Patents by Inventor Li-Jen HOU

Li-Jen HOU 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).

  • Micromechanical resonator oscillator structure and driving method thereof
    Patent number: 9024708
    Abstract: This invention provides a micromechanical resonator oscillator structure and a driving method thereof. As power handling ability of a resonator is proportional to its equivalent stiffness, a better power handling capability is obtained by driving a micromechanical resonator oscillator at its high equivalent stiffness area. One of the embodiments of this invention is demonstrated by using a beam resonator. A 9.7-MHZ beam resonator via the high-equivalent stiffness area driven method shows better power handling capability and having lower phase noise.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 5, 2015
    Assignee: National Tsing Hua University
    Inventors: Sheng-Shian Li, Li-Jen Hou, Cheng-Syun Li
  • MICROMECHANICAL RESONATOR OSCILLATOR STRUCTURE AND DRIVING METHOD THEREOF
    Publication number: 20140002200
    Abstract: This invention provides a micromechanical resonator oscillator structure and a driving method thereof. As power handling ability of a resonator is proportional to its equivalent stiffness, a better power handling capability is obtained by driving a micromechanical resonator oscillator at its high equivalent stiffness area. One of the embodiments of this invention is demonstrated by using a beam resonator. A 9.7-MHZ beam resonator via the high-equivalent stiffness area driven method shows better power handling capability and having lower phase noise.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 2, 2014
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Sheng-Shian LI, Li-Jen HOU, Cheng-Syun LI