Patents by Inventor Sven Erik Mattisson

Sven Erik Mattisson 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).

  • Patent number: 6973290
    Abstract: A digital radio transceiver integrated circuit includes MOS transistors with normal threshold voltages in the digital circuits, and with reduced threshold voltages in at least some of the analog RF components. This allows the transceiver to be reduced in size and weight, without requiring performance to be compromised.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: December 6, 2005
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andrej Litwin, Sven Erik Mattisson
  • Publication number: 20030211833
    Abstract: A digital radio transceiver integrated circuit includes MOS transistors with normal threshold voltages in the digital circuits, and with reduced threshold voltages in at least some of the analog RF components. This allows the transceiver to be reduced in size and weight, without requiring performance to be compromised.
    Type: Application
    Filed: June 13, 2003
    Publication date: November 13, 2003
    Inventors: Andrej Litwin, Sven Erik Mattisson
  • Patent number: 6611680
    Abstract: A digital radio transceiver integrated circuit includes MOS transistors with normal threshold voltages in the digital circuits, and with reduced threshold voltages in at least some of the analog RF components. This allows the transceiver to be reduced in size and weight, without requiring performance to be compromised.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: August 26, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andrej Litwin, Sven Erik Mattisson
  • Publication number: 20030013416
    Abstract: A digital radio transceiver integrated circuit includes MOS transistors with normal threshold voltages in the digital circuits, and with reduced threshold voltages in at least some of the analog RF components. This allows the transceiver to be reduced in size and weight, without requiring performance to be compromised.
    Type: Application
    Filed: February 5, 1998
    Publication date: January 16, 2003
    Inventors: ANDREJ LITWIN, SVEN ERIK MATTISSON
  • Patent number: 6184814
    Abstract: The present invention relates to the generation of a time mean value-free binary signal (O) from an input signal (IN). The device (10) comprises a feed-back loop adjusting the pulse ratio of the output signal by comparing its mean value to the mean value of a time mean value-free reference signal (J) and feeding-back the difference between said two mean values. The mean values are approximated by low pass filtering the binary signal (O) and the reference signal (J) with two filters (8, 7). If the filters (8, 7) are non-linear, the mean values of the filtered signals (S, FJ) can deviate from the mean values of the reference signal (O) and the reference signal (J). By constructing the filters (8, 7) as regards non-linearities, to be equal, the aforementioned discrepancy will be compensated, since the signals will deviate to the same degree from their theoretical values, when time mean value free.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: February 6, 2001
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Sven Erik Mattisson
  • Patent number: 6100770
    Abstract: An electrical device having a voltage dependent capacitance is provided comprising a first region of a semiconductor material, and a second region and a third region of a semiconductor material formed in the first region, the second and third regions being separated by a separation region, and an electrically insulating layer formed on the first region at least at a region corresponding to the separation region, and a substantially conductive element formed on the insulating layer at least at a region corresponding to the separation region such that the insulating layer electrically insulates the substantially conductive element from the first, second and third regions, and a first electrode connected to the substantially conductive element, and a second electrode and third electrode are connected to the second and third regions. A method of manufacturing the device is also disclosed.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: August 8, 2000
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andrej Litwin, Sven Erik Mattisson