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).
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Publication number: 20230422127Abstract: 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: ApplicationFiled: November 16, 2020Publication date: December 28, 2023Inventors: Hasibur Rahman, Tobias Ahlström, Stefan Engström
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Patent number: 11616438Abstract: 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: GrantFiled: December 21, 2019Date of Patent: March 28, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariel Dario Moctezuma, Gary Franklin Chard, Hasibur Rahman
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Publication number: 20220385244Abstract: 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: ApplicationFiled: August 3, 2022Publication date: December 1, 2022Inventors: Yang Xu, William Bright, Hasibur Rahman
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Publication number: 20220368576Abstract: 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: ApplicationFiled: May 13, 2021Publication date: November 17, 2022Inventors: Hasibur Rahman, Yang Xu, Ariel Dario Moctezuma
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Patent number: 11496342Abstract: 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: GrantFiled: May 13, 2021Date of Patent: November 8, 2022Assignee: Texas Instruments IncorporatedInventors: Hasibur Rahman, Yang Xu, Ariel Dario Moctezuma
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Patent number: 11476761Abstract: 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: GrantFiled: September 8, 2020Date of Patent: October 18, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
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Patent number: 11444587Abstract: 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: GrantFiled: December 17, 2020Date of Patent: September 13, 2022Assignee: Texas Instruments IncorporatedInventors: Yang Xu, William Bright, Hasibur Rahman
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Publication number: 20220225229Abstract: 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: ApplicationFiled: April 16, 2019Publication date: July 14, 2022Inventors: Hasibur RAHMAN, Tobias AHLSTRÖM
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Publication number: 20220200544Abstract: 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: ApplicationFiled: December 17, 2020Publication date: June 23, 2022Inventors: Yang Xu, William Bright, Hasibur Rahman
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Publication number: 20210194362Abstract: 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: ApplicationFiled: December 21, 2019Publication date: June 24, 2021Applicant: Texas Instruments IncorporatedInventors: Ariel Dario Moctezuma, Gary Franklin Chard, Hasibur Rahman
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Publication number: 20200403513Abstract: 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: ApplicationFiled: September 8, 2020Publication date: December 24, 2020Inventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
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Patent number: 10821922Abstract: 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: GrantFiled: July 18, 2016Date of Patent: November 3, 2020Assignee: Texas Instruments IncorporatedInventors: George Konnail, Angelo Pereira, Hasibur Rahman, Xiaochun Zhao, Artur Juliusz Lewinski
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Patent number: 10819234Abstract: 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: GrantFiled: May 31, 2019Date of Patent: October 27, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariel Dario Moctezuma, Hasibur Rahman, William Krenik, Yanqing Li
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Patent number: 10770971Abstract: 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: GrantFiled: May 31, 2019Date of Patent: September 8, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Gary Franklin Chard, Ariel Dario Moctezuma, Hasibur Rahman, Alex Kwasi Nyavor Titriku, Srinath Hosur
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Publication number: 20200099295Abstract: 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: ApplicationFiled: May 31, 2019Publication date: March 26, 2020Inventors: Ariel Dario MOCTEZUMA, Hasibur RAHMAN, William KRENIK, Yanqing LI
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Publication number: 20200099294Abstract: 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: ApplicationFiled: May 31, 2019Publication date: March 26, 2020Inventors: Gary Franklin CHARD, Ariel Dario MOCTEZUMA, Hasibur RAHMAN, Alex Kwasi Nyavor TITRIKU, Srinath HOSUR
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Patent number: 10079538Abstract: 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: GrantFiled: October 18, 2016Date of Patent: September 18, 2018Assignee: Texas Instruments IncorporatedInventors: Xiaochun Zhao, Hasibur Rahman, Artur Lewinski, Tulong Yang
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Publication number: 20180109179Abstract: 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: ApplicationFiled: October 18, 2016Publication date: April 19, 2018Inventors: XIAOCHUN ZHAO, HASIBUR RAHMAN, ARTUR LEWINSKI, Tulong Yang
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Publication number: 20180018012Abstract: 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: ApplicationFiled: July 18, 2016Publication date: January 18, 2018Inventors: GEORGE KONNAIL, ANGELO PEREIRA, HASIBUR RAHMAN, XIAOCHUN ZHAO, ARTUR JULIUSZ LEWINSKI
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Patent number: 9035458Abstract: 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: GrantFiled: January 20, 2014Date of Patent: May 19, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Scott Robert Summerfelt, Hasibur Rahman, John Paul Campbell