Patents by Inventor Zhao Shaohua

Zhao Shaohua 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).

  • Compensation filter for cascaded-integrator-comb decimator
    Patent number: 9362890
    Abstract: The present invention is directed to systems and methods which provide an improved compensation filter, as may be used with respect to a decimator, optimally designed using a convex optimization approach. Compensation filters of embodiments of the invention may, for example, be used with respect to a CIC decimator. In accordance with embodiments of the invention, compensation filters are designed with minimum order to approximate target frequency response in the target frequency bands. Additionally or alternatively, compensation filters of embodiments are optimally designed for passband drop and stopband attenuation improvement, such as to satisfy the specified peak ripple in the passband and/or to satisfy the specified peak errors over a set of target sub-bands in the stopband.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: June 7, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventor: Zhao Shaohua
  • COMPENSATION FILTER FOR CASCADED-INTEGRATOR-COMB DECIMATOR
    Publication number: 20150333732
    Abstract: The present invention is directed to systems and methods which provide an improved compensation filter, as may be used with respect to a decimator, optimally designed using a convex optimization approach. Compensation filters of embodiments of the invention may, for example, be used with respect to a CIC decimator. In accordance with embodiments of the invention, compensation filters are designed with minimum order to approximate target frequency response in the target frequency bands. Additionally or alternatively, compensation filters of embodiments are optimally designed for passband drop and stopband attenuation improvement, such as to satisfy the specified peak ripple in the passband and/or to satisfy the specified peak errors over a set of target sub-bands in the stopband.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 19, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventor: Zhao Shaohua