Patents by Inventor Hong-long Wung

Hong-long Wung 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).

  • Microstrip line parallel-coupled-resonator filter with open-and-short end
    Patent number: 6995635
    Abstract: The parallel-coupled-resonator coupled line filter with open-and-short end, comprises an input port for receiving an input signal; a bent first resonator and a bent third resonator where their both ends are open circuited; a second resonator whose both ends are shorted to ground; and an output port for outputting signal. Wherein, designing cross coupling between the third resonator and the first resonator to obtain a steep frequency response and reduce the interference of the image signal.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: February 7, 2006
    Assignee: Chung Shan Institute of Science and Technology
    Inventors: Hong-long Wung, Chi-Yang Chang, Dow-Chih Niu