Patents by Inventor Charlotta Hedenäs

Charlotta Hedenäs 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).

  • Method of detecting the frequency of an input clock signal of an integrated circuit and integrated circuit
    Patent number: 7737730
    Abstract: An integrated circuit includes a first switched capacitor element and a second switched capacitor element, which are coupled to form a bridge circuit, the first switched capacitor element being located in a first branch of the bridge circuit and the second switched capacitor element being located in a second branch of the bridge circuit. A detector circuit is coupled to the first branch and to the second branch of the bridge circuit. Switching signals of the first switched capacitor element and of the second switched capacitor element are generated on the basis of an input clock signal of the integrated circuit.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: June 15, 2010
    Assignee: Infineon Technologies AG
    Inventors: Mikael Hjelm, Charlotta Hedenaes, Bjoern Wiklund
  • Method of Detecting the Frequency of an Input Clock Signal of an Integrated Circuit and Integrated Circuit
    Publication number: 20090058468
    Abstract: An integrated circuit includes a first switched capacitor element and a second switched capacitor element, which are coupled to form a bridge circuit, the first switched capacitor element being located in a first branch of the bridge circuit and the second switched capacitor element being located in a second branch of the bridge circuit. A detector circuit is coupled to the first branch and to the second branch of the bridge circuit. Switching signals of the first switched capacitor element and of the second switched capacitor element are generated on the basis of an input clock signal of the integrated circuit.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: Mikael Hjelm, Charlotta Hedenaes, Bjoern Wiklund
  • Multilayer balun transformer structure
    Patent number: 6603383
    Abstract: The present invention relates to a multilayer, balanced-unbalanced signal transformer (20) comprising a first coil and a second coil providing at least one balanced signal port at one side of the balun transformer and an unbalanced signal port at another side of the balun transformer. The (at least one) balanced signal port is provided by a first balanced signal terminal (23b) and a second balanced signal terminal (24b) formed by the ends of the first coil. The unbalanced (single-ended) signal port is provided by a first unbalanced signal terminal (21u) and a second unbalanced signal terminal (22u). It comprises a discrete component formed on a low resistivity, e.g.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: August 5, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Spartak Gevorgian, Charlotta Hedenäs, Harald Jacobsson, Håkan Berg