Patents by Inventor Hasibur Rahman

Hasibur Rahman 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: 20230422127
    Abstract: A method performed by a first network node for determining one or more cells to serve a wireless device connected to the first network node in a wireless communications network is provided. In a control connection between the first network node and a second network node, the first network node receives (1002) from the second network node, current load information for a third cell candidate, wherein the third cell candidate is served by a third network node. The first network node determines (1003) one or more cells to serve the wireless device based on the current load information of the third cell candidate.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 28, 2023
    Inventors: Hasibur Rahman, Tobias Ahlström, Stefan Engström
  • Patent number: 11616438
    Abstract: A power circuit includes a switch circuit, an auxiliary load circuit coupled to an output terminal, a switching control circuit to operate the switch circuit responsive to an error signal, a regulator circuit having a sense resistor, a comparator to provide the error signal, and a DAC to control a sense current of the sense resistor. A DAC control circuit provides a DAC input signal having a controlled ramp rate responsive to a decreasing setpoint signal, a load control circuit selectively enables the auxiliary load circuit responsive to the decreasing setpoint signal and responsive to the error signal to control the power circuit slew rate.
    Type: Grant
    Filed: December 21, 2019
    Date of Patent: March 28, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariel Dario Moctezuma, Gary Franklin Chard, Hasibur Rahman
  • Publication number: 20220385244
    Abstract: A circuit having an input and an output, the circuit comprising: a first amplifier having a first input, a second input and an output coupled to the output of the circuit; a first capacitor having a first terminal coupled to the first input of the first amplifier and a second terminal coupled to the output of the first amplifier; a first resistor having a first terminal coupled to the first input of the first amplifier and a second terminal; a buffer having an output coupled to the second terminal of the first resistor and an input; a second resistor having a first terminal coupled to the output of the first amplifier and a second terminal coupled to the input of the buffer; a second capacitor coupled between the input of the buffer and ground; and a third resistor coupled between the input of the buffer and the input of the circuit.
    Type: Application
    Filed: August 3, 2022
    Publication date: December 1, 2022
    Inventors: Yang Xu, William Bright, Hasibur Rahman
  • Publication number: 20220368576
    Abstract: An example apparatus includes: a receiver operable to receive a modulated input signal at a receiver input and output a demodulated signal at a receiver output, the receiver comprising a switch having a first current terminal and a first control terminal, the first current terminal coupled to the receiver output. The example apparatus includes a capacitor having a first terminal and a second terminal, the second terminal coupled to the first control terminal and the first terminal coupled to the receiver input. The example apparatus includes a resistor having a third terminal and a fourth terminal, the fourth terminal coupled to the first control terminal. The example apparatus includes a voltage offset source having an input and an output, the output coupled to the third terminal. The example apparatus includes a current source coupled to the first current terminal.
    Type: Application
    Filed: May 13, 2021
    Publication date: November 17, 2022
    Inventors: Hasibur Rahman, Yang Xu, Ariel Dario Moctezuma
  • Patent number: 11496342
    Abstract: An example apparatus includes: a receiver operable to receive a modulated input signal at a receiver input and output a demodulated signal at a receiver output, the receiver comprising a switch having a first current terminal and a first control terminal, the first current terminal coupled to the receiver output. The example apparatus includes a capacitor having a first terminal and a second terminal, the second terminal coupled to the first control terminal and the first terminal coupled to the receiver input. The example apparatus includes a resistor having a third terminal and a fourth terminal, the fourth terminal coupled to the first control terminal. The example apparatus includes a voltage offset source having an input and an output, the output coupled to the third terminal. The example apparatus includes a current source coupled to the first current terminal.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: November 8, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Hasibur Rahman, Yang Xu, Ariel Dario Moctezuma
  • Patent number: 11476761
    Abstract: An inductor has first and second terminals. A first switch is coupled between the first terminal and a voltage supply terminal. A second switch is coupled between the first terminal and a negative output supply terminal. A third switch is coupled between the second terminal and a positive output supply terminal. A fourth switch is coupled between the second terminal and a ground terminal. A controller is coupled to the first, second, third and fourth switches. The controller is configured to provide: an inductor charge mode; a positive boost mode; a negative boost mode; a first rest state in which the controller closes the first switch and opens the second, third and fourth switches; and a second rest state in which the controller closes the fourth switch and opens the first, second and third switches.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: October 18, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
  • Patent number: 11444587
    Abstract: A circuit having an input and an output, the circuit comprising: a first amplifier having a first input, a second input and an output coupled to the output of the circuit; a first capacitor having a first terminal coupled to the first input of the first amplifier and a second terminal coupled to the output of the first amplifier; a first resistor having a first terminal coupled to the first input of the first amplifier and a second terminal; a buffer having an output coupled to the second terminal of the first resistor and an input; a second resistor having a first terminal coupled to the output of the first amplifier and a second terminal coupled to the input of the buffer; a second capacitor coupled between the input of the buffer and ground; and a third resistor coupled between the input of the buffer and the input of the circuit.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: September 13, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Yang Xu, William Bright, Hasibur Rahman
  • Publication number: 20220225229
    Abstract: Methods performed by a network node having a first transmission mode configuration for a first cell in a radio access network may be provided. A second transmission mode configuration for a second cell may be obtained. A mobile terminal may be steered to the first or second cell based on which cell has the transmission mode configuration for supporting a higher data throughput. A method performed by a control node in a radio access network also may be provided. A first and a second transmission mode configuration may be determined for a candidate cell and a serving cell, respectively. A serving node may be configured with the first transmission mode configuration. A mobile terminal may be steered to the candidate cell or the serving cell based on which cell has the transmission mode configuration for supporting a higher data throughput.
    Type: Application
    Filed: April 16, 2019
    Publication date: July 14, 2022
    Inventors: Hasibur RAHMAN, Tobias AHLSTRÖM
  • Publication number: 20220200544
    Abstract: A circuit having an input and an output, the circuit comprising: a first amplifier having a first input, a second input and an output coupled to the output of the circuit; a first capacitor having a first terminal coupled to the first input of the first amplifier and a second terminal coupled to the output of the first amplifier; a first resistor having a first terminal coupled to the first input of the first amplifier and a second terminal; a buffer having an output coupled to the second terminal of the first resistor and an input; a second resistor having a first terminal coupled to the output of the first amplifier and a second terminal coupled to the input of the buffer; a second capacitor coupled between the input of the buffer and ground; and a third resistor coupled between the input of the buffer and the input of the circuit.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 23, 2022
    Inventors: Yang Xu, William Bright, Hasibur Rahman
  • Publication number: 20210194362
    Abstract: A power circuit includes a switch circuit, an auxiliary load circuit coupled to an output terminal, a switching control circuit to operate the switch circuit responsive to an error signal, a regulator circuit having a sense resistor, a comparator to provide the error signal, and a DAC to control a sense current of the sense resistor. A DAC control circuit provides a DAC input signal having a controlled ramp rate responsive to a decreasing setpoint signal, a load control circuit selectively enables the auxiliary load circuit responsive to the decreasing setpoint signal and responsive to the error signal to control the power circuit slew rate.
    Type: Application
    Filed: December 21, 2019
    Publication date: June 24, 2021
    Applicant: Texas Instruments Incorporated
    Inventors: Ariel Dario Moctezuma, Gary Franklin Chard, Hasibur Rahman
  • Publication number: 20200403513
    Abstract: An inductor has first and second terminals. A first switch is coupled between the first terminal and a voltage supply terminal. A second switch is coupled between the first terminal and a negative output supply terminal. A third switch is coupled between the second terminal and a positive output supply terminal. A fourth switch is coupled between the second terminal and a ground terminal. A controller is coupled to the first, second, third and fourth switches. The controller is configured to provide: an inductor charge mode; a positive boost mode; a negative boost mode; a first rest state in which the controller closes the first switch and opens the second, third and fourth switches; and a second rest state in which the controller closes the fourth switch and opens the first, second and third switches.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Inventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
  • Patent number: 10821922
    Abstract: One example includes a power control system. The power control system includes an activation controller that is powered via a first power voltage generated via a first power supply and is configured to provide an enable signal. The activation controller can assert the enable signal in response to an input activation signal to control activation of a second power supply. The second power supply can generate a second power voltage in response to the enable signal being asserted. The second power voltage can be provided to regulate power associated with ancillary electronic circuitry. The system also includes a deactivation controller that is powered via the second power voltage and is configured to generate a disable signal to de-assert the enable signal in response to one of a plurality of predetermined deactivation conditions.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: November 3, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: George Konnail, Angelo Pereira, Hasibur Rahman, Xiaochun Zhao, Artur Juliusz Lewinski
  • Patent number: 10819234
    Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: October 27, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariel Dario Moctezuma, Hasibur Rahman, William Krenik, Yanqing Li
  • Patent number: 10770971
    Abstract: A system includes an inductor and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches. The controller is configured to provide an inductor charge mode, a positive boost mode, a negative boost mode, a first rest state involving the first switch, and a second rest state involving the fourth switch.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 8, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
  • Publication number: 20200099295
    Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.
    Type: Application
    Filed: May 31, 2019
    Publication date: March 26, 2020
    Inventors: Ariel Dario MOCTEZUMA, Hasibur RAHMAN, William KRENIK, Yanqing LI
  • Publication number: 20200099294
    Abstract: A system includes an inductor and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches. The controller is configured to provide an inductor charge mode, a positive boost mode, a negative boost mode, a first rest state involving the first switch, and a second rest state involving the fourth switch.
    Type: Application
    Filed: May 31, 2019
    Publication date: March 26, 2020
    Inventors: Gary Franklin CHARD, Ariel Dario MOCTEZUMA, Hasibur RAHMAN, Alex Kwasi Nyavor TITRIKU, Srinath HOSUR
  • Patent number: 10079538
    Abstract: A circuit includes a charge pump to generate an output reference voltage. A first bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between first and second bootstrap nodes of a DC/DC converter. The first bootstrap refresh circuit supplies first charge current that is sourced from the first bootstrap node to the second bootstrap node based on a control signal indicating a first operating mode of the DC/DC converter. A second bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between the first and second bootstrap nodes of the DC/DC converter. The second bootstrap refresh circuit supplies second charge current from the second bootstrap node to the first bootstrap node based on the control signal indicating a second operating mode of the DC/DC converter.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 18, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Xiaochun Zhao, Hasibur Rahman, Artur Lewinski, Tulong Yang
  • Publication number: 20180109179
    Abstract: A circuit includes a charge pump to generate an output reference voltage. A first bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between first and second bootstrap nodes of a DC/DC converter. The first bootstrap refresh circuit supplies first charge current that is sourced from the first bootstrap node to the second bootstrap node based on a control signal indicating a first operating mode of the DC/DC converter. A second bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between the first and second bootstrap nodes of the DC/DC converter. The second bootstrap refresh circuit supplies second charge current from the second bootstrap node to the first bootstrap node based on the control signal indicating a second operating mode of the DC/DC converter.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 19, 2018
    Inventors: XIAOCHUN ZHAO, HASIBUR RAHMAN, ARTUR LEWINSKI, Tulong Yang
  • Publication number: 20180018012
    Abstract: One example includes a power control system. The power control system includes an activation controller that is powered via a first power voltage generated via a first power supply and is configured to provide an enable signal. The activation controller can assert the enable signal in response to an input activation signal to control activation of a second power supply. The second power supply can generate a second power voltage in response to the enable signal being asserted. The second power voltage can be provided to regulate power associated with ancillary electronic circuitry. The system also includes a deactivation controller that is powered via the second power voltage and is configured to generate a disable signal to de-assert the enable signal in response to one of a plurality of predetermined deactivation conditions.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 18, 2018
    Inventors: GEORGE KONNAIL, ANGELO PEREIRA, HASIBUR RAHMAN, XIAOCHUN ZHAO, ARTUR JULIUSZ LEWINSKI
  • Patent number: 9035458
    Abstract: An integrated circuit contains lower components in the substrate, a PMD layer, upper components over the PMD layer, lower contacts in the PMD layer connecting some upper components to some lower components, an ILD layer over the upper components, metal interconnect lines over the ILD layer, and upper contacts connecting some upper components to some metal interconnect lines, and also includes annular stacked contacts of lower annular contacts aligned with upper annular contacts. The lower contacts and upper contacts each have a metal liner and a contact metal on the liner. The lower annular contacts have at least one ring of liner metal and contact metal surrounding a pillar of PMD material, and the upper contacts have at least one ring of liner metal and contact metal surrounding a pillar of ILD material. The annular stacked contacts connect the metal interconnects to the lower components.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: May 19, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Scott Robert Summerfelt, Hasibur Rahman, John Paul Campbell