Patents by Inventor Gerardus J. N. Doodeman

Gerardus J. N. Doodeman 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).

  • Zero-IF-converter with RC filters
    Patent number: 6522223
    Abstract: A zero-IF-converter, particularly for digital satellite receivers, comprising a thin-film component including at least two RC filters each including a resistor and a capacitor which each comprise a lower electrode, an upper electrode and a dielectric material, said RC filters being arranged on a common substrate, is characterized by a constant amplitude and phase relationship between the base band signals I and Q.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: February 18, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hans Peter Löbl, Paul H. M. Van Oppen, Theodoor G. S. M. Rijks, Mareike K. Klee, Gerardus J. N. Doodeman