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).
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Patent number: 11303249Abstract: 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: GrantFiled: September 8, 2020Date of Patent: April 12, 2022Assignee: Sumitomo Electric Device Innovations, Inc.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Publication number: 20200403577Abstract: 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: ApplicationFiled: September 8, 2020Publication date: December 24, 2020Applicant: Sumitomo Electric Device Innovations, Inc.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Publication number: 20200321918Abstract: 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: ApplicationFiled: March 30, 2020Publication date: October 8, 2020Inventor: Andrey GREBENNIKOV
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Patent number: 10797653Abstract: 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: GrantFiled: January 31, 2019Date of Patent: October 6, 2020Assignee: Sumitomo Electric Device Innovations, Inc.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Patent number: 10601375Abstract: 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: GrantFiled: October 2, 2018Date of Patent: March 24, 2020Assignee: SUMITOMO ELECTRONIC DEVICES INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Patent number: 10432147Abstract: 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: GrantFiled: March 1, 2018Date of Patent: October 1, 2019Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Patent number: 10418947Abstract: 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: GrantFiled: March 1, 2018Date of Patent: September 17, 2019Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Publication number: 20190238096Abstract: 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: ApplicationFiled: January 31, 2019Publication date: August 1, 2019Inventors: Andrey GREBENNIKOV, James WONG, Naoki WATANABE
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Publication number: 20190103842Abstract: 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: ApplicationFiled: October 2, 2018Publication date: April 4, 2019Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Patent number: 10187015Abstract: 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: GrantFiled: November 30, 2017Date of Patent: January 22, 2019Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Publication number: 20180254749Abstract: 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: ApplicationFiled: March 1, 2018Publication date: September 6, 2018Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC .Inventors: Andrey GREBENNIKOV, James WONG, Naoki WATANABE
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Publication number: 20180254748Abstract: 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: ApplicationFiled: March 1, 2018Publication date: September 6, 2018Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Publication number: 20180152149Abstract: 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: ApplicationFiled: November 30, 2017Publication date: May 31, 2018Inventors: Andrey Grebennikov, James Wong, Naoki Watanabe
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Patent number: 8471756Abstract: 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: GrantFiled: May 21, 2012Date of Patent: June 25, 2013Assignee: Infineon Technologies AGInventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
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Publication number: 20120229330Abstract: 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: ApplicationFiled: May 21, 2012Publication date: September 13, 2012Applicant: INFINEON TECHNOLOGIES AGInventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
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Patent number: 8188904Abstract: 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: GrantFiled: October 9, 2008Date of Patent: May 29, 2012Assignee: Infineon Technologies AGInventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
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Patent number: 7940120Abstract: 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: GrantFiled: August 26, 2009Date of Patent: May 10, 2011Assignee: Alcatel LucentInventors: Andrei Grebennikov, Florian Pivit
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Patent number: 7853290Abstract: 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: GrantFiled: October 29, 2007Date of Patent: December 14, 2010Assignee: Infineon Technologies AGInventors: Grigory Itkin, Andrei Grebennikov
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Publication number: 20100093293Abstract: 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: ApplicationFiled: October 9, 2008Publication date: April 15, 2010Inventors: Andrei Grebennikov, Guenter Haider, Hans-Peter Forstner
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Publication number: 20100060353Abstract: 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: ApplicationFiled: August 26, 2009Publication date: March 11, 2010Inventors: Andrei Grebennikov, Florian Pivit