Patents by Inventor Andrei Grebennikov

Andrei Grebennikov 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).

  • Patent number: 11303249
    Abstract: A consecutive Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier, a power splitter, a peak amplifier, and a phase compensator. The carrier amplifier receives a radio frequency signal with interposing any signal splitters. The power splitter splits an output of the carrier amplifier into first and second split signals. The phase compensator transfers the second split signal to the peak amplifier. The first split signal is combined with the output of the peak amplifier.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: April 12, 2022
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Publication number: 20200403577
    Abstract: A consecutive Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier, a power splitter, a peak amplifier, and a phase compensator. The carrier amplifier receives a radio frequency signal with interposing any signal splitters. The power splitter splits an output of the carrier amplifier into first and second split signals. The phase compensator transfers the second split signal to the peak amplifier. The first split signal is combined with the output of the peak amplifier.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Applicant: Sumitomo Electric Device Innovations, Inc.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Publication number: 20200321918
    Abstract: An integrated Doherty amplifier based on a multichip module structure is disclosed. The amplifier comprises an input integrated passive die including a Wilkinson power divider, a phase compensation circuit and input matching circuits for the main and peaking amplifiers based on lumped components, the active GaN HEMT die including the main device, a peaking device and a bondwire inductor connected between the drain terminals of the main and peaking devices, and an output matching network including a two-section matching circuit with low-pass and high-pass matching section operating as an impedance-transforming bandpass filter and a dc-feed power supply circuit based on lumped components and microstrip lines.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 8, 2020
    Inventor: Andrey GREBENNIKOV
  • Patent number: 10797653
    Abstract: A consecutive Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier, a power splitter, a peak amplifier, and a phase compensator. The carrier amplifier receives a radio frequency signal with interposing any signal splitters. The power splitter splits an output of the carrier amplifier into first and second split signals. The phase compensator transfers the second split signal to the peak amplifier. The first split signal is combined with the output of the peak amplifier.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 6, 2020
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Patent number: 10601375
    Abstract: A 3-stage Doherty amplifier that includes a three-way splitter, a carrier amplifier, first to second peak amplifiers, and an output combiner is disclosed. The output combiner includes first to fifth transmission lines with a ?/4 electrical length except for that in a downstream of the second peak amplifier, which provides a ?/2 electrical length. By dividing the latter transmission line into two parts each having a ?/4 length, and setting impedance thereof in a relation of (Z1/Z3)2×(ZL/3), the output impedance of the respective amplifiers are common to each other to be Zo, where Z1, Z3, and ZL are impedance of the transmission liens in respective downstream sides of the amplifiers, that of the transmission line provided in the output, and the load impedance, respectively.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO ELECTRONIC DEVICES INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Patent number: 10432147
    Abstract: An inverted three-stage Doherty amplifier is disclosed. The amplifier provides an input power divider, a carrier amplifier, two peak amplifiers, and an output combiner. The output combiner includes five quarter-wavelength (?/4) lines, three of which correspond to the three amplifiers, one of which combines an output of the carrier amplifier with an output of the first peak amplifier, and the last of which combines the combined output of the carrier amplifier and the first peak amplifier with an output of the second peak amplifier. The five ?/4 lines have respective impedances to optionally adjust the output impedance of the respective amplifiers.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 1, 2019
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Patent number: 10418947
    Abstract: An N-way Doherty Amplifier (N>3) is disclosed. The Doherty Amplifier includes an N-way power divider that evenly divides an input signal, a delay adjustor, one carrier amplifier and N?1 peak amplifiers each including offset lines for converting amplifier output impedance thereof to be substantially short circuit when the amplifiers are turned off, and an output combiner including a common node. The carrier amplifier, the first peak amplifier, and the rest peak amplifiers are coupled with the common node directly, through one ?/4 line, and respective ?/4 lines connected in series to the common node, respectively. The delay adjustor makes up a number of ?/4 lines in respective paths.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 17, 2019
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Publication number: 20190238096
    Abstract: A consecutive Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier, a power splitter, a peak amplifier, and a phase compensator. The carrier amplifier receives a radio frequency signal with interposing any signal splitters. The power splitter splits an output of the carrier amplifier into first and second split signals. The phase compensator transfers the second split signal to the peak amplifier. The first split signal is combined with the output of the peak amplifier.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 1, 2019
    Inventors: Andrey GREBENNIKOV, James WONG, Naoki WATANABE
  • Publication number: 20190103842
    Abstract: A 3-stage Doherty amplifier that includes a three-way splitter, a carrier amplifier, first to second peak amplifiers, and an output combiner is disclosed. The output combiner includes first to fifth transmission lines with a ?/4 electrical length except for that in a downstream of the second peak amplifier, which provides a ?/2 electrical length. By dividing the latter transmission line into two parts each having a ?/4 length, and setting impedance thereof in a relation of (Z1/Z3)2×(ZL/3), the output impedance of the respective amplifiers are common to each other to be Z0, where Z1, Z3, and ZL are impedance of the transmission liens in respective downstream sides of the amplifiers, that of the transmission line provided in the output, and the load impedance, respectively.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 4, 2019
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Patent number: 10187015
    Abstract: An inverted symmetrical four-stage Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier and a plurality of peak amplifiers. Outputs of the carrier amplifier and the peak amplifiers are provided to the combining unit through the offset unit including offset transmission lines each connected with the carrier amplifier and the peak amplifiers. The offset transmission lines have characteristic impedance and electrical lengths equal to each other such that the impedance seeing the amplifiers at the ends of the offset transmission lines become substantially short-circuited.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 22, 2019
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Publication number: 20180254749
    Abstract: An N-way Doherty Amplifier (N>3) is disclosed. The Doherty Amplifier includes an N-way power divider that evenly divides an input signal, a delay adjustor, one carrier amplifier and N-1 peak amplifiers each including offset lines for converting output impedance thereof to be substantially short circuit when the amplifiers are turned off, and an output combiner including a common node. The carrier amplifier, the first peak amplifier, and the rest peak amplifiers are coupled with the common node directly, through one ?/4 line, and respective ?/4 lines connected in series to the common node, respectively. The delay adjustor makes up a number of ?/4 lines in respective paths.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC .
    Inventors: Andrey GREBENNIKOV, James WONG, Naoki WATANABE
  • Publication number: 20180254748
    Abstract: An inverted three-stage Doherty amplifier is disclosed. The amplifier provides an input power divider, a carrier amplifier, two peak amplifiers, and an output combiner. The output combiner includes five quarter-wavelength (?/4) lines, three of which correspond to three amplifiers, one of rest two ?/4 lines combines an output of the carrier amplifier with an output of the first peak amplifier, the last ?/4 line combines the combined output of the carrier amplifier and the first peak amplifier with an output of the second peak amplifier. The five ?/4 lines have respective impedance to optionally adjust output impedance of the respective amplifiers.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Publication number: 20180152149
    Abstract: An inverted symmetrical four-stage Doherty amplifier is disclosed. The Doherty amplifier includes a carrier amplifier and a plurality of peak amplifiers. Outputs of the carrier amplifier and the peak amplifiers are provided to the combining unit through the offset unit including offset transmission lines each connected with the carrier amplifier and the peak amplifiers. The offset transmission lines have characteristic impedance and electrical lengths equal to each other such that the impedance seeing the amplifiers at the ends of the offset transmission lines become substantially short-circuited.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 31, 2018
    Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
  • Patent number: 8471756
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 25, 2013
    Assignee: Infineon Technologies AG
    Inventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
  • Publication number: 20120229330
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Application
    Filed: May 21, 2012
    Publication date: September 13, 2012
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
  • Patent number: 8188904
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: May 29, 2012
    Assignee: Infineon Technologies AG
    Inventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
  • Patent number: 7940120
    Abstract: The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: May 10, 2011
    Assignee: Alcatel Lucent
    Inventors: Andrei Grebennikov, Florian Pivit
  • Patent number: 7853290
    Abstract: A transmitter arrangement includes a first amplifier arrangement and a second amplifier arrangement. The first amplifier arrangement includes a first amplification path and a second amplification path. The first amplification path is adapted to amplify signals comprising a data content according to a first communication standard. The second amplification path is adapted to amplify signals comprising a data content according to a second communication standard. The second amplifier arrangement further includes a first and second amplification path sharing at least one common amplifier stage that is adapted to amplify signals having a data content according at least to the second communication standard.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: December 14, 2010
    Assignee: Infineon Technologies AG
    Inventors: Grigory Itkin, Andrei Grebennikov
  • Publication number: 20100093293
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 15, 2010
    Inventors: Andrei Grebennikov, Guenter Haider, Hans-Peter Forstner
  • Publication number: 20100060353
    Abstract: The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 11, 2010
    Inventors: Andrei Grebennikov, Florian Pivit