Patents by Inventor Rahul Karmaker

Rahul Karmaker 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).

  • CLASS AB AMPLIFIER
    Publication number: 20160373062
    Abstract: A class AB amplifier may include an input stage, a first folded cascode stage, a second folded cascode stage, and a class AB output stage. In some embodiments, the class AB output stage may provide differential output signals. The common-mode voltage of the differential output signals may be controlled via a correction signal coupled to a selected folded cascode stage. The correction signal may control the common-mode voltage of the differential output signals by altering bias currents within the selected folded cascode stage. The other cascode stage may include bias currents controlled by relatively fixed bias voltages.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 22, 2016
    Inventors: Ayush Mittal, Gireesh Rajendran, Rahul Karmaker
  • Compensated common-mode feedback for an amplifier
    Patent number: 9385672
    Abstract: A common-mode feedback module is disclosed for controlling feedback in an amplifier, such as a multi-stage amplifier. The common-mode feedback module may include a feedback input stage, a cascode stage, and a feedback output stage. The common-mode feedback module may provide feedback, such as negative feedback to the amplifier to extend a bandwidth of a frequency response and/or increase stability.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: July 5, 2016
    Assignee: QUALCOMM Incorporated
    Inventor: Rahul Karmaker
  • COMPENSATED COMMON-MODE FEEDBACK FOR AN AMPLIFIER
    Publication number: 20160149546
    Abstract: A common-mode feedback module is disclosed for controlling feedback in an amplifier, such as a multi-stage amplifier. The common-mode feedback module may include a feedback input stage, a cascode stage, and a feedback output stage. The common-mode feedback module may provide feedback, such as negative feedback to the amplifier to extend a bandwidth of a frequency response and/or increase stability.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 26, 2016
    Inventor: Rahul Karmaker