Patents by Inventor Kai-Yuan Jheng

Kai-Yuan Jheng 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).

  • Patent number: 7826553
    Abstract: A multilevel LINC transmitter. The multilevel LINC transmitter comprises a multilevel signal component separator, a phase modulator block, a mixer block, an up-converter block, a predistorter and an RF block. The multilevel signal component separator comprises a multilevel scaler and converts an input signal to phase signals. The phase modulator block and the predistorter are coupled to the multilevel signal component separator. The mixer block is coupled to the phase modulator block and the predistorter. The up-converter block is coupled to the mixer block. The RF block comprises a plurality of power amplifiers coupled to the up-converter block and a power combiner coupled to the power amplifiers.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: November 2, 2010
    Assignees: Mediatek Inc., National Taiwan University
    Inventors: Yuan-Jyue Chen, Kai-Yuan Jheng, An-Yeu Wu
  • Patent number: 7724839
    Abstract: A multilevel LINC transmitter. The multilevel LINC transmitter comprises a multilevel signal component separator, a phase modulator block, and an RF block. The multilevel signal component separator comprises a multilevel scaler and converts a base band signal to constant envelope signals. The phase modulator block is coupled to the multilevel signal component separator. The RF block comprises a plurality of power amplifiers coupled to the phase modulator block and the multilevel scaler and a power combiner coupled to the power amplifiers.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: May 25, 2010
    Assignee: Mediatek Inc.
    Inventors: Yuan-Jyue Chen, Kai-Yuan Jheng, An-Yeu Wu, Hen-Wai Tsao, Posen Tseng
  • Publication number: 20080019459
    Abstract: A multilevel LINC transmitter. The multilevel LINC transmitter comprises a multilevel signal component separator, a phase modulator block, and an RF block. The multilevel signal component separator comprises a multilevel scaler and converts a base band signal to constant envelope signals. The phase modulator block is coupled to the multilevel signal component separator. The RF block comprises a plurality of power amplifiers coupled to the phase modulator block and the multilevel scaler and a power combiner coupled to the power amplifiers.
    Type: Application
    Filed: June 4, 2007
    Publication date: January 24, 2008
    Applicants: MEDIATEK INC., NATIONAL TAIWAN UNIVERISTY
    Inventors: Yuan-Jyue Chen, Kai-Yuan Jheng, An-Yeu Wu, Hen-Wai Tsao, Posen Tseng
  • Publication number: 20080019456
    Abstract: A multilevel LINC transmitter. The multilevel LINC transmitter comprises a multilevel signal component separator, a phase modulator block, a mixer block, an up-converter block, a predistorter and an RF block. The multilevel signal component separator comprises a multilevel scaler and converts an input signal to phase signals. The phase modulator block and the predistorter are coupled to the multilevel signal component separator. The mixer block is coupled to the phase modulator block and the predistorter. The up-converter block is coupled to the mixer block. The RF block comprises a plurality of power amplifiers coupled to the up-converter block and a power combiner coupled to the power amplifiers.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 24, 2008
    Applicants: MEDIATEK INC., NATIONAL TAIWAN UNIVERSITY
    Inventors: Yuan-Jyue Chen, Kai-Yuan Jheng, An-Yeu Wu