Patents by Inventor Goran R. Karlsson

Goran R. Karlsson 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).

  • Monopulse feeder for transmitting and receiving radar signals within two mutually separated frequency bands
    Patent number: 4639731
    Abstract: A monopulse feeder for transmission and/or reception of two separate frequency bands, the X and Ka bands, comprises a mouth section (8) and a wave guide section (9) connected to comparator circuits (5 and 6, respectively) for each frequency band. The mouth section is formed with two rectangular pairs of openings (81a, 81b and 82a, 82b, respectively) of which one (82a, 82b) is of smaller dimensions than the other (81a, 81b), and is placed between the openings of the second pair (81a, 81b). The feeder is placed at the inner focal point of a two-band Cassegrain reflector system.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: January 27, 1987
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Goran R. Karlsson, John H. S. Karnevi