Patents by Inventor Tomoyoshi Fukasawa

Tomoyoshi Fukasawa 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).

  • Microchip capacitor and thin film resistor as circuit elements in internal impedance matching circuit of microwave transistor
    Patent number: 5519233
    Abstract: A microchip capacitor used as a circuit element in internal impedance matching circuits of microwave transistors is disclosed. A thin film resistor is used to make interconnection between two first metallized patterns in a paired electrode structure, and a pair of microstrip lines are used to make interconnection between the two first metallized patterns and the second metallized pattern. The thin film resistor and the microstrip lines form a Wilkinson type synthetic circuit wherein a signal flowing in the thin film resistor and a signal flowing in the microstrip lines cancel each other. An isolation between the first and second metallized patterns is improved.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: May 21, 1996
    Assignee: NEC Corporation
    Inventor: Tomoyoshi Fukasawa