuit connected to the amplifier. In the LC circuit, a first pair of inductors includes first and second inductors and a second pair of inductors includes third and fourth inductors. The first and second pairs are arranged such that the first and fourth inductors are on a first side and the second and third inductors are on a second side. In one arrangement, the inductors are positioned such that a center between the first and second inductors substantially overlap a center between the third and fourth inductors.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 28, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Yves Dufour, Steffen W Hahn
  • Oscillator with improved magnetic coupling rejection
    Publication number: 20020140516
    Abstract: The present invention provides an oscillator such as a voltage controlled oscillator (VCO) that can supply more stable frequency signals in the presence of strong magnetic coupling caused by external magnetic perturbations. According to one embodiment of the invention, an oscillator is presented and comprises an amplifier and an LC circuit connected to the amplifier. In the LC circuit, a first pair of inductors includes first and second inductors and a second pair of inductors includes third and fourth inductors. The first and second pairs are arranged such that the first and fourth inductors are on a first side and the second and third inductors are on a second side. In one arrangement, the inductors are positioned such that a center between the first and second inductors substantially overlap a center between the third and fourth inductors.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 3, 2002
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Yves Dufour, Steffen W. Hahn