Patents by Inventor Swaminathan Sankaran

Swaminathan Sankaran 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: 20210065830
    Abstract: A track and hold circuit includes a signal input terminal, a clock input terminal, an output terminal, a transistor, and a bootstrapping circuit with a transformer. The transistor includes a source, a drain, and a gate, where the source is coupled to the signal input terminal, and the drain is coupled to the output terminal. The transformer includes a primary winding coupled to the clock input terminal, and a secondary winding. The secondary winding is coupled between the source and the gate to control a gate-source voltage of the transistor.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Applicant: Texas Instruments Incorporated
    Inventors: Ashwin Raghunathan, Marco Corsi, Baher Haroun, Seyed Miaad Seyed Aliroteh, Swaminathan Sankaran, Robert Floyd Payne
  • Patent number: 10886590
    Abstract: An interposer that acts as a buffer zone between a transceiver IC and a dielectric waveguide interconnect is used to establish two well defined reference planes that can be optimized independently. The interposer includes a block of material having a first interface region to interface with an antenna coupled to an integrated circuit (IC) and a second interface region to interface to the dielectric waveguide. An interface waveguide is formed by a defined region positioned within the block of material between the first interface region and the second interface region.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: January 5, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Baher Haroun, Juan Alejandro Herbsommer, Gerd Schuppener, Swaminathan Sankaran
  • Publication number: 20200321677
    Abstract: A device includes a multilayer substrate having a first surface and a second surface opposite the first surface. An integrated circuit is mounted on the second surface of the multilayer substrate, the integrated circuit having transmission circuitry configured to process millimeter wave signals. A substrate waveguide having a substantially solid wall is formed within a portion of the multilayer substrate perpendicular to the first surface. The substrate waveguide has a first end with the wall having an edge exposed on the first surface of the multilayer substrate. A reflector is located in one of the layers of the substrate and is coupled to an edge of the wall on an opposite end of the substrate waveguide.
    Type: Application
    Filed: December 17, 2019
    Publication date: October 8, 2020
    Inventors: Hassan Omar Ali, Juan Alejandro Herbsommer, Benjamin Stassen Cook, Vikas Gupta, Athena Lin, Swaminathan Sankaran
  • Patent number: 10775422
    Abstract: A device includes a substrate that includes a resonant cavity. The resonant cavity includes a plurality of dipolar molecules that have an absorption frequency. The resonant cavity resonates at a frequency that is equal to the absorption frequency of the dipolar molecules. The device further includes a first port on the resonant cavity configured to receive a radio frequency (RF) signal.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: September 15, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Adam Joseph Fruehling, Juan Alejandro Herbsommer, Benjamin Stassen Cook, Swaminathan Sankaran
  • Patent number: 10763833
    Abstract: In described examples, a ring oscillator includes a series of N stages in a first ring. Each stage includes a respective output terminal coupled to a respective input terminal of a next one of the stages in the first ring. N is a positive odd-numbered integer of at least three. A series of N level shifters in a second ring are respectively connected to the N stages. Each level shifter receives a respective clock output from a respective output terminal of a stage to which it is connected and generates a respective boosted clock output in response thereto. The boosted clock output is coupled to control an impedance state of a next one of the level shifters in the second ring.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: September 1, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ernst Gerog Muellner, Tobias Fritz, Bradley Kramer, Swaminathan Sankaran, Baher Haroun, Ralf Brederlow
  • Publication number: 20200235786
    Abstract: A removable module includes circuitry, a near field communication (NFC) coupler to provide a data signal to the circuitry, and a second NFC coupler to supply operating voltage to the circuitry.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 23, 2020
    Inventors: Mark William Morgan, Swaminathan Sankaran, Benjamin Stassen Cook, Ali Djabbari, Lutz Albrecht Naumann
  • Publication number: 20200212899
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to provide phase imbalance correction. An example system includes a phase detector to obtain a first signal and generate a first output, a comparator coupled to the phase detector, the comparator to generate a second output based on the first output, and an amplifier coupled to the comparator, the amplifier to adjust a first phase response of the first signal based on the second output.
    Type: Application
    Filed: September 27, 2019
    Publication date: July 2, 2020
    Inventors: Tolga Dinc, Salvatore Luciano Finocchiaro, Gerd Schuppener, Siraj Akhtar, Swaminathan Sankaran, Baher Haroun
  • Publication number: 20200212895
    Abstract: In described examples, a ring oscillator includes a series of N stages in a first ring. Each stage includes a respective output terminal coupled to a respective input terminal of a next one of the stages in the first ring. N is a positive odd-numbered integer of at least three. A series of N level shifters in a second ring are respectively connected to the N stages. Each level shifter receives a respective clock output from a respective output terminal of a stage to which it is connected and generates a respective boosted clock output in response thereto. The boosted clock output is coupled to control an impedance state of a next one of the level shifters in the second ring.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 2, 2020
    Inventors: ERNST GEROG MUELLNER, TOBIAS FRITZ, BRADLEY KRAMER, SWAMINATHAN SANKARAN, BAHER HAROUN, RALF BREDERLOW
  • Publication number: 20200162127
    Abstract: A system is provided in which a first waveguide has a first resonator coupled to an end of the first waveguide. A second waveguide has a second resonator coupled to the second waveguide. The first resonator is spaced apart from the second resonator by a gap distance. Transmission of a signal propagated by the first waveguide across the gap to the second waveguide is enhanced by a confined near field mode magnetic field produced by the first resonator in response to the propagating wave that is coupled to the second resonator.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Benjamin Stassen Cook, Swaminathan Sankaran
  • Patent number: 10623063
    Abstract: A removable module includes circuitry, a near field communication (NFC) coupler to provide a data signal to the circuitry, and a second NFC coupler to supply operating voltage to the circuitry.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: April 14, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Mark William Morgan, Swaminathan Sankaran, Benjamin Stassen Cook, Ali Djabbari, Lutz Albrecht Naumann
  • Publication number: 20200106152
    Abstract: An apparatus includes a substrate containing a cavity and a dielectric structure covering at least a portion of the cavity. The cavity is hermetically sealed. The apparatus also may include a launch structure formed on the dielectric structure and outside the hermetically sealed cavity. The launch structure is configured to cause radio frequency (RF) energy flowing in a first direction to enter the hermetically sealed cavity through the dielectric structure in a direction orthogonal to the first direction.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Inventors: Adam Joseph Fruehling, Benjamin Stassen Cook, Juan Alejandro Herbsommer, Swaminathan Sankaran
  • Patent number: 10594162
    Abstract: A system on a package (SOP) can include a galvanic isolator. The galvanic isolator can include an input stage configured to transmit an input RF signal in response to receiving an input modulated signal. The galvanic isolator can also include a resonant coupler electrically isolated from the input stage by a dielectric. The resonant coupler can be configured to filter the input RF signal and transmit an output RF signal in response to the input RF signal. The galvanic isolator can further include an output stage electrically isolated from the resonant coupler by the dielectric. The output stage can be configured to provide an output modulated signal in response to receiving the output RF signal.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: March 17, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bharadvaj Bhamidipati, Swaminathan Sankaran, Mark W. Morgan, Gregory E. Howard, Bradley A. Kramer
  • Publication number: 20200076374
    Abstract: In an example apparatus, a first transistor has a base terminal, a first current terminal and a second current terminal. The base terminal is coupled to an input voltage node. A second transistor has a control terminal, a third current terminal and a fourth current terminal. The third current terminal is coupled to the second current terminal. The fourth current terminal is coupled to a first resistor. A second resistor is coupled to the control terminal. An inductor is coupled between the first resistor and a ground terminal.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Inventors: Siraj Akhtar, Swaminathan Sankaran
  • Patent number: 10547350
    Abstract: A system is provided in which a first waveguide has a first resonator coupled to an end of the first waveguide. A second waveguide has a second resonator coupled to the second waveguide. The first resonator is spaced apart from the second resonator by a gap distance. Transmission of a signal propagated by the first waveguide across the gap to the second waveguide is enhanced by a confined near field mode magnetic field produced by the first resonator in response to the propagating wave that is coupled to the second resonator.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: January 28, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Benjamin Stassen Cook, Swaminathan Sankaran
  • Patent number: 10523175
    Abstract: Disclosed examples include digital isolator modules, isolation circuitry and low-loss multi-order bandpass filter circuits, including a capacitive coupled galvanic isolation circuit with first and second coupling capacitors individually including a first plate and a second plate, and a bond wire connecting the first plates of the coupling capacitors, a first circuit with a first inductor coupled to form a first resonant tank circuit with a first parasitic capacitor associated with the second plate of the first coupling capacitor, and a second circuit with a second inductor coupled to form a second resonant tank circuit with a second parasitic capacitor associated with the second plate of the second coupling capacitor.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: December 31, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher Haroun
  • Patent number: 10498001
    Abstract: An apparatus includes a substrate containing a cavity and a dielectric structure covering at least a portion of the cavity. The cavity is hermetically sealed. The apparatus also may include a launch structure formed on the dielectric structure and outside the hermetically sealed cavity. The launch structure is configured to cause radio frequency (RF) energy flowing in a first direction to enter the hermetically sealed cavity through the dielectric structure in a direction orthogonal to the first direction. Various types of launch structures are disclosed herein.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: December 3, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Adam Joseph Fruehling, Benjamin Stassen Cook, Juan Alejandro Herbsommer, Swaminathan Sankaran
  • Patent number: 10491198
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to provide phase imbalance correction. An example system includes a phase detector to obtain a first signal and generate a first output, a comparator coupled to the phase detector, the comparator to generate a second output based on the first output, and an amplifier coupled to the comparator, the amplifier to adjust a first phase response of the first signal based on the second output.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 26, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Tolga Dinc, Salvatore Luciano Finocchiaro, Gerd Schuppener, Siraj Akhtar, Swaminathan Sankaran, Baher Haroun
  • Publication number: 20190334220
    Abstract: A wave communication system includes an integrated circuit and a multilayered substrate. The multilayered substrate is electrically coupled to the integrated circuit. The multilayered substrate includes an antenna structure configured to transmit a circularly polarized wave in response to signals from the integrated circuit.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 31, 2019
    Inventors: Hassan Omar Ali, Juan Alejandro Herbsommer, Benjamin Cook, Swaminathan Sankaran
  • Patent number: 10461075
    Abstract: A high TCR tungsten resistor on a reverse biased Schottky diode. A high TCR tungsten resistor on an unsilicided polysilicon platform geometry. A high TCR tungsten resistor between two parallel polysilicon leads on remaining contact etch stop dielectric. A high TCR tungsten resistor embedded in a intermetal dielectric layer above a lower interconnect layer and below an upper interconnect layer. A method of forming a high TCR tungsten resistor on a reverse biased Schottky diode. A method of forming high TCR tungsten resistor on an unsilicided polysilicon platform geometry. A method of forming high TCR tungsten resistor between two parallel polysilicon leads on remaining contact etch stop dielectric. A method of forming high TCR tungsten resistor embedded in a inter metal dielectric layer above a lower interconnect layer and below an upper interconnect layer.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 29, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Russell Carlton McMullan, Binu Kamblath Pushkarakshan, Subramanian J. Narayan, Swaminathan Sankaran, Keith Edmund Kunz
  • Patent number: 10461810
    Abstract: A system is provided in which a set of modules each have a substrate on which is mounted a radio frequency (RF) transmitter and/or an RF receiver coupled to a near field communication (NFC) coupler located on the substrate. Each module has a housing that surrounds and encloses the substrate. The housing has a port region on a surface of the housing. Each module has a field confiner located between the NFC coupler and the port region on the housing configured to guide electromagnetic energy emanated from the NFC coupler through the port region to a port region of an adjacent module. A reflective surface is positioned adjacent the backside of each NFC coupler to reflect back side electromagnetic towards the port region.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: October 29, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Benjamin Stassen Cook, Nathan Brooks, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun