Patents by Inventor Bjorn Lundqvist

Bjorn Lundqvist 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).

  • Local oscillator having plural oscillators facilitating channel switching
    Patent number: 5697089
    Abstract: A device for generating a first signal and a second signal in a receiver for reception of a number of radio frequency signals. The first signal is mixed in a first mixer with the received radio frequency signals in order to generate an intermediate frequency signal which is subsequently mixed with the second signal in a second mixer. A first oscillator generates a signal which, after frequency multiplication in a frequency multiplier, is the first signal, the frequency of which can be changed in a number of frequency steps. A second oscillator generates the second signal, the frequency of which also can be changed in a number of frequency steps. The magnitude of the frequency steps by which the first signal can be changed is a multiple of the frequency steps by which the second signal can be changed.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: December 9, 1997
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Bjorn Lundqvist, Bjorn Lofter