Patents by Inventor Oki Maya

Oki Maya 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).

  • High-frequency power amplifier and communication apparatus
    Patent number: 7256653
    Abstract: A temperature compensation circuit 145 included in a collector voltage generation section 130a applies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl? (T) is applied to a collector terminal of a bipolar transistor 110 through a voltage regulator 140 and a choke inductor 170.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: August 14, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Oki Maya, Kazuki Tateoka
  • High-frequency power amplifier and communication apparatus
    Publication number: 20050208909
    Abstract: A temperature compensation circuit 145 included in a collector voltage generation section 130a applies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl? (T) is applied to a collector terminal of a bipolar transistor 110 through a voltage regulator 140 and a choke inductor 170.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 22, 2005
    Inventors: Oki Maya, Kazuki Tateoka