Patents by Inventor Bassel Hanafi
Bassel Hanafi 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: 20230387868Abstract: A wideband amplifier includes an input matching network for matching a transconductor stage to an input impedance and includes an output matching network for matching the transconductor stage to an output impedance. Both the input and output matching networks each includes a parallel LC tank circuit arranged in parallel with a series LC tank circuit. The tank circuit arrangements configure the input and output matching networks to be resonant at a first frequency, a midrange frequency that is greater than the first frequency, and a second frequency that is greater than the midrange frequency to provide wideband matching.Type: ApplicationFiled: May 25, 2022Publication date: November 30, 2023Inventors: Ahmed KORD, Francesco GATTA, Mehmet UZUNKOL, Bassel HANAFI
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Publication number: 20230231586Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry implementing a low noise amplifier (LNA) with phase-shifting circuitry to achieve a continuous phase at the output of the LNA. One aspect is an amplifier including a high gain active path comprising active circuitry, and a low gain path comprising passive circuitry and phase-shifting circuitry. In one or more aspects, the phase-shifting circuitry is configured to shift a phase of an input signal within the low gain path such that the phase of an output signal outputted from the low gain path approximately matches a phase of an output signal outputted from the high gain active path. In at least one aspect, a gain of the high gain active path is higher than a gain of the low gain passive path.Type: ApplicationFiled: January 20, 2022Publication date: July 20, 2023Inventors: Xingyi HUA, Bassel HANAFI, Karthik TRIPURARI JAYARAMAN, Francesco GATTA
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Patent number: 10033340Abstract: Certain aspects of the present disclosure generally relate to a multi-output amplifier implemented using a capacitive attenuator. For example, the multi-output amplifier generally includes a first capacitive attenuator coupled to an input node of the multi-output amplifier. In certain aspects, the multi-output amplifier also includes a first amplification stage having an input coupled to a tap node of the first capacitive attenuator and an output coupled to a first output node of the multi-output amplifier, and a second amplification stage having an output coupled to a second output node of the multi-output amplifier. For certain aspects, the multi-output amplifier includes a second capacitive attenuator coupled to the input node of the multi-output amplifier, and the second amplification stage may have an input coupled to a tap node of the second capacitive attenuator.Type: GrantFiled: January 6, 2017Date of Patent: July 24, 2018Assignee: QUALCOMM IncorporatedInventors: Bassel Hanafi, Sherif Abdelhalem, Hasnain Lakdawala
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Publication number: 20180198428Abstract: Certain aspects of the present disclosure generally relate to a multi-output amplifier implemented using a capacitive attenuator. For example, the multi-output amplifier generally includes a first capacitive attenuator coupled to an input node of the multi-output amplifier. In certain aspects, the multi-output amplifier also includes a first amplification stage having an input coupled to a tap node of the first capacitive attenuator and an output coupled to a first output node of the multi-output amplifier, and a second amplification stage having an output coupled to a second output node of the multi-output amplifier. For certain aspects, the multi-output amplifier includes a second capacitive attenuator coupled to the input node of the multi-output amplifier, and the second amplification stage may have an input coupled to a tap node of the second capacitive attenuator.Type: ApplicationFiled: January 6, 2017Publication date: July 12, 2018Inventors: Bassel HANAFI, Sherif ABDELHALEM, Hasnain LAKDAWALA
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Patent number: 9800273Abstract: A device and method for amplifying signals is provided. The device can have an input to receive an input signal having a first desired signal on a first carrier, a second desired signal on a second carrier, and one or more interfering signals. The device can have a first carrier aggregation (CA) chain for use with the first desired signal and a second CA chain for use with the second desired signal. The first and second CA chains can be coupled to the input. The first and second CA chains can have a plurality of transconductance stages. Each of the transconductance stages can be configured as a high impedance stage or a low impedance stage. The transconductance stages can be selectively activated to incrementally adjust the transconductance, and therefore the input impedance, of each of the CA chains.Type: GrantFiled: March 1, 2017Date of Patent: October 24, 2017Assignee: QUALCOMM IncorporatedInventors: Sherif Abdelhalem, Bassel Hanafi, Hasnain Lakdawala
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Patent number: 9628031Abstract: An apparatus includes: first and second transistors, each of the first and second transistors includes a gate terminal, a source terminal, and a drain terminal; and a transformer including a primary winding and first and second secondary windings, the primary winding is coupled to a first input node configured to receive an input signal and a second input node configured to receive a potential, the first and second secondary windings are coupled to gate terminals of the first and second transistors and cross-coupled to source terminals of the first and second transistors.Type: GrantFiled: March 10, 2015Date of Patent: April 18, 2017Assignee: QUALCOMM INCORPORATEDInventors: Ojas Mahendra Choksi, Bin Fan, Bassel Hanafi
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Patent number: 9450626Abstract: An apparatus including: at least one differential amplifier configured to amplify a radio frequency signal; a mixer configured to mix the radio frequency signal from the at least one differential amplifier with a local oscillator signal; and a low-pass filter coupled to the mixer, the low-pass filter includes a capacitor and at least one variable resistor configured to tune the low-pass filter.Type: GrantFiled: March 10, 2015Date of Patent: September 20, 2016Assignee: QUALCOMM IncorporatedInventors: Ojas Mahendra Choksi, Bin Fan, Bassel Hanafi, Hasnain Mohammedi Lakdawala, Prashanth Akula, Faramarz Sabouri
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Publication number: 20160142085Abstract: An apparatus including: at least one differential amplifier configured to amplify a radio frequency signal; a mixer configured to mix the radio frequency signal from the at least one differential amplifier with a local oscillator signal; and a low-pass filter coupled to the mixer, the low-pass filter includes a capacitor and at least one variable resistor configured to tune the low-pass filter.Type: ApplicationFiled: March 10, 2015Publication date: May 19, 2016Inventors: Ojas Mahendra Choksi, Bin Fan, Bassel Hanafi, Hasnain Mohammedi Lakdawala, Prashanth Akula, Faramarz Sabouri
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Publication number: 20160126896Abstract: An apparatus includes: first and second transistors, each of the first and second transistors includes a gate terminal, a source terminal, and a drain terminal; and a transformer including a primary winding and first and second secondary windings, the primary winding is coupled to a first input node configured to receive an input signal and a second input node configured to receive a potential, the first and second secondary windings are coupled to gate terminals of the first and second transistors and cross-coupled to source terminals of the first and second transistors.Type: ApplicationFiled: March 10, 2015Publication date: May 5, 2016Inventors: Ojas Mahendra Choksi, Bin Fan, Bassel Hanafi
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Patent number: 8847695Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.Type: GrantFiled: August 15, 2011Date of Patent: September 30, 2014Assignee: Si-Ware SystemsInventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
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Patent number: 8810329Abstract: An LC oscillator tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The oscillator further includes frequency stabilizer circuitry coupled to the LC oscillator tank to cause the LC oscillator tank to operate at the temperature null phase. In one aspect of the disclosure, a feedback loop may split the output voltage of the LC tank into two voltages having different phases, where each voltage is independently transformed into a current through programmable transconductors, The two currents may be combined to form a resultant current which is then applied to the LC tank. The phase of the resultant current is such that the LC tank operates at an impedance condition that achieves frequency stability across temperature.Type: GrantFiled: August 8, 2012Date of Patent: August 19, 2014Inventors: Nabil M. Sinoussi, Bassel Hanafi
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Publication number: 20130314168Abstract: An LC oscillator tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The oscillator further includes frequency stabilizer circuitry coupled to the LC oscillator tank to cause the LC oscillator tank to operate at the temperature null phase. In one aspect of the disclosure, a feedback loop may split the output voltage of the LC tank into two voltages having different phases, where each voltage is independently transformed into a current through programmable transconductors, The two currents may be combined to form a resultant current which is then applied to the LC tank. The phase of the resultant current is such that the LC tank operates at an impedance condition that achieves frequency stability across temperature.Type: ApplicationFiled: August 8, 2012Publication date: November 28, 2013Inventors: Nabil M. Sinoussi, Bassel Hanafi
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Publication number: 20110298547Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.Type: ApplicationFiled: August 15, 2011Publication date: December 8, 2011Applicant: SI-WARE SYSTEMSInventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
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Patent number: 8072281Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.Type: GrantFiled: August 21, 2009Date of Patent: December 6, 2011Assignee: Si-Ware Systems Inc.Inventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
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Publication number: 20100045394Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.Type: ApplicationFiled: August 21, 2009Publication date: February 25, 2010Applicant: SI-WARE SYSTEMSInventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed