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: 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
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Patent number: 7538609Abstract: An amplifier includes a signal input, a first, second and third amplification path. A coupling element having a first and a second output terminal is coupled to respective input terminals of the first and second amplification paths, and is coupled with a third terminal to an input terminal of the third amplification path. In a first mode of operation the coupling element provides a signal at the first and second output terminals, wherein the signal at the second output terminal comprising a phase shift with respect to the signal at the first output terminal. In a second mode of operation, the coupling element provides a signal at the third output terminal, wherein the provided signal is received at the input terminal and reflected on the first and second output terminals.Type: GrantFiled: January 26, 2007Date of Patent: May 26, 2009Assignee: Infineon Technologies AGInventors: Grigory Itkin, Andrei Grebennikov
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Publication number: 20090111401Abstract: 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: ApplicationFiled: October 29, 2007Publication date: April 30, 2009Inventors: Grigory Itkin, Andrei Grebennikov
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Patent number: 7511658Abstract: One embodiment relates to a radar system. In one embodiment, an automotive radar system comprises a power amplifier configured to provide first and second anti-phase transmission signals to respective first and second differential couplers which are individually connected to respective first and second transceiving antennas. A first portion of the first anti-phase transmission signal is coupled to the first antenna and a second portion of the first anti-phase transmission signal is coupled to a third transceiving antenna by way of a third differential coupler. A first portion of the second anti-phase transmission signal is coupled to the second antenna and a second portion of the second anti-phase transmission signal is coupled to the third antenna by way of the third differential coupler. Configured in this manner, the radar system is operable to transmit and receive from the multiple antennas with high efficiency, while maintaining low-cost and reduced overall size.Type: GrantFiled: January 16, 2008Date of Patent: March 31, 2009Assignee: Infineon Technologies AGInventors: Andrei Grebennikov, Günter Haider
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Patent number: 7440729Abstract: Apparatus, methods and articles of manufacture for output impedance matching in multi-band power amplification are provided, wherein an output matching configuration comprising one or more output matching sections, a multi-band diplexer and a switch are connected to an active device.Type: GrantFiled: April 16, 2004Date of Patent: October 21, 2008Assignee: M/A-Com Eurotec B.V.Inventors: Piotr Solski, Andrei Grebennikov, Eugene Heaney
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Publication number: 20080180168Abstract: An amplifier includes a signal input, a first, second and third amplification path. A coupling element having a first and a second output terminal is coupled to respective input terminals of the first and second amplification paths, and is coupled with a third terminal to an input terminal of the third amplification path. In a first mode of operation the coupling element provides a signal at the first and second output terminals, wherein the signal at the second output terminal comprising a phase shift with respect to the signal at the first output terminal. In a second mode of operation, the coupling element provides a signal at the third output terminal, wherein the provided signal is received at the input terminal and reflected on the first and second output terminals.Type: ApplicationFiled: January 26, 2007Publication date: July 31, 2008Inventors: Grigory Itkin, Andrei Grebennikov
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Patent number: 7345534Abstract: A system for efficient power amplification of an electromagnetic signal includes a switchplexer having at least two inputs and an output. The switchplexer may be configured to provide communication between a selected switchplexer input and the switchplexer output. The system also may include two or more amplifier stages, each having an input and an output, and one or more output matching circuits. Each of the output matching circuits may include an input in communication with one of the amplifier stage outputs, as well as an output in communication with one of the switchplexer inputs. A control unit may be configured to control selection of the selected switchplexer input and to selectively activate at least one of the amplifier stages.Type: GrantFiled: May 31, 2005Date of Patent: March 18, 2008Assignee: M/A-Com Eurotec BVInventor: Andrei Grebennikov
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Patent number: 7245183Abstract: A method of processing an electromagnetic wave comprises regulating at least two independently controllable current sources with a signal determined from at least one characteristic of the electromagnetic wave to generate a processed electromagnetic wave from at least one of the independently controllable current sources.Type: GrantFiled: March 25, 2003Date of Patent: July 17, 2007Assignee: M/A-Com Eurotec BVInventors: Pierce Joseph Nagle, Andrei Grebennikov, Frank Sharpe, Gerard Quilligan
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Publication number: 20070103236Abstract: A method of processing an electromagnetic wave comprises regulating at least two independently controllable current sources with a signal determined from at least one characteristic of the electromagnetic wave to generate a processed electromagnetic wave from at least one of the independently controllable current sources.Type: ApplicationFiled: March 25, 2003Publication date: May 10, 2007Inventors: Pierce Nagle, Andrei Grebennikov, Frank Sharpe, Gerard Quilligan
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Publication number: 20060280261Abstract: Systems and methods for controlling output power from a power amplifier include a power amplifier configured to generate a power output signal. An output matching circuit is in communication with the power amplifier and is configured to provide an impedance match between the power amplifier and the load. The output matching circuit includes a coupler circuit configured to detect the level of the power output signal. The coupler circuit is further configured to generate a coupler circuit output signal that is proportional to the detected output power level. A feedback control loop circuit is in communication with the coupler circuit and the power amplifier. The feedback control loop circuit is configured to control the power output level based at least in part on the coupler circuit output signal.Type: ApplicationFiled: June 10, 2005Publication date: December 14, 2006Inventors: Dima Prikhodko, Andrei Grebennikov, Eoin Carey
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Publication number: 20060267682Abstract: A system for efficient power amplification of an electromagnetic signal includes a switchplexer having at least two inputs and an output. The switchplexer may be configured to provide communication between a selected switchplexer input and the switchplexer output. The system also may include two or more amplifier stages, each having an input and an output, and one or more output matching circuits. Each of the output matching circuits may include an input in communication with one of the amplifier stage outputs, as well as an output in communication with one of the switchplexer inputs. A control unit may be configured to control selection of the selected switchplexer input and to selectively activate at least one of the amplifier stages.Type: ApplicationFiled: May 31, 2005Publication date: November 30, 2006Inventor: Andrei Grebennikov
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Publication number: 20050233764Abstract: Apparatus, methods and articles of manufacture for output impedance matching in multi-band power amplification are provided, wherein an output matching configuration comprising one or more output matching sections, a multi-band diplexer and a switch are connected to an active device.Type: ApplicationFiled: April 16, 2004Publication date: October 20, 2005Applicant: M/A-COM Eurotec, B.V.Inventors: Piotr Solski, Andrei Grebennikov, Eugene Heaney
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Publication number: 20050225396Abstract: An apparatus and method for biasing a power amplifier circuit operating as a Digital to Analog Converter (DAC) are described. The bias circuit comprises a first transistor with a reference voltage coupled to its base terminal, a second transistor coupled to the emitter terminal of the first transistor at its collector terminal, and a third transistor with its base terminal coupled to the first and second transistors, and to an input signal.Type: ApplicationFiled: April 8, 2004Publication date: October 13, 2005Applicant: M/A-COM, EUROTEC B.V.Inventors: Andrei Grebennikov, Eugene Heaney
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Publication number: 20040189395Abstract: A method of processing an electromagnetic wave comprises regulating at least two independently controllable current sources with a signal determined from at least one characteristic of the electromagnetic wave to generate a processed electromagnetic wave from at least one of the independently controllable current sources.Type: ApplicationFiled: March 25, 2003Publication date: September 30, 2004Applicant: M/A-Com, Eurotec BVInventors: Pierce Joseph Nagle, Andrei Grebennikov, Frank Sharpe, Gerard Quilligan