Patents by Inventor Teppo Miettinen

Teppo Miettinen 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).

  • Waveguide to stripline transition with via forming an impedance matching fence
    Patent number: 6958662
    Abstract: The invention relates to a device for guiding electromagnetic waves from a wave guide (10), in particular a multi-band wave guide, to a transmission line (20), in particular a micro strip line, arranged at one end of the wave guide (10), comprising coupling means (30-1, . . . , 30-7) for mechanical fixation and impedance matching between the wave guide (10) and the transmission line (20). It is the object of the invention to improve such a structure in the way that manufacturing is made easier and less expensive than according to prior art. According to the present invention that object is solved in the way that the coupling means comprises at least one dielectric layer (30) being mechanically connected with the main plane of the transmission line, the geometric dimension of that at least one dielectric layer extending along the propagation direction of the electromagnetic waves being correlated with the center frequency of electromagnetic waves in order to achieve optimised impedance matching.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: October 25, 2005
    Assignee: Nokia Corporation
    Inventors: Olli Salmela, Markku Koivisto, Mikko Saarikoski, Kalle Jokio, Ali Nadir Arslan, Esa Kemppinen, Vesa Korhonen, Teppo Miettinen