Patents by Inventor Shiu Yu-Da

Shiu Yu-Da 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).

  • Dual-band active filter
    Patent number: 7340237
    Abstract: The present invention discloses a dual-band active filter having filtering response and positive pass-band gain. The dual-band active filter includes an input match unit for gain match of the dual-band active filter and for having a band-pass filtering response; a first gain stage electrically connected to the first input match unit for providing the flat gain of the dual-band active filter; an inter-stage unit electrically connected to the first gain stage for matching gain and for having a band-stop filter response; a second gain stage electrically connected to the inter stage unit for providing the flat gain of the dual-band active filter; and an output unit electrically connected to the second gain stage for matching the dual-band active filter and for having a low-pass filtering response.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: March 4, 2008
    Assignees: Integrated System Solution Corp.
    Inventors: Chang Sheng-Fuh, Chen Wen-Lin, Shiu Yu-Da, Chen Hung-Cheng, Tang Shu-Fen, Chen Albert
  • Dual-band active filter
    Publication number: 20070021088
    Abstract: The present invention discloses a dual-band active filter having filtering response and positive pass-band gain. The dual-band active filter includes an input match unit for gain match of the dual-band active filter and for having a band-pass filtering response; a first gain stage electrically connected to the first input match unit for providing the flat gain of the dual-band active filter; an inter-stage unit electrically connected to the first gain stage for matching gain and for having a band-stop filter response; a second gain stage electrically connected to the inter stage unit for providing the flat gain of the dual-band active filter; and an output unit electrically connected to the second gain stage for matching the dual-band active filter and for having a low-pass filtering response.
    Type: Application
    Filed: July 25, 2005
    Publication date: January 25, 2007
    Inventors: Chang Sheng-Fuh, Chen Wen-Lin, Shiu Yu-Da, Chen Hung-Cheng, Tang Shu-Fen, Chen Albert