Patents by Inventor Jianlei SHI

Jianlei SHI 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).

  • Signal generator with image rejection
    Patent number: 9548774
    Abstract: A method and apparatus are disclosed for generating a quadrature signal that may be used to modulate and/or demodulate communication signals transmitted between communication devices. A quadrature signal generator may include a control block, a mixer, and a filter. The control block may generate a reference signal and a filter control signal based on an input clock signal. The mixer may generate a mixer output signal based on the input clock signal and the reference signal. The filter, controlled by the filter control signal, may filter the mixer output signal to suppress a band of frequencies within the mixer output signal.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: January 17, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Saihua Lin, Jianlei Shi
  • Reducing mismatch caused by power/ground routing in multi-core VCO structure
    Patent number: 9473067
    Abstract: Reducing coupling and mismatch in multi-core VCOs, including: arranging a plurality of inductors in a plurality of VCO cores in a parallel differential inductor configuration with shared leads to form a single node, wherein the plurality of inductors includes at least a first inductor and a second inductor; connecting power/ground traces to the first inductor from a first side only; and connecting the power/ground traces to the second inductor from another side different from the first side only to avoid making a current loop.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: October 18, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jianlei Shi, Jeongsik Yang, Young Gon Kim
  • SIGNAL GENERATOR WITH IMAGE REJECTION
    Publication number: 20160248460
    Abstract: A method and apparatus are disclosed for generating a quadrature signal that may be used to modulate and/or demodulate communication signals transmitted between communication devices. A quadrature signal generator may include a control block, a mixer, and a filter. The control block may generate a reference signal and a filter control signal based on an input clock signal. The mixer may generate a mixer output signal based on the input clock signal and the reference signal. The filter, controlled by the filter control signal, may filter the mixer output signal to suppress a band of frequencies within the mixer output signal.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 25, 2016
    Inventors: Saihua Lin, Jianlei Shi
  • Transformer feedback voltage controlled oscillator (VCO)
    Patent number: 9385650
    Abstract: A transformer is described. The transformer includes a primary coil and a first secondary coil. A first coupling occurs between the first secondary coil and the primary coil. The transformer also includes a second secondary coil. A second coupling occurs between the second secondary coil and the primary coil. The first secondary coil is separated from the second secondary coil to prevent coupling between the first secondary coil and the second secondary coil. A first width of the first secondary coil is configured independently of a second width of the second secondary coil.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 5, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jianlei Shi, Yongwang Ding, Jeongsik Yang, Mazhareddin Taghivand, Sang-Oh Lee, Young Gon Kim
  • REDUCING MISMATCH CAUSED BY POWER/GROUND ROUTING IN MULTI-CORE VCO STRUCTURE
    Publication number: 20150295535
    Abstract: Reducing coupling and mismatch in multi-core VCOs, including: arranging a plurality of inductors in a plurality of VCO cores in a parallel differential inductor configuration with shared leads to form a single node, wherein the plurality of inductors includes at least a first inductor and a second inductor; connecting power/ground traces to the first inductor from a first side only; and connecting the power/ground traces to the second inductor from another side different from the first side only to avoid making a current loop.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jianlei SHI, Jeongsik YANG, Young Gon KIM
  • TRANSFORMER FEEDBACK VOLTAGE CONTROLLED OSCILLATOR (VCO)
    Publication number: 20150214891
    Abstract: A transformer is described. The transformer includes a primary coil and a first secondary coil. A first coupling occurs between the first secondary coil and the primary coil. The transformer also includes a second secondary coil. A second coupling occurs between the second secondary coil and the primary coil. The first secondary coil is separated from the second secondary coil to prevent coupling between the first secondary coil and the second secondary coil. A first width of the first secondary coil is configured independently of a second width of the second secondary coil.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 30, 2015
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jianlei SHI, Yongwang DING, Jeongsik YANG, Mazhareddin TAGHIVAND, Sang-Oh LEE, Young Gon KIM