Patents by Inventor Sachin Kalia

Sachin Kalia 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: 11368124
    Abstract: An oscillator includes: a bulk-acoustic wave (BAW) resonator having a first BAW resonator terminal and a second BAW resonator terminal; and an active circuit coupled to the first and second BAW resonator terminals and having a series resonance topology with: a first transistor; a second transistor; a first resistor; a second resistor; a capacitive network coupled to first and second BAW resonator terminals and to respective current terminals of the first and second transistors; and an inductor having a first inductor terminal and a second inductor terminal, the first inductor terminal coupled to the capacitive network, and the second inductor terminal coupled to ground terminal.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: June 21, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Kalia, Tolga Dinc, Bichoy Bahr, Swaminathan Sankaran
  • Publication number: 20220173700
    Abstract: A system includes a first differential amplifier and a first transformer with a primary coil coupled to an output of the first differential amplifier and with a secondary coil coupled to a load. The system also includes a second differential amplifier and a second transformer with a primary coil coupled to an output of the second differential amplifier and with a secondary coil coupled in series with the secondary coil of the first transformer. The system also includes a tuning network coupled to a center tap node between the secondary coil of the first transformer and the secondary coil of the second transformer.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 2, 2022
    Inventors: Tolga DINC, Sachin KALIA, Swaminathan SANKARAN, Baher HAROUN
  • Patent number: 11316476
    Abstract: A frequency multiplier includes an input section to receive a quadrature phase input signal having an input frequency, a mixer section coupled to the input section by a common mode node that forms a path for the common mode signal current to flow to the mixer section and magnetically coupled to the common mode node or capacitively coupled to the input section to generate a differential switching voltage at odd multiples of twice the input frequency, which switching voltage is applied to inputs of the mixer section, and an output section magnetically coupled to the mixer section, the output section being configured to generate an output voltage having a dominate frequency and sub-dominate frequencies spaced apart by the first multiple, the dominate frequency of the output voltage being a second multiple of the input frequency, where the second multiple is greater than the first multiple. Various arrangements are provided.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 26, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Kalia, Tolga Dine, Swaminathan Sankaran
  • Patent number: 11228280
    Abstract: A device includes a MEMS resonator and oscillator circuit coupled to the MEMS resonator. The circuit includes a first transistor having a first control terminal and first and second current terminals, and a second transistor having a second control terminal and third and fourth current terminals. The circuit includes a resonator coupling network configured to inductively couple MEMS resonator terminals to the first and third current terminals, and to couple the first and third current terminals. The circuit includes a control terminal coupling network configured to couple the first and second control terminals, and to reduce a voltage swing at the first and second control terminals relative to a voltage swing at the first and third current terminals. The circuit includes a second terminal coupling network configured to couple the second and fourth current terminals. A second terminal coupling network resonant frequency is approximately that of MEMS resonator.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: January 18, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bichoy Bahr, Sachin Kalia, Swaminathan Sankaran
  • Patent number: 10855224
    Abstract: A voltage controlled oscillator (VCO) circuit is disclosed. The VCO circuit comprises a VCO tuning circuit comprising a primary inductive coil. In some embodiments, the VCO tuning circuit is configured to generate a VCO output signal at a first resonance frequency. The VCO circuit further comprises a filter circuit comprising a secondary inductive coil. In some embodiments, the filter circuit is configured to resonate at a second, different, resonance frequency, in order to filter a noise associated with the VCO tuning circuit. In some embodiments, the primary inductive coil associated with the VCO tuning circuit and the secondary inductive coil associated with the filter circuit are concentrically arranged with respect to one another. Further, in some embodiments, the primary inductive coil associated with the VCO tuning circuit and the secondary inductive coil associated with the filter circuit are magnetically decoupled with respect to one another.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 1, 2020
    Assignee: Intel Corporation
    Inventors: Sachin Kalia, Satwik Patnaik, Hyung-Jin Lee, Ram Sadhwani
  • Publication number: 20200313615
    Abstract: A voltage controlled oscillator (VCO) circuit is disclosed. The VCO circuit comprises a VCO tuning circuit comprising a primary inductive coil. In some embodiments, the VCO tuning circuit is configured to generate a VCO output signal at a first resonance frequency. The VCO circuit further comprises a filter circuit comprising a secondary inductive coil. In some embodiments, the filter circuit is configured to resonate at a second, different, resonance frequency, in order to filter a noise associated with the VCO tuning circuit. In some embodiments, the primary inductive coil associated with the VCO tuning circuit and the secondary inductive coil associated with the filter circuit are concentrically arranged with respect to one another. Further, in some embodiments, the primary inductive coil associated with the VCO tuning circuit and the secondary inductive coil associated with the filter circuit are magnetically decoupled with respect to one another.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: Sachin Kalia, Satwik Patnaik, Hyung-Jin Lee, Ram Sadhwani
  • Patent number: 9780726
    Abstract: A quadrature voltage controlled oscillator (QVCO). The QVCO includes a first node for providing a first quadrature signal, a second node for providing a second quadrature signal, a third node for providing a third quadrature signal, and a fourth node for providing a fourth quadrature signal. The QVCO further includes a first coil connected between the first node and the second node and a second coil connected between the third node and the fourth node. The first coil and second coil are positively magnetically coupled.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: October 3, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Kalia, Bradley A. Kramer, Swaminathan Sankaran
  • Publication number: 20170194909
    Abstract: A quadrature voltage controlled oscillator (QVCO). The QVCO includes a first node for providing a first quadrature signal, a second node for providing a second quadrature signal, a third node for providing a third quadrature signal, and a fourth node for providing a fourth quadrature signal. The QVCO further includes a first coil connected between the first node and the second node and a second coil connected between the third node and the fourth node. The first coil and second coil are positively magnetically coupled.
    Type: Application
    Filed: October 10, 2016
    Publication date: July 6, 2017
    Inventors: Sachin Kalia, Bradley A. Kramer, Swaminathan Sankaran
  • Publication number: 20170126177
    Abstract: A voltage controlled oscillator (VCO) for providing an oscillating output signal. The VCO includes a first inductor, and the oscillating output signal is responsive to a changing current through the first inductor. The VCO also includes a second inductor, proximate the first inductor, coupled to a first cross-coupling stage and a third inductor, proximate the first inductor, coupled to a second cross-coupling stage.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Applicant: Texas Instruments Incorporated
    Inventors: Sachin Kalia, Bradley A. Kramer, Swaminathan Sankaran
  • Patent number: 9490747
    Abstract: A quadrature voltage controlled oscillator (QVCO). The QVCO includes a first node for providing a first quadrature signal, a second node for providing a second quadrature signal, a third node for providing a third quadrature signal, and a fourth node for providing a fourth quadrature signal. The QVCO further includes a first coil connected between the first node and the second node and a second coil connected between the third node and the fourth node. The first coil and second coil are positively magnetically coupled.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: November 8, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Kalia, Bradley A. Kramer, Swaminathan Sankaran
  • Patent number: 9484858
    Abstract: A quadrature voltage controlled oscillator (QVCO) for providing an oscillating output signal. The QVCO includes a first oscillating circuit for producing a first output signal and a second output signal, those signals being a first set of antiphase signals. The QVCO also includes a second oscillating circuit for producing a first output signal and a second output signal, those signals being a second set of antiphase signals. The first oscillating circuit also has injection circuitry for injecting the second set of antiphase signals without a DC bias into the first output signal and the second output signal, and the second oscillating circuit also has injection circuitry for injecting the first set of antiphase signals without a DC bias into the third output signal and the fourth output signal.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: November 1, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Kalia, Bradley A. Kramer, Swaminathan Sankaran
  • Patent number: 9467178
    Abstract: A linear transform can be performed using a passive analog multi-stage charge re-use linear transform circuit. The passive analog multi-stage charge re-use linear transform circuit transforms an input analog circuit to generate a transformed analog output signal. The passive analog multi-stage charge re-use linear transform circuit may be included in a software defined radio (SDR), where the transformed analog output signal may be output to an analog-to-digital converter (ADC) of the SDR device so as to enable the ADC to perform wideband spectrum sensing. The passive analog multi-stage charge re-use linear transform circuit may also be included in a beamforming device so as to enable the device to perform spectral shifting and spatial shifting of signals. This passive analog multi-stage charge re-use linear transform circuit may promote reduced power consumption in comparison to other circuits while also supporting wideband applications at high sampling rates.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: October 11, 2016
    Assignee: Regents of the University of Minnesota
    Inventors: Ramesh Harjani, Bodhisatwa Sadhu, Martin D. Sturm, Sachin Kalia, Satwik Patnaik, Mohammad Elbadry
  • Patent number: 9374111
    Abstract: A linear transform can be performed using a passive analog multi-stage charge re-use linear transform circuit. The passive analog multi-stage charge re-use linear transform circuit transforms an input analog circuit to generate a transformed analog output signal. The passive analog multi-stage charge re-use linear transform circuit may be included in a software defined radio (SDR), where the transformed analog output signal may be output to an analog-to-digital converter (ADC) of the SDR device so as to enable the ADC to perform wideband spectrum sensing. The passive analog multi-stage charge re-use linear transform circuit may also be included in a beamforming device so as to enable the device to perform spectral shifting and spatial shifting of signals. This passive analog multi-stage charge re-use linear transform circuit may promote reduced power consumption in comparison to other circuits while also supporting wideband applications at high sampling rates.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: June 21, 2016
    Assignee: Regents of the University of Minnesota
    Inventors: Ramesh Harjani, Bodhisatwa Sadhu, Martin D. Sturm, Sachin Kalia, Satwik Patnaik
  • Publication number: 20150280752
    Abstract: A linear transform can be performed using a passive analog multi-stage charge re-use linear transform circuit. The passive analog multi-stage charge re-use linear transform circuit transforms an input analog circuit to generate a transformed analog output signal. The passive analog multi-stage charge re-use linear transform circuit may be included in a software defined radio (SDR), where the transformed analog output signal may be output to an analog-to-digital converter (ADC) of the SDR device so as to enable the ADC to perform wideband spectrum sensing. The passive analog multi-stage charge re-use linear transform circuit may also be included in a beamforming device so as to enable the device to perform spectral shifting and spatial shifting of signals. This passive analog multi-stage charge re-use linear transform circuit may promote reduced power consumption in comparison to other circuits while also supporting wideband applications at high sampling rates.
    Type: Application
    Filed: March 19, 2014
    Publication date: October 1, 2015
    Applicant: Regents of the University of Minnesota
    Inventors: Ramesh Harjani, Bodhisatwa Sadhu, Martin D. Sturm, Sachin Kalia, Satwik Patnaik, Mohammad Elbadry