Patents by Inventor Yuta Araki

Yuta Araki 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).

  • Publication number: 20060033563
    Abstract: A power amplifier includes amplifier elements to amplify input signals of different frequencies. The amplifier also includes a power supply circuit that includes a common power supply path including an end connected to a power supply input terminal connected to a DC power supply. The amplifier further includes individual power supply paths each including an end connected to the other end of the common power supply path, and the other end connected to the main electrode of a corresponding one of the amplifier elements. The individual power supply paths have different impedances.
    Type: Application
    Filed: October 26, 2005
    Publication date: February 16, 2006
    Inventors: Yuta Araki, Hiroyuki Kayano, Keiichi Yamaguchi
  • Publication number: 20060033564
    Abstract: A power amplifier includes amplifier elements to amplify input signals of different frequencies. The amplifier also includes a power supply circuit that includes a common power supply path including an end connected to a power supply input terminal connected to a DC power supply. The amplifier further includes individual power supply paths each including an end connected to the other end of the common power supply path, and the other end connected to the main electrode of a corresponding one of the amplifier elements. The individual power supply paths have different impedances.
    Type: Application
    Filed: October 26, 2005
    Publication date: February 16, 2006
    Inventors: Yuta Araki, Hiroyuki Kayano, Keiichi Yamaguchi
  • Publication number: 20050243490
    Abstract: A semiconductor integrated circuit device according to the present invention includes: a sample circuit in which through current to be monitored flows during switching between transistors; a non-overlap circuit for outputting an output signal for the switching in the sample circuit; a current detector for detecting the through current flowing during the switching; and a current comparator in which a reference current value with respect to the through current has been set and which compares a current value detected by the current detector with the reference current value and outputs a result of the comparison to the non-overlap circuit.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 3, 2005
    Inventors: Yuta Araki, Isao Tanaka, Masaya Sumita
  • Publication number: 20040239420
    Abstract: A power amplifier includes amplifier elements to amplify input signals of different frequencies. The amplifier also includes a power supply circuit that includes a common power supply path including an end connected to a power supply input terminal connected to a DC power supply. The amplifier further includes individual power supply paths each including an end connected to the other end of the common power supply path, and the other end connected to the main electrode of a corresponding one of the amplifier elements. The individual power supply paths have different impedances.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 2, 2004
    Inventors: Yuta Araki, Hiroyuki Kayano, Keiichi Yamaguchi
  • Publication number: 20040192237
    Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 30, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroyuki Kayano, Yuta Araki, Yuuji Ohtsuka