Patents by Inventor Yi-Jhe Song

Yi-Jhe Song 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).

  • Multi-phase signal generator and voltage-controlled oscillator thereof
    Patent number: 8035456
    Abstract: A VCO comprising a cross-coupled transistors module and a resonant module is provided. The resonant module comprises a first transistor, second transistor, a first inductor and varactor string and a second inductor and varactor string. The first source/drain terminal of the first transistor coupled to the second reference voltage, the second source/drain terminal of the first transistor coupled to the cross-coupled transistors module and the gate terminal coupled to a bias voltage. The first source/drain terminal of the second transistor coupled to the second reference voltage, the second source/drain terminal of the second transistor coupled to the cross-coupled transistors module and the gate terminal of the second transistor coupled to the bias voltage. The first and second inductor and varactor strings coupled between the gate of the first and second transistors and a tuning voltage in serial, separately.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: October 11, 2011
    Assignee: National Taiwan University of Science and Technology
    Inventors: Sheng-Lyang Jang, Cheng-Chen Liu, Yi-Jhe Song
  • MULTI-PHASE SIGNAL GENERATOR AND VOLTAGE-CONTROLLED OSCILLATOR THEREOF
    Publication number: 20110241788
    Abstract: A VCO comprising a cross-coupled transistors module and a resonant module is provided. The resonant module comprises a first transistor, second transistor, a first inductor and varactor string and a second inductor and varactor string. The first source/drain terminal of the first transistor coupled to the second reference voltage, the second source/drain terminal of the first transistor coupled to the cross-coupled transistors module and the gate terminal coupled to a bias voltage. The first source/drain terminal of the second transistor coupled to the second reference voltage, the second source/drain terminal of the second transistor coupled to the cross-coupled transistors module and the gate terminal of the second transistor coupled to the bias voltage. The first and second inductor and varactor strings coupled between the gate of the first and second transistors and a tuning voltage in serial, separately.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 6, 2011
    Applicant: National Taiwan University of Science and Technology
    Inventors: Sheng-Lyang Jang, Cheng-Chen Liu, Yi-Jhe Song