Patents by Inventor Andrea Y. CHEN

Andrea Y. CHEN 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: 11067702
    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. An input/output (I/O) mixer including a first multiplier and a second multiplier downconverts a modulated radio frequency wave to an intermediate frequency. The modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal, from a first digital to analog converter (DAC), and a quadrature phase signal, from a second DAC, are input to second inputs of the first multiplier and the second multiplier, respectively. A mixer imbalance between the first mixer and the second mixer is reduced using direct current (DC) bias voltages from the first DAC and the second DAC. The DC bias voltages are determined based on a first and second DAC codes of the first and second DACs. The downconverted modulated radio frequency wave is filtered.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: July 20, 2021
    Inventors: Daniel Babitch, Andrea Y. Chen, Chung Lau, Bhaskar Nallapureddy
  • Publication number: 20200408924
    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. An input/output (I/O) mixer including a first multiplier and a second multiplier downconverts a modulated radio frequency wave to an intermediate frequency. The modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal, from a first digital to analog converter (DAC), and a quadrature phase signal, from a second DAC, are input to second inputs of the first multiplier and the second multiplier, respectively. A mixer imbalance between the first mixer and the second mixer is reduced using direct current (DC) bias voltages from the first DAC and the second DAC. The DC bias voltages are determined based on a first and second DAC codes of the first and second DACs. The downconverted modulated radio frequency wave is filtered.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 31, 2020
    Inventors: Daniel Babitch, Andrea Y. Chen, Chung Lau, Bhaskar Nallapureddy
  • Patent number: 10775512
    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. The electronic device includes a processor configured to: downconvert, by an input/output (I/O) mixer including a first multiplier and a second multiplier, a modulated radio frequency wave to an intermediate frequency, where the modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal and a quadrature phase signal based on a square wave are input to second inputs of the first multiplier and the second multiplier, respectively; filter the downconverted modulated radio frequency wave; and convert the filtered downconverted modulated radio frequency wave to a digital signal.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 15, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Daniel Babitch, Andrea Y. Chen, Chung Lau, Bhaskar Nallapureddy
  • Publication number: 20190285755
    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. The electronic device includes a processor configured to: downconvert, by an input/output (I/O) mixer including a first multiplier and a second multiplier, a modulated radio frequency wave to an intermediate frequency, where the modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal and a quadrature phase signal based on a square wave are input to second inputs of the first multiplier and the second multiplier, respectively; filter the downconverted modulated radio frequency wave; and convert the filtered downconverted modulated radio frequency wave to a digital signal.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Daniel BABITCH, Andrea Y. Chen, Chung Lau, Bhaskar Nallapureddy
  • Patent number: 10317535
    Abstract: A method and apparatus is provided. The apparatus a processor configured to generate a first square wave, generate a second square wave, wherein the first square wave and the second square wave are driven by a reference frequency oscillator, modulate a radio frequency wave with the first square wave, downconvert the modulated radio frequency wave to an intermediate frequency, filter the downconverted modulated radio frequency wave, convert the filtered downconverted modulated radio frequency wave to a digital signal, and integrate the digital signal.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: June 11, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Daniel Babitch, Andrea Y. Chen, Chung Lau, Bhaskar Nallapureddy
  • Publication number: 20170285172
    Abstract: A method and apparatus is provided. The apparatus a processor configured to generate a first square wave, generate a second square wave, wherein the first square wave and the second square wave are driven by a reference frequency oscillator, modulate a radio frequency wave with the first square wave, downconvert the modulated radio frequency wave to an intermediate frequency, filter the downconverted modulated radio frequency wave, convert the filtered downconverted modulated radio frequency wave to a digital signal, and integrate the digital signal.
    Type: Application
    Filed: July 12, 2016
    Publication date: October 5, 2017
    Inventors: Daniel BABITCH, Andrea Y. CHEN, Chung LAU, Bhaskar NALLAPUREDDY