Patents by Inventor Satoshi Arayashiki

Satoshi Arayashiki 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: 20220294395
    Abstract: A Doherty amplifier including a main amplifier and a peak amplifier is mounted on a package substrate. A low noise amplifier is further mounted on the package substrate. A transmit/receive switch switches in terms of time between a transmission connection state in which an output signal of the Doherty amplifier is supplied to an antenna and a reception connection state in which a signal received by the antenna is inputted to the low noise amplifier.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Inventors: Satoshi TANAKA, Kiichiro TAKENAKA, Satoshi ARAYASHIKI, Satoshi SAKURAI
  • Publication number: 20220271790
    Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
    Type: Application
    Filed: May 16, 2022
    Publication date: August 25, 2022
    Inventors: Satoshi SAKURAI, Satoshi ARAYASHIKI, Satoshi TANAKA, Kyoichi HIRAYAMA, Tomohito ITO, Kenta KURAHASHI
  • Publication number: 20220200551
    Abstract: A power amplification device includes a first member in which a first circuit is formed, a second member in which a second circuit is formed, and a member-member connection conductor that electrically connects the first circuit and the second circuit to each other. The second member is mounted on the first member. The second circuit includes a first amplifier, which amplifies a radio frequency signal to output a first amplified signal. The first circuit includes a control circuit that controls an operation of the second circuit. At least part of a first termination circuit, which is connected to the first amplifier through the member-member connection conductor and which attenuates a harmonic wave component of the first amplified signal, is formed in the first member.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 23, 2022
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Mitsunori SAMATA, Satoshi ARAYASHIKI, Koshi HIMEDA, Masayuki AOIKE
  • Patent number: 11356064
    Abstract: A Doherty amplifier including a main amplifier and a peak amplifier is mounted on a package substrate. A low noise amplifier is further mounted on the package substrate. A transmit/receive switch switches in terms of time between a transmission connection state in which an output signal of the Doherty amplifier is supplied to an antenna and a reception connection state in which a signal received by the antenna is inputted to the low noise amplifier.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: June 7, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Tanaka, Kiichiro Takenaka, Satoshi Arayashiki, Satoshi Sakurai
  • Patent number: 11336324
    Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: May 17, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Sakurai, Satoshi Arayashiki, Satoshi Tanaka, Kyoichi Hirayama, Tomohito Ito, Kenta Kurahashi
  • Patent number: 11323081
    Abstract: A power amplifier circuit includes lower-stage and upper-stage differential amplifying pairs, a combiner, first and second inductors, and first and second capacitors. First and second signals are input into the lower-stage differential amplifying pair. The upper-stage differential amplifying pair outputs first and second amplified signals. The combiner combines the first and second amplified signals. The lower-stage differential amplifying pair includes first and second transistors. A supply voltage is supplied to the collectors of the first and second transistors. The first and second signals are supplied to the bases of the first and second transistors. The upper-stage differential amplifying pair includes third and fourth transistors. A supply voltage is supplied to the collectors of the third and fourth transistors. The emitters of the third and fourth transistors are grounded via the first and second inductors and are connected to the first and second transistors via the first and second capacitors.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: May 3, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Arayashiki, Kazuo Watanabe, Satoshi Tanaka
  • Publication number: 20220109411
    Abstract: A semiconductor devices comprises a first member including a first circuit partially formed by an elemental semiconductor element at a surface layer, a first conductive raised portion at the first member, and a second member smaller than the first member in plan view joined to the first member. The second member includes a second circuit partially formed by a compound semiconductor element. A second conductive raised portion is at the second member. A power amplifier includes a first-stage amplifier circuit included in the first or second circuit and a second-stage amplifier circuit included in the second circuit. The first circuit includes a first switch for inputting to the first-stage amplifier circuit a radio-frequency signal inputted to a selected contact, a control circuit to control the first- and second-stage amplifier circuits, and a second switch for outputting from a selected contact a radio-frequency signal outputted by the second-stage amplifier circuit.
    Type: Application
    Filed: September 30, 2021
    Publication date: April 7, 2022
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Shunji YOSHIMI, Yuji TAKEMATSU, Yukiya YAMAGUCHI, Takanori UEJIMA, Satoshi GOTO, Satoshi ARAYASHIKI
  • Publication number: 20220108936
    Abstract: In a semiconductor module, a first conductive portion is raised on a lower surface of a first member to which a second member including a semiconductor element and being smaller than the first member in plan view is joined. A second conductive portion is raised at the second member in the same direction as the first conductive portion. The first and second members are mounted on a module substrate with the interposed first and second conductive portions. A sealing material is disposed on a mounting surface of the module substrate, while covering at least an area of the first member. The sealing material has a top surface facing in the same direction as the top surface of the first member and side surfaces connected to its top surface. A metal film is disposed on the top and side surfaces of the sealing material and side surfaces of the module substrate.
    Type: Application
    Filed: October 5, 2021
    Publication date: April 7, 2022
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Shunji YOSHIMI, Yuji TAKEMATSU, Yukiya YAMAGUCHI, Takanori UEJIMA, Satoshi GOTO, Satoshi ARAYASHIKI
  • Publication number: 20220021358
    Abstract: A power amplifier circuit includes a first transistor having a first terminal to which a first signal inputs, a second transistor having a first terminal to which the first signal inputs, a first resistor having a first end to which a first bias current is supplied and a second end electrically connected to the first terminal of the first transistor, a second resistor having a first end to which a second bias current is supplied and a second end electrically connected to the first terminal of the second transistor, and a third resistor having a first end connected to the first end of the first resistor and a second end connected to the first end of the second resistor.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Makoto ITOU, Satoshi ARAYASHIKI, Satoshi GOTO
  • Publication number: 20210376799
    Abstract: A control circuit is configured to control a Doherty amplifier including a carrier amplifier and a peak amplifier. The control circuit includes a resistor having a resistance value that is irreversibly adjustable. The resistor is configured to determine, based on the resistance value, a bias of the peak amplifier. The control circuit controls a Doherty amplifier.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 2, 2021
    Inventors: Satoshi TANAKA, Fumio HARIMA, Satoshi ARAYASHIKI
  • Patent number: 11190138
    Abstract: A power amplifier circuit includes a first transistor; a first bias circuit that supplies a first bias current or voltage; a capacitor; a first inductor; a second inductor; a second transistor; a second bias circuit that supplies a second bias current or voltage; a third inductor; a third transistor; a third bias circuit that supplies a third bias current or voltage; and a fourth inductor.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 30, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Satoshi Tanaka, Kazuo Watanabe, Satoshi Arayashiki
  • Publication number: 20210336592
    Abstract: A power amplifier circuit includes a first amplifier circuit configured to amplify a first signal of a first frequency band and output a first amplified signal having a first power, a second amplifier circuit configured to amplify a second signal of the first frequency band or a second frequency band different from the first frequency band and output a second amplified signal having a second power different from the first power, and a first variable adjustment circuit disposed between the second amplifier circuit and a first circuit subsequent to the second amplifier circuit, the first variable adjustment circuit being configured to be capable of adjusting a first impedance of the first circuit seen from the second amplifier circuit.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Inventors: Satoshi ARAYASHIKI, Satoshi TANAKA, Fumio HARIMA, Satoshi GOTO
  • Patent number: 11114982
    Abstract: A power amplifier circuit includes an amplifier transistor having a first terminal supplied with a power supply voltage that changes in accordance with an amplitude level of an input signal, and a second terminal supplied with the input signal and a bias current, an amplified signal obtained by amplifying the input signal being outputted from the first terminal, a bias circuit that outputs the bias current from an output terminal thereof in accordance with a reference current supplied to an input terminal thereof, and a regulation circuit that generates a regulation current for regulating the bias current in accordance with a change in the power supply voltage. The regulation current increases with an increase in the power supply voltage, and decreases with a decrease in the power supply voltage. The regulation circuit extracts the regulation current from at least one of the reference current or the bias current.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: September 7, 2021
    Assignee: MURATA MANUFACTURING CO. , LTD.
    Inventors: Satoshi Tanaka, Kazuo Watanabe, Satoshi Arayashiki
  • Publication number: 20210273611
    Abstract: A power amplifier circuit includes a first transistor having an emitter electrically connected to a common potential, a base to which a first high-frequency signal is input, and a collector from which a third high-frequency signal is output; a second transistor having an emitter electrically connected to the common potential, a base to which a second high-frequency signal is input, and a collector from which a fourth high-frequency signal is output; a first capacitance circuit electrically connected between the collector of the second transistor and the base of the first transistor; and a second capacitance circuit electrically connected between the collector of the first transistor and the base of the second transistor.
    Type: Application
    Filed: May 18, 2021
    Publication date: September 2, 2021
    Inventors: Satoshi TANAKA, Satoshi ARAYASHIKI, Satoshi GOTO, Yusuke TANAKA
  • Patent number: 11088720
    Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 10, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Sakurai, Satoshi Arayashiki, Satoshi Tanaka, Kyoichi Hirayama, Tomohito Ito, Kenta Kurahashi
  • Publication number: 20210234519
    Abstract: A power amplifier circuit includes a lower transistor having a first terminal, a second terminal connected to ground, and a third terminal, wherein a first power supply voltage is supplied to the first terminal, and an input signal is supplied to the third terminal; a first capacitor; an upper transistor having a first terminal, a second terminal connected to the first terminal of the lower transistor via the first capacitor, and a third terminal, wherein a second power supply voltage is supplied to the first terminal, an amplified signal is outputted to an output terminal from the first terminal, and a driving voltage is supplied to the third terminal; a first inductor that connects the second terminal of the upper transistor to ground; a voltage regulator circuit; and at least one termination circuit that short-circuits an even-order harmonic or odd-order harmonic of the amplified signal to ground potential.
    Type: Application
    Filed: March 22, 2021
    Publication date: July 29, 2021
    Inventors: Satoshi TANAKA, Kazuo WATANABE, Yusuke TANAKA, Satoshi ARAYASHIKI
  • Publication number: 20210211106
    Abstract: Provided is a power amplification module that includes: a first transistor, a first signal being inputted to a base thereof; a second transistor, the first signal being inputted to a base thereof and a collector thereof being connected to a collector of the first transistor; a first resistor, a first bias current being supplied to one end thereof and another end thereof being connected to the base of the first transistor; a second resistor, one end thereof being connected to the one end of the first resistor and another end thereof being connected to the base of the second transistor; and a third resistor, a second bias current being supplied to one end thereof and another end thereof being connected to the base of the second transistor.
    Type: Application
    Filed: March 24, 2021
    Publication date: July 8, 2021
    Inventors: Satoshi ARAYASHIKI, Satoshi GOTO, Satoshi TANAKA, Yasuhisa YAMAMOTO
  • Publication number: 20210194433
    Abstract: A power amplifier circuit includes a first amplifier that amplifies an input signal and outputs an output signal; a second amplifier that, in accordance with a control signal, amplifies a signal corresponding to the input signal, generates a signal having an opposite phase to that of the output signal, and adds the signal to the output signal; and a control circuit that supplies the control signal to the second amplifier. The control circuit outputs the control signal so that during operation of the power amplifier circuit in a first power mode, a gain of the second amplifier is not less than zero and less than a predetermined level and during operation in a second power mode lower than the first power mode in output power level, a gain of the second amplifier is not less than the predetermined level and less than a gain of the first amplifier.
    Type: Application
    Filed: March 9, 2021
    Publication date: June 24, 2021
    Inventors: Satoshi TANAKA, Satoshi ARAYASHIKI, Kazuo WATANABE
  • Patent number: 11043918
    Abstract: A power amplifier circuit includes a first transistor having an emitter electrically connected to a common potential, a base to which a first high-frequency signal is input, and a collector from which a third high-frequency signal is output; a second transistor having an emitter electrically connected to the common potential, a base to which a second high-frequency signal is input, and a collector from which a fourth high-frequency signal is output; a first capacitance circuit electrically connected between the collector of the second transistor and the base of the first transistor; and a second capacitance circuit electrically connected between the collector of the first transistor and the base of the second transistor.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: June 22, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Tanaka, Satoshi Arayashiki, Satoshi Goto, Yusuke Tanaka
  • Publication number: 20210135630
    Abstract: A power amplifier circuit includes a first power supply terminal electrically connected to a first power amplifier; a second power supply terminal electrically connected to a second power amplifier subsequent to the first power amplifier; a first external power supply line configured to electrically connect a power supply circuit configured to output a power supply potential corresponding to an amplitude level of a high-frequency input signal and the first power supply terminal; and a second external power supply line configured to electrically connect the power supply circuit and the second power supply terminal. An inductance value of the first external power supply line is higher than an inductance value of the second external power supply line.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Inventors: Satoshi TANAKA, Satoshi ARAYASHIKI, Kenji MUKAI