Patents by Inventor Masoud Kahrizi
Masoud Kahrizi 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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Publication number: 20210194524Abstract: In an embodiment, a receiver included in a communications system includes a channel extractor configured to segregate a received signal into a plurality of channel signals, wherein the plurality of channel signals includes a plurality of data signals; and a plurality of decoders electrically coupled to the channel extractor and configured to decode each of the plurality of channel signals into a respective plurality of decoded data beam portions.Type: ApplicationFiled: March 5, 2021Publication date: June 24, 2021Applicant: Space Exploration Technologies Corp.Inventors: Alireza Mehrnia, Masoud Kahrizi, Alex Ahmad Mirzaei, Bagher Afshar, Ali Sajjadi, Bernd Pregardier, Ka Shun Carson Pun, Omid Nasiby, Igor Elgorriaga
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Publication number: 20210184741Abstract: In an embodiment, an apparatus includes a first plurality of digital beamformers associated with a first channel, the first plurality of digital beamformers configured to encode each data beam of a first plurality of data beams of the first channel to generate an encoded first plurality of data beams; a second plurality of digital beamformers associated with a second channel different from the first channel, the second plurality of digital beamformers configured to encode each data beam of a second plurality of data beams of the second channel to generate an encoded second plurality of data beams; and a channel combiner, electrically coupled to the first and second plurality of digital beamformers, and configured to generate a combined channel comprising an aggregation of at least a portion of the encoded first plurality of data beams and at least a portion of the encoded second plurality of data beams.Type: ApplicationFiled: February 26, 2021Publication date: June 17, 2021Applicant: Space Exploration Technologies Corp.Inventors: Alireza Mehrnia, Masoud Kahrizi, Ka Shun Carson Pun, Omid Nasiby, Alex Ahmad Mirzaei
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Patent number: 10944442Abstract: In an embodiment, a receiver included in a communications system includes a channel extractor configured to segregate a received signal into a plurality of channel signals, wherein the plurality of channel signals includes a plurality of data signals; a plurality of phase shifters electrically coupled to the channel extractor and configured to decode each data signal of the plurality of data signals with a respective phase; and a plurality of time delay filters electrically coupled to the plurality of phase shifters and configured to decode each data signal of the plurality of data signals with a respective time delay, wherein the plurality of time delay filters outputs each subset of the plurality of data signals in a respective channel of the plurality of channels.Type: GrantFiled: May 3, 2020Date of Patent: March 9, 2021Assignee: Space Exploration Technologies Corp.Inventors: Alireza Mehrnia, Masoud Kahrizi, Alex Ahmad Mirzaei, Bagher Afshar, Ali Sajjadi, Bernd Pregardier, Ka Shun Carson Pun, Omid Nasiby, Igor Elgorriaga
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Patent number: 10938465Abstract: In an embodiment, an apparatus includes a first plurality of digital beamformers associated with a first channel; a second plurality of digital beamformers associated with a second channel different from the first channel; a channel combiner, electrically coupled to the first and second plurality of digital beamformers, and configured to generate a combined channel comprising an aggregation of the encoded first plurality of data beams and the encoded second plurality of data beams, wherein the combined channel has a bandwidth that is a function of a bandwidth of one or both of the first or second channel; and a radio frequency (RF) transmission section, electrically coupled to the channel combiner, and configured to generate an output signal to be provided to a transmitting antenna based on the combined channel, wherein the RF transmission section includes a digital-to-analog converter (DAC) and a mixer.Type: GrantFiled: May 3, 2020Date of Patent: March 2, 2021Assignee: SPACE EXPLORATION TECHNOLOGIES CORP.Inventors: Alireza Mehrnia, Masoud Kahrizi, Ka Shun Carson Pun, Omid Nasiby, Alex Ahmad Mirzaei
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Publication number: 20210013975Abstract: In an embodiment, an apparatus included in a communications system includes a transmit section including a first baseband section and a first radio frequency (RF) section, wherein the transmit section is configured to receive a calibration signal, the first RF section is configured to generate a RF calibration signal based on the calibration signal, and wherein the calibration signal comprises an orthogonal code based signal; and a receive section configured to receive the RF calibration signal over-the-air, wherein the receive section includes a second RF section and a calibration section, wherein the second RF section is configured to generate a received calibration signal based on the RF calibration signal, and wherein the calibration section is configured to determine one or more of gain, baseband delay, or RF delay compensation values, based on the inputs, to calibrate the transmit section.Type: ApplicationFiled: May 13, 2020Publication date: January 14, 2021Applicant: Space Exploration Technologies Corp.Inventors: David Francois Jacquet, Masoud Kahrizi, Robert Baummer, JR., Jean-Noel Rozec, Fabrice Jean André Belvèze, Paul Lee Pearson, Francois Lucien Emile Icher, Marc Gens, Pascal Triaire
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Publication number: 20200388916Abstract: In an embodiment, a device is included in a communications system, the device including a plurality of antenna elements configured in a phased array antenna; a plurality of integrated circuit (IC) chips, wherein each IC chip of the plurality of IC chips is associated with a respective subset of antenna elements of the plurality of antenna elements, and wherein, for each IC chip of the plurality of IC chips, the associated subset of antenna elements is used for transmitting and receiving radio frequency (RF) signals by the IC chip; and a local oscillator configured to generate a common local oscillator signal and provide the common local oscillator signal to each IC chip of the plurality of IC chips.Type: ApplicationFiled: May 3, 2020Publication date: December 10, 2020Applicant: Space Exploration Technologies Corp.Inventors: Masoud Kahrizi, Alex Ahmad Mirzaei, Ali Sajjadi, Bagher Afshar, Babak Vakili-Amini, Alireza Mehrnia, Behzad Nourani, Bernd Pregardier
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Patent number: 10425132Abstract: A wireless communication system and method that includes configurable Carrier Aggregation (CA) and/or Multiple-input Multiple-output (MIMO) operational modes. In CA, multiple carriers (i.e., channel bundling) are aggregated and jointly used for transmission to/from a single terminal. Downlink inter-band carrier aggregation increases the downlink data rates by routing two signals, received in different frequency bands, simultaneously to two active receivers in the RF transceiver. MIMO utilizes two additional receivers as diversity paths and the frequency generation can be shared between main and diversity path for each carriers.Type: GrantFiled: April 16, 2018Date of Patent: September 24, 2019Assignee: Avago Technologies International Sales Pte. LimitedInventors: Masoud Kahrizi, Alireza Tarighat Mehrabani
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Publication number: 20180302127Abstract: A wireless communication system and method that includes configurable Carrier Aggregation (CA) and/or Multiple-input Multiple-output (MIMO) operational modes. In CA, multiple carriers (i.e., channel bundling) are aggregated and jointly used for transmission to/from a single terminal. Downlink inter-band carrier aggregation increases the downlink data rates by routing two signals, received in different frequency bands, simultaneously to two active receivers in the RF transceiver. MIMO utilizes two additional receivers as diversity paths and the frequency generation can be shared between main and diversity path for each carriers.Type: ApplicationFiled: April 16, 2018Publication date: October 18, 2018Inventors: Masoud KAHRIZI, Alireza Tarighat Mehrabani
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Patent number: 10063343Abstract: Apparatus and methods for transmit power control in wireless communication systems are provided. In one aspect, a wireless communication system includes a transmit chain that generates a transmit signal based on a data signal having a time-varying signal envelope, a power amplifier that amplifies the transmit signal, and a transmit chain controller that generates a first power control signal and a second power control signal that control an adjustable power level of the transmit chain. The transmit chain controller includes an error extractor that generates an error signal based on comparing an output signal power of the power amplifier to the time-varying signal envelope. The transmit chain controller further includes a control signal generator that generates the first power control signal and an adjustment signal based on estimating the error signal, and that generates the second power control signal based on the error signal and the adjustment signal.Type: GrantFiled: December 13, 2016Date of Patent: August 28, 2018Assignee: Skyworks Solutions, Inc.Inventors: Dmitriy Rozenblit, Rajasekhar Pullela, Jaleh Komaili, Masoud Kahrizi, Shahrzad Tadjpour
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Patent number: 9948363Abstract: A wireless communication system and method that includes configurable Carrier Aggregation (CA) and/or Multiple-input Multiple-output (MIMO) operational modes. In CA, multiple carriers (i.e., channel bundling) are aggregated and jointly used for transmission to/from a single terminal. Downlink inter-band carrier aggregation increases the downlink data rates by routing two signals, received in different frequency bands, simultaneously to two active receivers in the RF transceiver. MIMO utilizes two additional receivers as diversity paths and the frequency generation can be shared between main and diversity path for each carriers.Type: GrantFiled: January 13, 2016Date of Patent: April 17, 2018Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Masoud Kahrizi, Alireza Tarighat Mehrabani
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Patent number: 9860760Abstract: A device implementing the subject scalable radio frequency communication system includes one or more primary radio frequency integrated circuits (RFICs) and at least one secondary RFIC. Each of the one or more primary RFICs is configured to receive an intermediate frequency (IF) signal from a baseband processor, upconvert the IF signal to a radio frequency (RF) signal, and transmit the RF signal to one or more secondary RFICs. The secondary RFICs under each of the one or more primary RFICs are configured to receive the RF signal from the corresponding primary RFIC, phase shift and amplify the RF signal, and transmit the RF signal via a plurality of antenna elements.Type: GrantFiled: November 25, 2015Date of Patent: January 2, 2018Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.Inventors: Alireza Tarighat Mehrabani, Michael Boers, Masoud Kahrizi, Tirdad Sowlati, Bagher Afshar, Payam Torab Jahromi, Sean Timothy Nicolson, Brima Babatunde Ibrahim
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Patent number: 9629093Abstract: A programmable transmitter circuit may be coupled to a controller circuit. The controller circuit may be configured to generate control signals based at least on a signal. The transmitter circuit may include a plurality of unit cells. Each unit cell may include a respective first current source and a respective second current source. Each unit cell may be configured to be set in an activated state or a deactivated state based at least on the control signals. For a unit cell of the plurality of unit cells, when the unit cell is set in the activated state, the respective first current source or the respective second current source may be configured to generate a current to be applied to a load.Type: GrantFiled: July 20, 2015Date of Patent: April 18, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Alex Ahmad Mirzaei, Hooman Darabi, Masoud Kahrizi, Behnam Mohammadi
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Publication number: 20170093524Abstract: Apparatus and methods for transmit power control in wireless communication systems are provided. In one aspect, a wireless communication system includes a transmit chain that generates a transmit signal based on a data signal having a time-varying signal envelope, a power amplifier that amplifies the transmit signal, and a transmit chain controller that generates a first power control signal and a second power control signal that control an adjustable power level of the transmit chain. The transmit chain controller includes an error extractor that generates an error signal based on comparing an output signal power of the power amplifier to the time-varying signal envelope. The transmit chain controller further includes a control signal generator that generates the first power control signal and an adjustment signal based on estimating the error signal, and that generates the second power control signal based on the error signal and the adjustment signal.Type: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Inventors: Dmitriy Rozenblit, Rajasekhar Pullela, Jaleh Komaili, Masoud Kahrizi, Shahrzad Tadjpour
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Patent number: 9577685Abstract: A system includes baseband circuitry and a transmitter. The electrical behavior of the transmitter may cause distortion effects in the transmit output of the transmitter during transmissions based on input signals from the baseband circuitry. The baseband circuitry may reference a calibration evaluation function for multiple transmit variables to pre-distort the input signal to compensate for the distortion effect. Pre-distortion calibration logic may generate the evaluation function using a one-dimensional calibration technique. The evaluation function may facilitate the baseband accessing calibration data without necessarily relying on a look-up table. In some cases, a one-dimensional calibration for multiple transmit variables may use fewer calibration points than a similarly accurate multi-dimensional calibration.Type: GrantFiled: February 16, 2016Date of Patent: February 21, 2017Assignee: BROADCOM CORPORATIONInventors: Alex Ahmad Mirzaei, Hooman Darabi, Masoud Kahrizi
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Patent number: 9559808Abstract: Apparatus and methods for power control in mobile communication devices are provided. In one aspect, a wireless communication device includes a transmit chain that receives a digital in-phase (I) signal and a digital quadrature-phase (Q) signal and that generates a transmit signal. The wireless communication device further includes a power amplifier that amplifies the transmit signal, and a transmit chain controller including a reference generator that combines the digital I signal and the digital Q signal and generates a reference signal corresponding to an instantaneous value of an envelope of the combined signal. The transmit chain controller further includes an error extractor that generates an error signal based on the reference signal and an output power of the power amplifier, and a control signal generator that uses the error signal to generate one or more power control signals for controlling an adjustable power level of the transmit chain.Type: GrantFiled: October 30, 2015Date of Patent: January 31, 2017Assignee: SKYWORKS SOLUTIONS, INC.Inventors: Dmitriy Rozenblit, Rajasekhar Pullela, Jaleh Komaili, Masoud Kahrizi, Shahrzad Tadjpour
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Patent number: 9553615Abstract: A single hybrid receiver is provided for processing both single carrier and carrier aggregated (CA) communications signals where carriers are split into independent receive paths without any additional external components. The receiver receives all contiguous and non-contiguous intra-band CA and inter-band CA signals, including those of unequal bandwidths, allowing for improved rejection and balanced rejection of jamming signals on either side of the two carrier signals.Type: GrantFiled: February 26, 2016Date of Patent: January 24, 2017Assignee: BROADCOM CORPORATIONInventors: Amir Hadji-Abdolhamid, Bernd Pregardier, Masoud Kahrizi
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Publication number: 20160381632Abstract: A programmable transmitter circuit may be coupled to a controller circuit. The controller circuit may be configured to generate control signals based at least on a signal. The transmitter circuit may include a plurality of unit cells. Each unit cell may include a respective first current source and a respective second current source. Each unit cell may be configured to be set in an activated state or a deactivated state based at least on the control signals. For a unit cell of the plurality of unit cells, when the unit cell is set in the activated state, the respective first current source or the respective second current source may be configured to generate a current to be applied to a load.Type: ApplicationFiled: July 20, 2015Publication date: December 29, 2016Inventors: Alex Ahmad MIRZAEI, Hooman Darabi, Masoud Kahrizi, Behnam Mohammadi
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Publication number: 20160182094Abstract: A single hybrid receiver is provided for processing both single carrier and carrier aggregated (CA) communications signals where carriers are split into independent receive paths without any additional external components. The receiver receives all contiguous and non-contiguous intra-band CA and inter-band CA signals, including those of unequal bandwidths, allowing for improved rejection and balanced rejection of jamming signals on either side of the two carrier signals.Type: ApplicationFiled: February 26, 2016Publication date: June 23, 2016Applicant: BROADCOM CORPORATIONInventors: Amir Hadji-Abdolhamid, Bernd Pregardier, Masoud Kahrizi
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Patent number: 9356711Abstract: A technique to provide calibration in a receiver that receives multiple carriers and uses multiple receive signal paths to down-convert and process the multiple carrier signals.Type: GrantFiled: May 19, 2014Date of Patent: May 31, 2016Assignee: Broadcom CorporationInventors: Masoud Kahrizi, Bernd Pregardier
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Publication number: 20160150542Abstract: A device implementing the subject scalable radio frequency communication system includes one or more primary radio frequency integrated circuits (RFICs) and at least one secondary RFIC. Each of the one or more primary RFICs is configured to receive an intermediate frequency (IF) signal from a baseband processor, upconvert the IF signal to a radio frequency (RF) signal, and transmit the RF signal to one or more secondary RFICs. The secondary RFICs under each of the one or more primary RFICs are configured to receive the RF signal from the corresponding primary RFIC, phase shift and amplify the RF signal, and transmit the RF signal via a plurality of antenna elements.Type: ApplicationFiled: November 25, 2015Publication date: May 26, 2016Inventors: Alireza TARIGHAT MEHRABANI, Michael BOERS, Masoud KAHRIZI, Tirdad SOWLATI, Bagher AFSHAR, Payam TORAB JAHROMI, Sean Timothy NICOLSON, Brima Babatunde IBRAHIM