Patents by Inventor Bertil Hansson

Bertil Hansson 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 having an AC-coupling between fundamental frequency ground points
    Patent number: 6903614
    Abstract: A method of locking a first differential oscillator with a second differential oscillator and a circuit and an arrangement therefor. The method comprises AC coupling a fundamental frequency AC-ground of the first differential oscillator with a fundamental frequency AC-ground of the second differential oscillator.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: June 7, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Harald Jacobsson, Bertil Hansson
  • Oscillator
    Publication number: 20040150484
    Abstract: A method of locking a first differential oscillator with a second differential oscillator and a circuit and an arrangement therefore. The method comprises AC coupling a fundamental frequency AC-ground of the first differential oscillator with a fundamental frequency AC-ground of the second differential oscillator.
    Type: Application
    Filed: January 5, 2004
    Publication date: August 5, 2004
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Harald Jacobsson, Bertil Hansson
  • Micro-strip circuit for loss reduction
    Patent number: 6504109
    Abstract: A printed circuit (1) on a lossy substrate (2) has been provided whereby intermediate structures (11, 12, 17, 18) under the top layer strips (5) have been formed having a width being (d2) smaller than the width (w) of the strip. The intermediate structures (11, 12, 17, 18) are particular well suited for inductors (9) on silicon substrates and result in a considerable increase in the Q-factor of the inductor at microwave frequencies.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: January 7, 2003
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Omid Aval, Håkan Berg, Spartak Gevorgian, Bertil Hansson, Harald Jacobsson, Thomas Lewin
  • Balanced inductor
    Patent number: 6320491
    Abstract: A balanced inductor formed on lossy substrate material having adjacent strips leading current in opposite directions and being arranged in such a way that substrate currents relating to individual strips (1) induced in the lossy substrate (3) are balancing out one another leading to high Q-values. The inductor structure according to the invention can be implemented in MMIC devices using standard semiconductor substrates and do not require any special treatment of the substrate being needed.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: November 20, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Spartak Gevorgian, Bertil Hansson