Patents by Inventor A. Bellaouar
A. Bellaouar 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: 20240106490Abstract: A transmit (TX) local oscillator (LO) leakage calibration circuit including a transceiver having a transmit portion and a receive portion, an interface circuit connected to the transmit portion and the receive portion, an impedance control circuit connected to a low noise amplifier (LNA) in the receive portion, the impedance control circuit configured to adjust an input impedance for the LNA, a power detector coupled to an output of the LNA, and a local oscillator cancellation element connected to the power detector, the local oscillator cancellation element configured to adjust an input to the transmit portion based on TX LO leakage detected by the power detector.Type: ApplicationFiled: September 22, 2022Publication date: March 28, 2024Inventors: Chinmaya MISHRA, Abdellatif BELLAOUAR, Damin CAO, Rajagopalan RANGARAJAN, Kevin Hsi-Huai WANG
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Publication number: 20240097619Abstract: An apparatus is disclosed for reducing parasitic capacitance. In an example aspect, an apparatus includes an amplifier having a differential cascode configuration. Each stack of the amplifier includes a first transistor configured to operate as an input stage and a second transistor configured to operate as a cascode stage. The first and second transistors each include two channel terminal regions having a doping type that is uniform across the two channel terminal regions. Surfaces of first channel terminal regions of the first and second transistors abut a first and second quantity of electrical contacts, respectively. Second channel terminal regions of the first and second transistors form a floating region at a floating node. Each of the first quantity of electrical contacts and the second quantity of electrical contacts is greater than a third quantity of electrical contacts abutting a surface of the floating region.Type: ApplicationFiled: September 15, 2022Publication date: March 21, 2024Inventors: Ranadeep Dutta, Abdellatif Bellaouar, Chuan-Cheng Cheng
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Patent number: 11791848Abstract: We disclose multiband receivers for millimeter-wave devices, which may have reduced size and/or reduced power consumption. One multiband receiver comprises a first band path comprising a first passive mixer configured to receive a first input RF signal having a first frequency and to be driven by a first local oscillator signal having a frequency about ? the first frequency; a second band path comprising a second passive mixer configured to receive a second input RF signal having a second frequency and to be driven by a second local oscillator signal having a frequency about ? the second frequency; and a base band path comprising a third passive mixer configured to receive intermediate RF signals during a duty cycle and to be driven by a third local oscillator signal having a frequency about ? the first frequency or about ? the second frequency during the duty cycle.Type: GrantFiled: December 20, 2021Date of Patent: October 17, 2023Assignee: GlobalFoundries U.S. Inc.Inventors: Abdellatif Bellaouar, Sher Jiun Fang, Frank Zhang
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Publication number: 20230258699Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.Type: ApplicationFiled: April 25, 2023Publication date: August 17, 2023Inventors: Abdellatif BELLAOUAR, Arul BALASUBRAMANIYAN, Gurkanwal Singh SAHOTA, Muhammad HASSAN, Jorge GARCIA, Bhushan Shanti ASURI, Ravi SRIDHARA, Omar Essam EL-AASSAR, Chinmaya MISHRA
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Patent number: 11656254Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.Type: GrantFiled: July 17, 2020Date of Patent: May 23, 2023Assignee: QUALCOMM IncorporatedInventors: Abdellatif Bellaouar, Arul Balasubramaniyan, Gurkanwal Singh Sahota, Muhammad Hassan, Jorge Garcia, Bhushan Shanti Asuri, Ravi Sridhara, Omar Essam El-Aassar, Chinmaya Mishra
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Publication number: 20230091253Abstract: A transceiver interface for a phased array element includes a first magnetic circuit having a primary coil and a secondary coil, a second magnetic circuit having a primary coil, a secondary coil and a tertiary coil, a main amplifier path and an auxiliary amplifier path, the main amplifier path coupled to the primary coil of the second magnetic circuit and configured to receive a quadrature signal, the main amplifier path configured to provide a quadrature output signal, the auxiliary amplifier path coupled to the primary coil of the first magnetic circuit and configured to receive an in-phase signal, the auxiliary amplifier path configured to provide an in-phase output signal, a selectable output circuit configured to selectively combine the in-phase output signal and the quadrature output signal, and a low noise amplifier (LNA) coupled to the tertiary coil of the second magnetic circuit.Type: ApplicationFiled: September 22, 2021Publication date: March 23, 2023Inventors: Chuan WANG, Li LIU, Bhushan Shanti ASURI, Gurkanwal Singh SAHOTA, Abdellatif BELLAOUAR, Vinod PANIKKATH
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Publication number: 20220231642Abstract: In certain aspects, an apparatus includes a first amplifier having a first output and a second output, and a transformer. The transformer includes a first switchable inductor coupled between the first output and the second output, a first capacitor coupled in parallel with the first switchable inductor, a second switchable inductor magnetically coupled to the first switchable inductor, a second capacitor coupled in parallel with the second switchable inductor, a third switchable inductor magnetically coupled to the first switchable inductor, and a third capacitor coupled in parallel with the third switchable inductor.Type: ApplicationFiled: January 10, 2022Publication date: July 21, 2022Inventors: Te Yu KAO, Muhammad HASSAN, Abdellatif BELLAOUAR
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Patent number: 11380993Abstract: Disclosed are embodiments of a transceiver front-end configured for a reduced noise figure (NF). Each of the embodiments includes an antenna, a transmitter branch and a receiver branch all connected to an input/output pad. The transmitter branch is coupled to the input/output pad (and thereby the antenna) by an impedance transformer. Only the receiver branch is selectively electrically connected to the input/output pad (and thereby the antenna) by a switch. A common matching network between the input/output pad and the switch provides both impedance matching and electrostatic discharge protection for the switch and the low noise amplifier, thereby reducing NF. Specific embodiments are disclosed for integration into specific technologies (e.g., fully depleted silicon-on-insulator (FDSOI) technology and fin-type field effect transistor (finFET) technology).Type: GrantFiled: December 19, 2019Date of Patent: July 5, 2022Assignee: GlobalFoundries U.S. Inc.Inventor: Abdellatif Bellaouar
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Patent number: 11380988Abstract: In some aspects, an apparatus includes a transformer including a first inductor, a second inductor, and a third inductor. The apparatus also includes a power amplifier coupled to the first inductor, a first antenna coupled to a first terminal of the second inductor, a second antenna coupled to a second terminal of the second inductor, a first switch coupled between the first terminal of the second inductor and a ground, a second switch coupled between the second terminal of the second inductor and the ground, and a low-noise amplifier coupled to the third inductor.Type: GrantFiled: November 13, 2020Date of Patent: July 5, 2022Assignee: QUALCOMM IncorporatedInventors: Muhammad Hassan, Jeremy Goldblatt, Bhushan Shanti Asuri, Jeremy Darren Dunworth, Abdellatif Bellaouar, Ravi Sridhara, Jorge Garcia
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Publication number: 20220200636Abstract: We disclose multiband receivers for millimeter-wave devices, which may have reduced size and/or reduced power consumption. One multiband receiver comprises a first band path comprising a first passive mixer configured to receive a first input RF signal having a first frequency and to be driven by a first local oscillator signal having a frequency about ? the first frequency; a second band path comprising a second passive mixer configured to receive a second input RF signal having a second frequency and to be driven by a second local oscillator signal having a frequency about ? the second frequency; and a base band path comprising a third passive mixer configured to receive intermediate RF signals during a duty cycle and to be driven by a third local oscillator signal having a frequency about ? the first frequency or about ? the second frequency during the duty cycle.Type: ApplicationFiled: December 20, 2021Publication date: June 23, 2022Applicant: GLOBALFOUNDRIES INC.Inventors: Abdellatif Bellaouar, Sher Jiun Fang, Frank Zhang
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Publication number: 20220158343Abstract: In some aspects, an apparatus includes a transformer including a first inductor, a second inductor, and a third inductor. The apparatus also includes a power amplifier coupled to the first inductor, a first antenna coupled to a first terminal of the second inductor, a second antenna coupled to a second terminal of the second inductor, a first switch coupled between the first terminal of the second inductor and a ground, a second switch coupled between the second terminal of the second inductor and the ground, and a low-noise amplifier coupled to the third inductor.Type: ApplicationFiled: November 13, 2020Publication date: May 19, 2022Inventors: Muhammad HASSAN, Jeremy GOLDBLATT, Bhushan Shanti ASURI, Jeremy Darren DUNWORTH, Abdellatif BELLAOUAR, Ravi SRIDHARA, Jorge GARCIA
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Publication number: 20220018882Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.Type: ApplicationFiled: July 17, 2020Publication date: January 20, 2022Inventors: Abdellatif BELLAOUAR, Arul BALASUBRAMANIYAN, Gurkanwal Singh SAHOTA, Muhammad HASSAN, Jorge GARCIA, Bhushan Shanti ASURI, Ravi SRIDHARA, Omar Essam EL-AASSAR, Chinmaya MISHRA
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Patent number: 11228325Abstract: We disclose multiband receivers for millimeter-wave devices, which may have reduced size and/or reduced power consumption. One multiband receiver comprises a first band path comprising a first passive mixer configured to receive a first input RF signal having a first frequency and to be driven by a first local oscillator signal having a frequency about ? the first frequency; a second band path comprising a second passive mixer configured to receive a second input RF signal having a second frequency and to be driven by a second local oscillator signal having a frequency about ? the second frequency; and a base band path comprising a third passive mixer configured to receive intermediate RF signals during a duty cycle and to be driven by a third local oscillator signal having a frequency about ? the first frequency or about ? the second frequency during the duty cycle.Type: GrantFiled: March 30, 2020Date of Patent: January 18, 2022Assignee: GLOBALFOUNDRIES INC.Inventors: Abdellatif Bellaouar, Sher Jiun Fang, Frank Zhang
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Patent number: 11114736Abstract: Power combiners having increased output power, such as may be useful in millimeter-wave devices. The power combiner comprise at least two channels, wherein each channel comprises a phase alignment circuit, wherein the phase alignment circuit comprises a first differential input subcircuit comprising a first inverter and a second inverter, and a second differential input subcircuit comprising a third inverter and a fourth inverter, wherein the first inverter, the second inverter, the third inverter, and the fourth inverter each comprise a PMOS transistor and an NMOS transistor each having an adjustable back gate bias voltage. By adjusting the back gate bias voltage, the phases of the signal through each channel may be aligned, which may increase the output power of the power combiner. Methods of increasing output power of such power combiners. Systems for manufacturing devices comprising such power combiners.Type: GrantFiled: March 31, 2020Date of Patent: September 7, 2021Assignee: GLOBALFOUNDRIES INC.Inventors: See Taur Lee, Sher Jiung Fang, Abdellatif Bellaouar
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Publication number: 20210194125Abstract: Disclosed are embodiments of a transceiver front-end configured for a reduced noise figure (NF). Each of the embodiments includes an antenna, a transmitter branch and a receiver branch all connected to an input/output pad. The transmitter branch is coupled to the input/output pad (and thereby the antenna) by an impedance transformer. Only the receiver branch is selectively electrically connected to the input/output pad (and thereby the antenna) by a switch. A common matching network between the input/output pad and the switch provides both impedance matching and electrostatic discharge protection for the switch and the low noise amplifier, thereby reducing NF. Specific embodiments are disclosed for integration into specific technologies (e.g., fully depleted silicon-on-insulator (FDSOI) technology and fin-type field effect transistor (finFET) technology).Type: ApplicationFiled: December 19, 2019Publication date: June 24, 2021Applicant: GLOBALFOUNDRIES U.S. Inc.Inventor: Abdellatif Bellaouar
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Patent number: 10944437Abstract: We disclose multiband receivers for millimeter-wave devices, which may have reduced size and/or reduced power consumption. One multiband receiver comprises a first band path comprising a first passive mixer configured to receive a first input RF signal having a first frequency and to be driven by a first local oscillator signal having a frequency about ? the first frequency; a second band path comprising a second passive mixer configured to receive a second input RF signal having a second frequency and to be driven by a second local oscillator signal having a frequency about ? the second frequency; and a base band path comprising a third passive mixer configured to receive intermediate RF signals during a duty cycle and to be driven by a third local oscillator signal having a frequency about ? the first frequency or about ? the second frequency during the duty cycle.Type: GrantFiled: April 30, 2018Date of Patent: March 9, 2021Assignee: GLOBALFOUNDRIES, INC.Inventors: Abdellatif Bellaouar, Sher Jiun Fang, Frank Zhang
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Patent number: 10942255Abstract: The disclosure provides an apparatus including: a pair of signal injection transistors each having a gate terminal coupled to a differential reference signal, and a pair of cross-coupled amplifier transistors configured to amplify a voltage of the differential reference signal to yield a voltage-amplified reference signal at a local oscillator (LO) port of a mixer; an electronic oscillator having an oscillation output node coupled to the LO port of the mixer in parallel with the injection-locked buffer, and configured to generate an oscillator output for transmission to the output node based on a back gate bias voltage applied to the electronic oscillator; and an access transistor having a gate coupled to a switching node, and a back gate terminal coupled to the back gate bias voltage, wherein the access transistor is configured to enable or disable current flow through the electronic oscillator in parallel with the injection-locked buffer.Type: GrantFiled: October 11, 2018Date of Patent: March 9, 2021Assignee: GLOBALFOUNDRIES U.S. INC.Inventors: Arul Balasubramaniyan, Abdellatif Bellaouar
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Patent number: 10924058Abstract: A CMOS gain element is disclosed herein. Also disclosed herein are splitters, comprising the CMOS gain element, and local oscillator distribution circuitry comprising the splitters and the CMOS gain elements. Semiconductor devices comprising the local oscillator distribution circuitry may have smaller footprints and reduced power consumption relative to prior art devices.Type: GrantFiled: February 26, 2020Date of Patent: February 16, 2021Assignee: GLOBALFOUNDRIES INC.Inventors: Abdellatif Bellaouar, Arul Balasubramaniyan
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Publication number: 20200313269Abstract: Power combiners having increased output power, such as may be useful in millimeter-wave devices. The power combiner comprise at least two channels, wherein each channel comprises a phase alignment circuit, wherein the phase alignment circuit comprises a first differential input subcircuit comprising a first inverter and a second inverter, and a second differential input subcircuit comprising a third inverter and a fourth inverter, wherein the first inverter, the second inverter, the third inverter, and the fourth inverter each comprise a PMOS transistor and an NMOS transistor each having an adjustable back gate bias voltage. By adjusting the back gate bias voltage, the phases of the signal through each channel may be aligned, which may increase the output power of the power combiner. Methods of increasing output power of such power combiners. Systems for manufacturing devices comprising such power combiners.Type: ApplicationFiled: March 31, 2020Publication date: October 1, 2020Applicant: GLOBALFOUNDRIES INC.Inventors: See Taur Lee, Sher Jiung Fang, Abdellatif Bellaouar
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Patent number: 10790789Abstract: In an exemplary structure, a transformer has a primary side and a secondary side. Output from the primary side is coupled to the secondary side. A first power supply is connected to a center tap of the primary side of the transformer. An oscillator includes a first transistor and a second transistor. The front-gate of the first transistor is connected to the drain of the second transistor and the primary side of the transformer. The front-gate of the second transistor is connected to the drain of the first transistor and the primary side of the transformer. A third transistor is connected to the first transistor and a fourth transistor is connected to the second transistor. The third and fourth transistors inject a desired frequency to the oscillator. A voltage source is connected to the back-gate of the first transistor and the back-gate of the second transistor.Type: GrantFiled: August 26, 2019Date of Patent: September 29, 2020Assignee: GLOBALFOUNDRIES INC.Inventors: See T. Lee, Abdellatif Bellaouar