Patents by Inventor Sher J. Fang

Sher J. Fang 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: 9871531
    Abstract: Aspects of the present disclosure include a digital-to-analog converter (DAC). The DAC includes an output node and a plurality of equal sized cell transistors. Each of the plurality of equal sized cell transistors represents a distinct bit, the distinct bits including a least significant bit (LSB). The plurality of equal sized cell transistors are connected to the output node. The DAC includes at least one control circuit configured to modify a back gate voltage of one of the equal sized cell transistors representing the LSB to adjust a current output.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 16, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Sher J. Fang, Sherif H. K. Embabi
  • Patent number: 7509101
    Abstract: Methods and apparatus for reducing the amount of leakage in a transmitter are disclosed. In one embodiment, a wireless transmitter is comprises: a divider providing a local oscillation (LO) signal, a plurality of mixers that receive the LO signal and receive a signal to be modulated, a summer coupled to the plurality of mixers, and a plurality of amplifiers serially coupled to the summer. The divider couples to a capacitor, a resistor, and a power supply and the resistor and the capacitor form a pole that attenuates the LO signal present on the power supply.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: March 24, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Abdellatif Bellaouar, Alan R. Holden, Sher J. Fang