Patents by Inventor Bo-Fu Wu

Bo-Fu Wu 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).

  • Impedance matching circuit design method
    Patent number: 7100127
    Abstract: The present invention provides a method for designing an impedance matching circuit. The impedance matching circuit is for matching a power amplifier and an antenna circuit. The antenna circuit originally includes an antenna and a first antenna impedance matching circuit. For suiting the design modification of the power amplifier, the method provides a second antenna impedance matching circuit, and matches it with a first power amplifier impedance matching circuit to constitute an overall circuit. The impedance of the overall circuit forms a first locus on the Smith Chart, and is made to have a phase error meeting a predetermined specification. Next, the second power amplifier impedance matching circuit is designed and matched with the first antenna impedance matching circuit to constitute another overall circuit. And the impedance of this overall circuit forms a second locus on the Smith Chart. As the second locus overlaps the first locus, the system has a phase error meeting a predetermined specification.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: August 29, 2006
    Assignee: Benq Corporation
    Inventors: Chun-Zen Chen, Bo-Fu Wu, Chia-Hung Su
  • Impedance matching circuit design method
    Publication number: 20040128629
    Abstract: The present invention provides a method for designing an impedance matching circuit. The impedance matching circuit is for matching a power amplifier and an antenna circuit. The antenna circuit originally includes an antenna and a first antenna impedance matching circuit. For suiting the design modification of the power amplifier, the method provides a second antenna impedance matching circuit, and matches it with a first power amplifier impedance matching circuit to constitute an overall circuit. The impedance of the overall circuit forms a first locus on the Smith Chart, and is made to have a phase error meeting a predetermined specification. Next, the second power amplifier impedance matching circuit is designed and matched with the first antenna impedance matching circuit to constitute another overall circuit. And the impedance of this overall circuit forms a second locus on the Smith Chart. As the second locus overlaps the first locus, the system has a phase error meeting a predetermined specification.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Inventors: Chun-Zen Chen, Bo-Fu Wu, Chia-Hung Su