Patents by Inventor Amir Dezfooliyan
Amir Dezfooliyan 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: 12057876Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to access a CFO (carrier frequency offset) estimate, and to, for each of one or more working frequencies: cause the receiver RF chain to receive a receiver RF signal from the antenna at each working frequency, generate I/Q measurement data based at least in part on the received receiver RF signal and the CFO estimate, store the I/Q measurement data, and cause the transmitter RF chain to transmit a transmitter RF signal to the antenna at each working frequency, where the controller is further configured to cause the transmitter RF chain to transmit the I/Q measurement data for each working frequency to the antenna.Type: GrantFiled: October 21, 2022Date of Patent: August 6, 2024Assignee: Shenzhen Goodix Technology Co., Ltd.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Patent number: 11656314Abstract: A receiver circuit is disclosed. The receiver circuit includes a receiver antenna or a receiver antenna arrays oriented at a receiver orientation angle and configured to receive a plurality of RF signals transmitted from a transmitter circuit including a transmit antenna or a transmit antenna array oriented at a transmitter orientation angle. A controller A) calculates first and second AoAs based on a first signal at a first receiver antenna array, and calculates third and fourth AoAs based on a second signal at a second receiver antenna array, and/or B) calculates first and second AoDs based on a third signal from a first transmit antenna array, and calculates third and fourth AoDs based on a fourth signal from a second transmit antenna array. The controller also determines which of the first and second AoAs is correct, and/or determines which of the first and second AoDs is correct.Type: GrantFiled: September 28, 2020Date of Patent: May 23, 2023Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20230109399Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to cause the receiver RF chain to receive a first distance estimate between the antenna and another transceiver circuit, to calculate a second distance estimate between the antenna and the other transceiver circuit, and to determine a range estimate between the antenna and the other transceiver circuit based on the first distance estimate and the second distance estimate.Type: ApplicationFiled: September 30, 2021Publication date: April 6, 2023Inventors: Mohammad RANJBAR, Amir DEZFOOLIYAN, Waleed YOUNIS
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Patent number: 11621738Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to cause the receiver RF chain to receive a first distance estimate between the antenna and another transceiver circuit, to calculate a second distance estimate between the antenna and the other transceiver circuit, and to determine a range estimate between the antenna and the other transceiver circuit based on the first distance estimate and the second distance estimate.Type: GrantFiled: September 30, 2021Date of Patent: April 4, 2023Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Patent number: 11619699Abstract: A receiver circuit is disclosed. The receiver circuit includes one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit including one or more transmit antennas, an RF chain configured to generate a plurality of digitized samples of the received RF signals, and a controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples.Type: GrantFiled: August 30, 2020Date of Patent: April 4, 2023Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20230095335Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to access a CFO (carrier frequency offset) estimate, and to, for each of one or more working frequencies: cause the receiver RF chain to receive a receiver RF signal from the antenna at each working frequency, generate I/Q measurement data based at least in part on the received receiver RF signal and the CFO estimate, store the I/Q measurement data, and cause the transmitter RF chain to transmit a transmitter RF signal to the antenna at each working frequency, where the controller is further configured to cause the transmitter RF chain to transmit the I/Q measurement data for each working frequency to the antenna.Type: ApplicationFiled: October 21, 2022Publication date: March 30, 2023Inventors: Mohammad RANJBAR, Amir DEZFOOLIYAN, Waleed YOUNIS
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Patent number: 11533076Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, a frequency synthesizer configured to generate an oscillator signal, and a controller configured to cause the receiver RF chain to receive a first reflection signal from the antenna, down convert the first reflection signal to a non-zero intermediate frequency, and determine a range estimate to another transceiver circuit based on a phase of the first reflection signal.Type: GrantFiled: September 30, 2021Date of Patent: December 20, 2022Assignee: Shenzhen Goodix Technology Co., Ltd.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Patent number: 11522574Abstract: A transceiver is disclosed. The transceiver accesses a CFO (carrier frequency offset) estimate, and, for each of one or more working frequencies: transmits a transmitter RF signal at each working frequency, receives a receiver RF signal at each working frequency, and generates first I/Q measurement data based at least in part on the received receiver RF signal and the CFO estimate. In some embodiments, the transceiver receives I/Q measurement information for each working frequency. In some embodiments, the transceiver generates second I/Q measurement data based at least in part on the received I/Q measurement information. In some embodiments, the transceiver estimates a distance between the antenna and an antenna of another device based at least in part on the first and second I/Q measurement data.Type: GrantFiled: September 30, 2021Date of Patent: December 6, 2022Assignee: Shenzhen Goodix Technology Co., Ltd.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Patent number: 11483052Abstract: A receiver is disclosed. The receiver includes one or more antennas receiving signals from a transmitter including one or more antennas, and at least one RF chain generating digital samples based on the received signals. Either A) the signals are transmitted by a single antenna of the transmitter and are received by multiple antennas of the receiver, or B) the signals are transmitted by multiple antennas of the transmitter and are received by a single antenna of the receiver. The receiver also includes a controller determining a plurality of groups of digital samples to use for calculating estimates of an AoA or AoD of the received signals, calculate estimates of AoA or AoD based on the groups of digital samples, select a subset of the estimates, and calculate a measured AoA or AoD based on the selected subset of estimates.Type: GrantFiled: August 30, 2020Date of Patent: October 25, 2022Assignee: Shenzhen Goodix Technology Co., Ltd.Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20220099784Abstract: A receiver circuit is disclosed. The receiver circuit includes a receiver antenna or a receiver antenna arrays oriented at a receiver orientation angle and configured to receive a plurality of RF signals transmitted from a transmitter circuit including a transmit antenna or a transmit antenna array oriented at a transmitter orientation angle. A controller A) calculates first and second AoAs based on a first signal at a first receiver antenna array, and calculates third and fourth AoAs based on a second signal at a second receiver antenna array, and/or B) calculates first and second AoDs based on a third signal from a first transmit antenna array, and calculates third and fourth AoDs based on a fourth signal from a second transmit antenna array. The controller also determines which of the first and second AoAs is correct, and/or determines which of the first and second AoDs is correct.Type: ApplicationFiled: September 28, 2020Publication date: March 31, 2022Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20220099783Abstract: One inventive aspect is a receiver circuit. The receiver circuit includes a controller selecting a receiver antenna array and/or a transmit antenna array. The controller also calculates a first AoA and/or a first AoD based on signals from the selected receiver and/or transmit antenna array. The controller also, in response to the absolute value of the first AoA minus ?/2 not being less than or equal to the AoA threshold angle, selects a different receiver antenna array, and calculates a second AoA based on digitized samples of RF signals from the selected different receiver antenna array. The controller also, in response to the absolute value of the first AoD minus ?/2 not being less than or equal to the AoD threshold angle, selects a different transmit antenna array, and calculates a second AoD based on digitized samples of RF signals from the selected different transmit antenna array.Type: ApplicationFiled: September 28, 2020Publication date: March 31, 2022Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20220065974Abstract: A receiver circuit is disclosed. The receiver circuit includes one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit including one or more transmit antennas, an RF chain configured to generate a plurality of digitized samples of the received RF signals, and a controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples.Type: ApplicationFiled: August 30, 2020Publication date: March 3, 2022Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Publication number: 20220069886Abstract: A receiver is disclosed. The receiver includes one or more antennas receiving signals from a transmitter including one or more antennas, and at least one RF chain generating digital samples based on the received signals. Either A) the signals are transmitted by a single antenna of the transmitter and are received by multiple antennas of the receiver, or B) the signals are transmitted by multiple antennas of the transmitter and are received by a single antenna of the receiver. The receiver also includes a controller determining a plurality of groups of digital samples to use for calculating estimates of an AoA or AoD of the received signals, calculate estimates of AoA or AoD based on the groups of digital samples, select a subset of the estimates, and calculate a measured AoA or AoD based on the selected subset of estimates.Type: ApplicationFiled: August 30, 2020Publication date: March 3, 2022Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
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Patent number: 10785079Abstract: A method and apparatus are provided. The method includes receiving a reference signal from a transceiver, estimating a time offset (TO) of the reference signal in the frequency domain based on a spectral phase ramp introduced by the TO, compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying the spectral phase ramp to the received reference signal, and providing a TO compensated signal of the reference signal.Type: GrantFiled: August 9, 2019Date of Patent: September 22, 2020Assignee: Samsung Electronics Co., LtdInventors: Amir Dezfooliyan, Vignesh Sethuraman, Hamed Maleki, Linbo Li, Kee-Bong Song
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Patent number: 10778153Abstract: Techniques are described for crest factor reduction in power amplifier circuits. For example, crest factor reduction can keep the peak signal level of a signal for transmission to below a peak threshold level associated with a power amplifier in the transmission path. The signal is received by the crest factor reduction system and clipped in accordance with the peak threshold level. Edge smoothing is then applied to the clipped signal to reduce out-of-band emissions. The edge smoothing is implemented by a moving average filter, such as a time-domain box filter. In some embodiments, a maximum operation or minimum operation is used to prevent signal peak regrowth after the filtering. Some embodiments also include various iteration loops to further improve crest factor reduction.Type: GrantFiled: February 4, 2020Date of Patent: September 15, 2020Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.Inventors: Amir Dezfooliyan, Waleed Younis, Tobias Seifert, Gunnar Nitsche
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Publication number: 20200177138Abstract: Techniques are described for crest factor reduction in power amplifier circuits. For example, crest factor reduction can keep the peak signal level of a signal for transmission to below a peak threshold level associated with a power amplifier in the transmission path. The signal is received by the crest factor reduction system and clipped in accordance with the peak threshold level. Edge smoothing is then applied to the clipped signal to reduce out-of-band emissions. The edge smoothing is implemented by a moving average filter, such as a time-domain box filter. In some embodiments, a maximum operation or minimum operation is used to prevent signal peak regrowth after the filtering. Some embodiments also include various iteration loops to further improve crest factor reduction.Type: ApplicationFiled: February 4, 2020Publication date: June 4, 2020Inventors: Amir Dezfooliyan, Waleed Younis, Tobias Seifert, Gunnar Nitsche
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Patent number: 10594269Abstract: Techniques are described for crest factor reduction in power amplifier circuits. For example, crest factor reduction can keep the peak signal level of a signal for transmission to below a peak threshold level associated with a power amplifier in the transmission path. The signal is received by the crest factor reduction system and clipped in accordance with the peak threshold level. Edge smoothing is then applied to the clipped signal to reduce out-of-band emissions. The edge smoothing is implemented by a moving average filter, such as a time-domain box filter. In some embodiments, a maximum operation or minimum operation is used to prevent signal peak regrowth after the filtering. Some embodiments also include various iteration loops to further improve crest factor reduction.Type: GrantFiled: August 8, 2018Date of Patent: March 17, 2020Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.Inventors: Amir Dezfooliyan, Waleed Younis, Tobias Seifert, Gunnar Nitsche
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Publication number: 20200052656Abstract: Techniques are described for crest factor reduction in power amplifier circuits. For example, crest factor reduction can keep the peak signal level of a signal for transmission to below a peak threshold level associated with a power amplifier in the transmission path. The signal is received by the crest factor reduction system and clipped in accordance with the peak threshold level. Edge smoothing is then applied to the clipped signal to reduce out-of-band emissions. The edge smoothing is implemented by a moving average filter, such as a time-domain box filter. In some embodiments, a maximum operation or minimum operation is used to prevent signal peak regrowth after the filtering. Some embodiments also include various iteration loops to further improve crest factor reduction.Type: ApplicationFiled: August 8, 2018Publication date: February 13, 2020Inventors: Amir Dezfooliyan, Waleed Younis, Tobias Seifert, Gunnar Nitsche
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Publication number: 20190363922Abstract: A method and apparatus are provided. The method includes receiving a reference signal from a transceiver, estimating a time offset (TO) of the reference signal in the frequency domain based on a spectral phase ramp introduced by the TO, compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying the spectral phase ramp to the received reference signal, and providing a TO compensated signal of the reference signal.Type: ApplicationFiled: August 9, 2019Publication date: November 28, 2019Inventors: Amir DEZFOOLIYAN, Vignesh SETHURAMAN, Hamed MALEKI, Linbo LI, Kee-Bong SONG
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Patent number: 10419248Abstract: Methods and apparatuses are provided in which a signal is received at a receiver. A processor of the receiver computes frequency offset (FO) inter-carrier interference (ICI) compensation, based on a real matrix part of an approximate ICI matrix and an FO estimated from the received signal. The processor applies the FO ICI compensation to the received signal in a frequency domain to produce an ICI compensated output. The processor applies a phase rotation to the ICI compensated output.Type: GrantFiled: February 17, 2017Date of Patent: September 17, 2019Assignee: Samsung Electronics Co., LtdInventors: Amir Dezfooliyan, Vignesh Sethuraman, Hyukjoon Kwon, Hamed Maleki, Linbo Li, Kee-Bong Song