Patents by Inventor Tomas Sehm

Tomas Sehm 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).

  • Planar antenna design
    Patent number: 5926147
    Abstract: An antenna design includes a plurality of radiating elements which radiate electro-magnetic energy, and feeders which feed the electromagnetic energy to the radiating elements. The feeders have a supply network substantially at the same level in the antenna thickness direction. In order to achieve a small antenna with adequate properties for radio link usage, the radiating elements are arranged next to the supply network in the thickness direction and include box horn antennas which have a step, characteristic of a box horn, in the plane of the magnetic field.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: July 20, 1999
    Assignee: Nokia Telecommunications Oy
    Inventors: Tomas Sehm, Arto Lehto, Antti Raisanen