Patents by Inventor Ali Parsa
Ali Parsa 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: 20240146318Abstract: This disclosure is directed towards systems and methods that improve bandwidth shifting operations of an ADPLL without losing a lock of the ADPLL and having the benefit of being able to change the bandwidth an unlimited amount of times. Indeed, a processor may transmit amplification parameters to the ADPLL to implement a bandwidth shift. The shift may occur in response to a enable signal, such as a gear trigger control signal (gear_retime signal) or a enable signal generated to cause alignment of the shifting with a clock signal (e.g., enable signal generated by AND logic gates). These systems and methods described herein many enable multiple bandwidth changing operations to occur without compromising the complexity and footprint of the system.Type: ApplicationFiled: December 18, 2023Publication date: May 2, 2024Inventors: Ali Parsa, Ahmed I Hussein
-
Patent number: 11848680Abstract: This disclosure is directed towards systems and methods that improve bandwidth shifting operations of an ADPLL without losing a lock of the ADPLL and having the benefit of being able to change the bandwidth an unlimited amount of times. Indeed, a processor may transmit amplification parameters to the ADPLL to implement a bandwidth shift. The shift may occur in response to a enable signal, such as a gear trigger control signal (gear_retime signal) or a enable signal generated to cause alignment of the shifting with a clock signal (e.g., enable signal generated by AND logic gates). These systems and methods described herein many enable multiple bandwidth changing operations to occur without compromising the complexity and footprint of the system.Type: GrantFiled: May 17, 2022Date of Patent: December 19, 2023Assignee: Apple Inc.Inventors: Ali Parsa, Ahmed I Hussein
-
Publication number: 20230403016Abstract: This disclosure is directed towards systems and methods that improve bandwidth shifting operations of an ADPLL without losing a lock of the ADPLL and having the benefit of being able to change the bandwidth an unlimited amount of times. Indeed, a processor may transmit amplification parameters to the ADPLL to implement a bandwidth shift. The shift may occur in response to a enable signal, such as a gear trigger control signal (gear_retime signal) or a enable signal generated to cause alignment of the shifting with a clock signal (e.g., enable signal generated by AND logic gates). These systems and methods described herein many enable multiple bandwidth changing operations to occur without compromising the complexity and footprint of the system.Type: ApplicationFiled: May 17, 2022Publication date: December 14, 2023Inventors: Ali Parsa, Ahmed I. Hussein
-
Publication number: 20220360292Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The transceiver may include a transmit path, a receive path, and a loopback path that couples the transmit path to the receive path. A passive all-pass filter may be interposed on the loopback path. Control circuitry may calibrate I/Q mismatch of the wireless circuitry using the all-pass filter to optimize the radio-frequency performance of the wireless circuitry. Performing I/Q mismatch calibration using the all-pass filter may serve to minimize area consumption in the transceiver, may minimize calibration time, and may allow for calibration over a relatively wide bandwidth.Type: ApplicationFiled: July 19, 2022Publication date: November 10, 2022Inventors: Krishna Chaitanya Reddy Gangavaram, Ali Parsa
-
Patent number: 11476889Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The transceiver may include a transmit path, a receive path, and a loopback path that couples the transmit path to the receive path. A passive all-pass filter may be interposed on the loopback path. Control circuitry may calibrate I/Q mismatch of the wireless circuitry using the all-pass filter to optimize the radio-frequency performance of the wireless circuitry. Performing I/Q mismatch calibration using the all-pass filter may serve to minimize area consumption in the transceiver, may minimize calibration time, and may allow for calibration over a relatively wide bandwidth.Type: GrantFiled: March 3, 2021Date of Patent: October 18, 2022Assignee: Apple Inc.Inventors: Krishna Chaitanya Reddy Gangavaram, Ali Parsa
-
Publication number: 20220286158Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The transceiver may include a transmit path, a receive path, and a loopback path that couples the transmit path to the receive path. A passive all-pass filter may be interposed on the loopback path. Control circuitry may calibrate I/Q mismatch of the wireless circuitry using the all-pass filter to optimize the radio-frequency performance of the wireless circuitry. Performing I/Q mismatch calibration using the all-pass filter may serve to minimize area consumption in the transceiver, may minimize calibration time, and may allow for calibration over a relatively wide bandwidth.Type: ApplicationFiled: March 3, 2021Publication date: September 8, 2022Inventors: Krishna Chaitanya Reddy Gangavaram, Ali Parsa
-
Publication number: 20190198163Abstract: A system and method of optimising supply networks comprises the method steps of i) receiving a resource request from a user; ii) assessing the requirements of the request; iii) identifying all potential resources within a database that would fulfil the requirements; iv) ranking the potential resources in order of preference; v) allocating the most preferable resource to fulfil the request; and wherein, in the step of identifying all potential resources that would fulfil the requirements, all resource that does not fulfil primary requirements is discarded.Type: ApplicationFiled: August 11, 2017Publication date: June 27, 2019Inventors: Ali PARSA, Gary MUDIE, Prem SHARMA
-
Patent number: 10122391Abstract: Systems and method provided herein relate to reducing distortion of signals introduced by components on a phase path of a radio frequency system polar architecture. To reduce phase path distortion, a pre-distortion is introduced prior to a distortion caused by the components on the phase path. The pre-distortion in conjunction with the component distortion results in a transmission signal that forms its expected shape.Type: GrantFiled: September 30, 2015Date of Patent: November 6, 2018Assignee: Apple Inc.Inventors: Navid Lashkarian, Ehsan Adabi, Albert Chia-Wen Jerng, Arya Behzad, Ali Parsa
-
Publication number: 20170093444Abstract: Systems and method provided herein relate to reducing distortion of signals introduced by components on a phase path of a radio frequency system polar architecture. To reduce phase path distortion, a pre-distortion is introduced prior to a distortion caused by the components on the phase path. The pre-distortion in conjunction with the component distortion results in a transmission signal that forms its expected shape.Type: ApplicationFiled: September 30, 2015Publication date: March 30, 2017Inventors: Navid Lashkarian, Ehsan Adabi, Albert Chia-Wen Jerng, Arya Behzad, Ali Parsa
-
Patent number: 9577771Abstract: Systems and method for improving operation of a radio frequency system are provided. One embodiment provides a radio frequency system that includes an amplifier device with a first data path and a second data path. Additionally, the radio frequency system includes a controller that instructs the radio frequency system to transmit a calibration signal, which includes a first portion that excites the first data path and a second portion that excites the second data path; determines time skew between the first and second data paths based at least in part on phase shift between a first sample of a feedback signal and the first portion, phase shift between a second sample of the feedback signal and the second portion, or both; and instructs the radio frequency system to adjust delay applied on the first data path, the second data path, or both based at least on the time skew.Type: GrantFiled: July 25, 2016Date of Patent: February 21, 2017Assignee: APPLE INC.Inventors: Navid Lashkarian, Saeed Chehrazi, Ali Parsa
-
Patent number: 7893758Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired side band.Type: GrantFiled: June 15, 2009Date of Patent: February 22, 2011Assignee: ST-Ericsson SAInventors: Ali Parsa, Ali Fotowat-Ahmady, Ali Faghfuri, Mahta Jenabi, Emmanuel Riou, Wilhelm Steffen Hahn
-
Publication number: 20090267701Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired side band.Type: ApplicationFiled: June 15, 2009Publication date: October 29, 2009Inventors: Ali Parsa, Ali Fotowat-Ahmady, Ali Faghfuri, Mahta Jenabi, Emmanuel Riou, Wilhelm Steffen Hahn
-
Patent number: 7548591Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.Type: GrantFiled: April 20, 2004Date of Patent: June 16, 2009Assignee: NXP B.V.Inventors: Ali Parsa, Ali Fotowat-Ahmady, Ali Faghfuri, Mahta Jenabi, Emmanuel Riou, Wilhelm Steffen Hahn
-
Publication number: 20060208820Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.Type: ApplicationFiled: April 20, 2004Publication date: September 21, 2006Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Ali Parsa, Ali Fotowat-Ahmady, Ali Faghfuri, Mahta Jenabi, Emmanuel Riou, Wilhelm Hahn