Patents by Inventor Akihiro Ogisou

Akihiro Ogisou 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 oscillation circuit using a dielectric resonator
    Patent number: 6433646
    Abstract: In a microwave oscillation circuit using a dielectric resonator, a bias resistor for determining a bias voltage supplied to a base terminal of a transistor is located in the neighborhood of a connection point between a feedback circuit side stub for the dielectric resonator and the base terminal of the transistor. The bias resistor has a resistance which basically determines a bias voltage supplied to the base terminal of the transistor and which is enough to make high the impedance of a bias voltage supplying circuit including the bias resistor, viewed at the input terminal of the transistor. Thus, a stable oscillation can be maintained independently of variation in a load impedance.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: August 13, 2002
    Assignee: NEC Corporation
    Inventors: Yasushi Kose, Akihiro Ogisou
  • Microwave oscillation circuit using a dielectric resonator
    Publication number: 20010019293
    Abstract: In a microwave oscillation circuit using a dielectric resonator, a bias resistor for determining a bias voltage supplied to a base terminal of a transistor is located in the neighborhood of a connection point between a feedback circuit side stub for the dielectric resonator and the base terminal of the transistor. The bias resistor has a resistance which basically determines a bias voltage supplied to the base terminal of the transistor and which is enough to make high the impedance of a bias voltage supplying circuit including the bias resistor, viewed at the input terminal of the transistor. Thus, a stable oscillation can be maintained independently of variation in a load impedance.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 6, 2001
    Inventors: Yasushi Kose, Akihiro Ogisou