Patents by Inventor Mikiharu Oooka

Mikiharu Oooka 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).

  • Microwave amplifying circuit, microwave amplifying device, and distortion compensation circuit
    Publication number: 20020027477
    Abstract: A microwave amplifying circuit 1 has transistors 6, 8, and 10 and circuit sections 12, 14, 16, and 18. The circuit section 14 has one terminal electrically connected to a first current terminal of the transistor 6 and another terminal electrically connected to a control terminal of the transistor. The microwave amplifying circuit includes an impedance part 20a for supplying variable impedance between the terminals. The circuit section 16 has one terminal electrically connected to a first current terminal of the transistor 8 and another terminal electrically connected to a control terminal of the transistor 10. The circuit section 16 includes an impedance part 20b for providing variable impedance between the terminals.
    Type: Application
    Filed: June 8, 2001
    Publication date: March 7, 2002
    Inventors: Nobuhiro Kuwata, Kenji Kotani, Mikiharu Oooka, Ken-ichiro Matsuzaki, Hiroaki Sano