Patents by Inventor Lars Aspemyr

Lars Aspemyr 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).

  • Automatically tuned tail filter
    Patent number: 7688153
    Abstract: The present invention relates to an oscillating circuit arrangement having a resonating arrangement with a first resonance frequency (coo) comprising a voltage controlled oscillator arrangement. It further comprises a tunable filter arrangement connected to the source node of said voltage controlled oscillator (VCO) arrangement. Said filter arrangement particularly comprises an equivalent current source resonating at a second resonance frequency c?f, the second resonance frequency being a multiple n, n=1 or 2 of said first resonance frequency (?>o), n being equal to the minimum number of switch transistors required for oscillation of said VCO arrangement. The filter arrangement particularly comprises an inductor connected in parallel with a capacitor, said capacitor being adapted to be tunable such that the phase noise of the resonating arrangement can be minimized through tuning of the filter arrangement.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 30, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Harald Jacobsson, Lars Aspemyr
  • Oscillator circuit
    Patent number: 7679465
    Abstract: The present invention relates to an oscillator circuit having a resonant element, an active element, a feedback loop, and an additional loop comprising a phase shifting element.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: March 16, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Lars Aspemyr, Harald Jacobsson
  • Oscillator Circuit
    Publication number: 20090128245
    Abstract: The present invention relates to an oscillator circuit having a resonant element, an active element, a feedback loop, and an additional loop comprising a phase shifting element.
    Type: Application
    Filed: September 27, 2005
    Publication date: May 21, 2009
    Inventors: Lars Aspemyr, Harald Jacobsson
  • Automatically Tuned Tail Filter
    Publication number: 20080266005
    Abstract: The present invention relates to an oscillating circuit arrangement having a resonating arrangement with a first resonance frequency (coo) comprising a voltage controlled oscillator arrangement. It further comprises a tunable filter arrangement connected to the source node of said voltage controlled oscillator (VCO) arrangement. Said filter arrangement particularly comprises an equivalent current source resonating at a second resonance frequency c?f, the second resonance frequency being a multiple n, n=1 or 2 of said first resonance frequency (?>o), n being equal to the minimum number of switch transistors required for oscillation of said VCO arrangement. The filter arrangement particularly comprises an inductor connected in parallel with a capacitor, said capacitor being adapted to be tunable such that the phase noise of the resonating arrangement can be minimized through tuning of the filter arrangement.
    Type: Application
    Filed: October 5, 2005
    Publication date: October 30, 2008
    Inventors: Harald Jacobsson, Lars Aspemyr