Patents by Inventor Tapio Lehtonen

Tapio Lehtonen 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 Darlington nodes
    Patent number: 7701303
    Abstract: A voltage-controlled oscillator has a resonance tank core providing a voltage-dependent resonance frequency, switching units connected with the resonance tank core for changing output voltage levels of the oscillator with a frequency corresponding to the resonance frequency of the resonance tank core. At least two of the switching units have pairs of Darlington transistors which are connected via a Darlington node. Output terminals are used for outputting the output voltage levels.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: April 20, 2010
    Assignee: Infineon Technologies AG
    Inventors: Nikolay Tchamov, Pekko Ruippo, Tapio Lehtonen
  • Oscillator with Darlington Nodes
    Publication number: 20080157891
    Abstract: A voltage-controlled oscillator has a resonance tank core providing a voltage-dependent resonance frequency, switching units connected with the resonance tank core for changing output voltage levels of the oscillator with a frequency corresponding to the resonance frequency of the resonance tank core. At least two of the switching units have pairs of Darlington transistors which are connected via a Darlington node. Output terminals are used for outputting the output voltage levels.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Inventors: Nikolay Tchamov, Pekko Ruippo, Tapio Lehtonen