Patents by Inventor Xiaoke Wen

Xiaoke Wen 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: 9473165
    Abstract: Reducing signal dependence for a reference voltage of a CDAC includes: splitting a decoupling capacitor into a plurality of capacitors smaller in size than a size of the decoupling capacitor; isolating at least one of the plurality of capacitors from a sampling buffer coupled to the reference voltage during a conversion phase; and supplying an appropriate amount of charge needed to replenish charge drawn by capacitors in the CDAC at each conversion step using a charge pump to pump in a dummy charge to the CDAC so that resulting configurations of the CDAC draw substantially similar amount of charge for each code change of the each conversion step.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: October 18, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Seyed Arash Mirhaj, Sameer Wadhwa, Dinesh Jagannath Alladi, Kentaro Yamamoto, Xiaoke Wen, Masoud Ensafdaran, Weihua Chen
  • Publication number: 20160056833
    Abstract: Reducing signal dependence for a reference voltage of a CDAC includes: splitting a decoupling capacitor into a plurality of capacitors smaller in size than a size of the decoupling capacitor; isolating at least one of the plurality of capacitors from a sampling buffer coupled to the reference voltage during a conversion phase; and supplying an appropriate amount of charge needed to replenish charge drawn by capacitors in the CDAC at each conversion step using a charge pump to pump in a dummy charge to the CDAC so that resulting configurations of the CDAC draw substantially similar amount of charge for each code change of the each conversion step.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 25, 2016
    Inventors: Seyed Arash Mirhaj, Sameer Wadhwa, Dinesh Jagannath Alladi, Kentaro Yamamoto, Xiaoke Wen, Masoud Ensafdaran, Weihua Chen