Patents by Inventor Merlin R. Green

Merlin R. Green 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).

  • Digital compensation of a nonlinear system
    Patent number: 8644437
    Abstract: A method for digital compensation of a nonlinear system comprises identifying a plurality of circuit parameters of a nonlinear system. Each circuit parameter determines a nonlinear response of the nonlinear system. A first circuit parameter is chosen from the plurality of circuit parameters. The first circuit parameter determines a first effect on the nonlinear response. The first effect is at least as large a second effect from a second circuit parameter from the plurality of circuit parameters. At least one stimulus is applied to the nonlinear system. The nonlinear response of the nonlinear system is measured in response to the at least one stimulus. A compensation architecture is synthesized to substantially linearize the nonlinear response. The compensation architecture receives the nonlinear response of the nonlinear system and provides a substantially linear response.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: February 4, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Helen H. Kim, Merlin R. Green, Benjamin A. Miller, Andrew K. Bolstad, Andrew R. Chen, Daniel D. Santiago
  • Phase-locked loop frequency synthesizer
    Patent number: 8242818
    Abstract: Described is a frequency synthesizer having a wide output frequency range and small frequency tuning steps. In-band spurious components are maintained at low levels and phase noise is significantly reduced. The frequency synthesizer can be fabricated as an integrated circuit device having a small area and low power dissipation. The frequency synthesizer can be used in wideband frequency systems to reduce cost and size by replacing multiple frequency synthesizers each devoted to a portion of the overall system frequency range.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 14, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Helen H. Kim, Matthew D. Cross, Merlin R. Green, Daniel D. Santiago
  • DIGITAL COMPENSATION OF A NONLINEAR SYSTEM
    Publication number: 20120176191
    Abstract: A method for digital compensation of a nonlinear system comprises identifying a plurality of circuit parameters of a nonlinear system. Each circuit parameter determines a nonlinear response of the nonlinear system. A first circuit parameter is chosen from the plurality of circuit parameters. The first circuit parameter determines a first effect on the nonlinear response. The first effect is at least as large a second effect from a second circuit parameter from the plurality of circuit parameters. At least one stimulus is applied to the nonlinear system. The nonlinear response of the nonlinear system is measured in response to the at least one stimulus. A compensation architecture is synthesized to substantially linearize the nonlinear response. The compensation architecture receives the nonlinear response of the nonlinear system and provides a substantially linear response.
    Type: Application
    Filed: September 8, 2011
    Publication date: July 12, 2012
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Helen H. Kim, Merlin R. Green, Benjamin A. Miller, Andrew K. Bolstad, Andrew R. Chen, Daniel D. Santiago
  • PHASE-LOCKED LOOP FREQUENCY SYNTHESIZER
    Publication number: 20110148484
    Abstract: Described is a frequency synthesizer having a wide output frequency range and small frequency tuning steps. In-band spurious components are maintained at low levels and phase noise is significantly reduced. The frequency synthesizer can be fabricated as an integrated circuit device having a small area and low power dissipation. The frequency synthesizer can be used in wideband frequency systems to reduce cost and size by replacing multiple frequency synthesizers each devoted to a portion of the overall system frequency range.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Helen H. Kim, Matthew D. Cross, Merlin R. Green, Daniel D. Santiago