Patents by Inventor Paulo Augusto Dal Fabbro

Paulo Augusto Dal Fabbro 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).

  • Tunable Impedance Matching Circuit
    Publication number: 20100164645
    Abstract: The tunable impedance circuit comprises capacitors C1 and C2, an inductor L1, and an inductor L2 magnetically coupled with the inductor L1. The control current Icontrol with variable phase and amplitude from the control circuit 13 flows in the inductor L2. The impedance of the inductor L1 is changed by changing the phase and amplitude of the control current Icontrol. The output impedance is set to an optimum level by setting an effective inductance and an effective quality factor of the tunable impedance circuit 12a to be optimum by means of the phase and amplitude of the control current Icontrol relative to output current IRF of RF PA 11.
    Type: Application
    Filed: September 14, 2007
    Publication date: July 1, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Kazuhiko Kobayashi, Yuu Watanabe, Paulo Augusto Dal Fabbro, Maher Kayal