Patents by Inventor Hirotake IGARASHI

Hirotake IGARASHI 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).

  • POWER AMPLIFIER MODULE AND RADIO FREQUENCY MODULE
    Publication number: 20180302047
    Abstract: A power amplifier module includes a plurality of power amplifiers and at least one switch that switches between power supply sources such that each of the plurality of power amplifiers is supplied with one of a power supply voltage according to an envelope tracking scheme or a power supply voltage according to an average power tracking scheme.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 18, 2018
    Inventors: Hirotake IGARASHI, Takayuki SHINOZAKI, Satoshi TANAKA