Patents by Inventor Bradley Allen Kramer

Bradley Allen Kramer 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).

  • Patent number: 10969746
    Abstract: In described examples, a physics cell includes: a laser source configured to emit light towards an atomic chamber containing an atomic gas; a photodetector configured to receive emissions from the atomic chamber; and a field coil for generating a magnetic field in the atomic chamber. An electronics circuit includes: a controller circuit coupled to the photodetector output and having control outputs to a digital to analog converter circuit; the digital to analog converter circuit having a coil current output to adjust the magnetic field, a modulation control output to control a modulation of the light, and having an output to control a voltage controlled oscillator; and a radio-frequency output circuit having a voltage controlled oscillator coupled to the output of the digital to analog converter circuit outputting a radio frequency signal to the laser source in the physics cell.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: April 6, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bradley Allen Kramer, Benjamin Stassen Cook, Juan Alejandro Herbsommer
  • Publication number: 20200142360
    Abstract: In described examples, a physics cell includes: a laser source configured to emit light towards an atomic chamber containing an atomic gas; a photodetector configured to receive emissions from the atomic chamber; and a field coil for generating a magnetic field in the atomic chamber. An electronics circuit includes: a controller circuit coupled to the photodetector output and having control outputs to a digital to analog converter circuit; the digital to analog converter circuit having a coil current output to adjust the magnetic field, a modulation control output to control a modulation of the light, and having an output to control a voltage controlled oscillator; and a radio-frequency output circuit having a voltage controlled oscillator coupled to the output of the digital to analog converter circuit outputting a radio frequency signal to the laser source in the physics cell.
    Type: Application
    Filed: December 30, 2019
    Publication date: May 7, 2020
    Inventors: Bradley Allen Kramer, Benjamin Stassen Cook, Juan Alejandro Herbsommer
  • 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: 10520900
    Abstract: In described examples, an apparatus includes a physics cell and an electronic circuit. The physics cell includes an atomic chamber, a laser source, a modulator, a photodetector and a field coil. The electronic circuit includes a frequency synthesizer, a controller and a digital to analog converter.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: December 31, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bradley Allen Kramer, Benjamin Stassen Cook, Juan Alejandro Herbsommer
  • 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
  • Patent number: 10425793
    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. The port region is offset laterally from the NFC coupler. The field confiner is skewed to provide a pathway between the NFC coupler and the port region.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 24, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Swaminathan Sankaran, Benjamin Stassen Cook, Nathan Brooks, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun
  • Patent number: 10389410
    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. An artificial magnetic conductor surface is positioned adjacent the backside of each NFC coupler to reflect back side electromagnetic energy with a phase shift of approximately zero degrees.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 20, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Nathan Brooks, Benjamin Stassen Cook, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher S Haroun
  • Publication number: 20190207786
    Abstract: Described examples include an integrated circuit including a receive portion to receive an encoded transmission on a line. The receive portion has: a wake mode in which the receiver is capable of receiving the encoded transmission; and a sleep mode in which the receiver is not capable of receiving the encoded transmission. A wakeup controller monitors the line for a wakeup signal and provides a signal to the receive portion to cause the receive portion to enter the wake mode when the wakeup controller receives the wakeup signal.
    Type: Application
    Filed: December 30, 2017
    Publication date: July 4, 2019
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher Haroun, Tobias Bernhard Fritz, Ernst Georg Muellner, Ralf Peter Brederlow
  • Patent number: 10320589
    Abstract: Described examples include an integrated circuit including a receive portion to receive an encoded transmission on a line. The receive portion has: a wake mode in which the receiver is capable of receiving the encoded transmission; and a sleep mode in which the receiver is not capable of receiving the encoded transmission. A wakeup controller monitors the line for a wakeup signal and provides a signal to the receive portion to cause the receive portion to enter the wake mode when the wakeup controller receives the wakeup signal.
    Type: Grant
    Filed: December 30, 2017
    Date of Patent: June 11, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher Haroun, Tobias Bernhard Fritz, Ernst Georg Muellner, Ralf Peter Brederlow
  • Patent number: 10320448
    Abstract: In described examples, an inductive structure includes first and second inductive coils to conduct respective first and second common mode currents induced by a common mode transient between: a first ground coupled to a connection between the first and second inductive coils; and a galvanically isolated second ground.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 11, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Rajaram Subramonian, Gianpaolo Lisi, Swaminathan Sankaran, Bradley Allen Kramer, Gerard Socci
  • Patent number: 10187101
    Abstract: A regenerative differential receiver includes, for example, a transformer arranged to receive a modulated differential signal. A first detector is arranged to source a first output current for indicating a first power level in response to falling voltage of a first line of the modulated differential signal. A second detector is arranged to sink a second output current for indicating a second power level in response to rising voltage of a first line of the modulated differential signal. A cross-coupled latch is arranged to latch a state in response to the first and second power levels. The cross-coupled latch provides, for example, weak non-linear regeneration for increasing receiver gain and maximum operating frequencies.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 22, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher S. Haroun
  • Publication number: 20190007486
    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. 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 tapered near field communication (NFC) field confiner located between the substrate and the port region on the housing configured to guide electromagnetic energy produced by the RF transmitter to the port region so that it can be emanated to a port region of an adjacent module.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 3, 2019
    Inventors: Benjamin Stassen Cook, Nathan Brooks, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun
  • Publication number: 20190007786
    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. The port region is offset laterally from the NFC coupler. The field confiner is skewed to provide a pathway between the NFC coupler and the port region.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 3, 2019
    Inventors: Swaminathan Sankaran, Benjamin Stassen Cook, Nathan Brooks, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun
  • Publication number: 20190007103
    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. An artificial magnetic conductor surface is positioned adjacent the backside of each NFC coupler to reflect back side electromagnetic energy with a phase shift of approximately zero degrees.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 3, 2019
    Inventors: Nathan Brooks, Benjamin Stassen Cook, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher S. Haroun
  • Publication number: 20190007101
    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: Application
    Filed: June 29, 2017
    Publication date: January 3, 2019
    Inventors: Benjamin Stassen Cook, Nathan Brooks, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun
  • Patent number: 10171578
    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. 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 tapered near field communication (NFC) field confiner located between the substrate and the port region on the housing configured to guide electromagnetic energy produced by the RF transmitter to the port region so that it can be emanated to a port region of an adjacent module.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 1, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Benjamin Stassen Cook, Nathan Brooks, Swaminathan Sankaran, Bradley Allen Kramer, Mark W. Morgan, Baher Haroun
  • Publication number: 20180278229
    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: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Applicant: Texas Instruments Incorporated
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher Haroun
  • Patent number: 10027376
    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.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: July 17, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Benjamin Stassen Cook, Juan Alejandro Herbsommer, Lutz Naumann, Mark W. Morgan, Baher Haroun
  • Publication number: 20180181076
    Abstract: In described examples, an apparatus includes: a physics cell including: a laser source configured to emit light towards an atomic chamber containing an atomic gas; a photodetector configured to receive emissions from the atomic chamber; and a coil for generating a magnetic field in the atomic chamber; and an electronics circuit, including: a controller circuit coupled to the photodetector output and having control outputs to a digital to analog converter circuit; the digital to analog converter circuit having a coil current output to adjust the magnetic field, a modulation control output to control a modulation of the light, and having an output to control a voltage controlled oscillator; and a radio-frequency output circuit having a voltage controlled oscillator coupled to the output of the digital to analog converter circuit and outputting a radio frequency signal to the laser source in the physics cell.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 28, 2018
    Inventors: Bradley Allen Kramer, Benjamin Stassen Cook, Juan Alejandro Herbsommer
  • Publication number: 20180175835
    Abstract: A regenerative differential receiver includes, for example, a transformer arranged to receive a modulated differential signal. A first detector is arranged to source a first output current for indicating a first power level in response to falling voltage of a first line of the modulated differential signal. A second detector is arranged to sink a second output current for indicating a second power level in response to rising voltage of a first line of the modulated differential signal. A cross-coupled latch is arranged to latch a state in response to the first and second power levels. The cross-coupled latch provides, for example, weak non-linear regeneration for increasing receiver gain and maximum operating frequencies.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 21, 2018
    Inventors: Swaminathan Sankaran, Bradley Allen Kramer, Baher S. Haroun