Patents by Inventor Andreas Brennemann

Andreas Brennemann 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).

  • Publication number: 20030218229
    Abstract: In a photosensitive semiconductor diode device (1), in particular, a PIN diode device (2) for converting optical signals into electronic signals, the semiconductor diode is provided with a lead for contacting the doped regions and for electroconductively connecting them to a following circuit (11), e.g., an electronic amplifier. To realize a matching between the semiconductor diode and the following circuit that is effective over a wide bandwidth by means of a passive matching circuit (10), the lead contains the matching circuit such that lead (4, 5) is constructed on at least part of its length (L) as a coplanar line or a microstrip line such that conductor width (S) and/or conductor spacing width (gap width W) varies along its length area (L) of the lead, with the characteristic impedance of this lead varying along the corresponding part of the line. A very high operating frequency and a low signal attenuation are thereby achieved, among other things.
    Type: Application
    Filed: April 8, 2003
    Publication date: November 27, 2003
    Inventors: Guido Janssen, Ralf M. Bertenburg, Michael Agethen, Dietmar Keiper, Andreas Brennemann, Peter Velling