Patents by Inventor Chandrakanth Reddy Chappidi

Chandrakanth Reddy Chappidi 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).

  • Frequency and back-off reconfigurability in mm-wave power amplifiers
    Patent number: 10063191
    Abstract: A power amplifier system for amplifying an input having a carrier frequency having an amplitude. The system includes a plurality of n amplifiers coupled to an asymmetrical combiner formed of a passive network, each amplifier has an input and an output, the asymmetrical combiner has a plurality of inputs and an output, the output of each amplifier is coupled to an input of the asymmetrical combiner, an impedance viewed at the output of each of the n amplifiers is a function of the amplitude and phase at each of the other n?1 amplifiers. An amplitude/phase controller is coupled to the plurality of n amplifiers or the asymmetrical combiner to control the amplitude/phase at the asymmetrical combiner input. The amplitude/phase controller is configured to present an amplitude/phase at each input of the asymmetrical combiner to target an optimal impedance at the carrier frequency for each of the plurality of n amplifiers.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 28, 2018
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi
  • FREQUENCY AND BACK-OFF RECONFIGURABILITY IN MM-WAVE POWER AMPLIFIERS
    Publication number: 20170279414
    Abstract: A power amplifier system for amplifying an input having a carrier frequency having an amplitude. The system includes a plurality of n amplifiers coupled to an asymmetrical combiner formed of a passive network, each amplifier has an input and an output, the asymmetrical combiner has a plurality of inputs and an output, the output of each amplifier is coupled to an input of the asymmetrical combiner, an impedance viewed at the output of each of the n amplifiers is a function of the amplitude and phase at each of the other n?1 amplifiers. An amplitude/phase controller is coupled to the plurality of n amplifiers or the asymmetrical combiner to control the amplitude/phase at the asymmetrical combiner input. The amplitude/phase controller is configured to present an amplitude/phase at each input of the asymmetrical combiner to target an optimal impedance at the carrier frequency for each of the plurality of n amplifiers.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 28, 2017
    Applicant: The Trustees of Princeton University
    Inventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi