Patents by Inventor Xunsong Yin

Xunsong Yin 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).

  • LNB frequency down conversion integrated circuit and chip, LNB frequency down conversion circuit and method
    Patent number: 8913702
    Abstract: The present invention discloses a type of LNB frequency down conversion integrated circuit. The present invention frequency-down-converts the RF signal with the Quadrature local oscillation signal (LO) and Quadrature Mixer. Then the 90 degree phase-shifting of the quadrature intermediate frequency (IF) signal after mixed is done by the use of passive Polyphase filter. The present invention further discloses a LNB frequency down conversion chip, a LNB frequency down circuit adopting the LNB frequency down conversion chip circuit and a method of LBN frequency down. The invention ensures the elimination of the minor image signal and the realization of the minor image suppression function.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: December 16, 2014
    Assignee: RDA Technologies Limited
    Inventors: Shunran Wei, Xunsong Yin
  • LNB FREQUENCY DOWN CONVERSION INTEGRATED CIRCUIT AND CHIP, LNB FREQUENCY DOWN CONVERSION CIRCUIT AND METHOD
    Publication number: 20130202071
    Abstract: The present invention discloses a type of LNB frequency down conversion integrated circuit. The present invention frequency-down-converts the RF signal with the Quadrature local oscillation signal (LO) and Quadrature Mixer. Then the 90 degree phase-shifting of the quadrature intermediate frequency (IF) signal after mixed is done by the use of passive Polyphase filter. The present invention further discloses a LNB frequency down conversion chip, a LNB frequency down circuit adopting the LNB frequency down conversion chip circuit and a method of LBN frequency down. The invention ensures the elimination of the minor image signal and the realization of the minor image suppression function.
    Type: Application
    Filed: May 10, 2011
    Publication date: August 8, 2013
    Applicant: RDA TECHNOLOGIES LIMITED
    Inventors: Shunran Wei, Xunsong Yin