Patents by Inventor Svante Widell

Svante Widell 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).

  • Channel simulator for mobile systems
    Patent number: 6600926
    Abstract: A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a radio channel. The device includes two or more flexible delay modules, and each module is arranged to emulate a tap and a continuously varying tap attenuation can be attained to describe the variation of the radio channel over the time. The modules may be realized in SAW-technology, and continuously varying tap attenuation may be achieved by the utilization of PIN-diode attenuators.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: July 29, 2003
    Assignee: Telia AB
    Inventors: Svante Widell, Mats Olof Winroth
  • Channel simulator for mobile systems
    Patent number: RE40986
    Abstract: A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a radio channel. The device includes two or more flexible delay modules, and each module is arranged to emulate a tap and a continuously varying tap attenuation can be attained to describe the variation of the radio channel over the time. The modules may be realized in SAW-technology, and continuously varying tap attenuation may be achieved by the utilization of PIN-diode attenuators.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: November 17, 2009
    Inventors: Svante Widell, Mats Olof Winroth