Patents by Inventor SANTHOSH MADHAVAN

SANTHOSH MADHAVAN 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: 9595943
    Abstract: A method and circuit for implementing a broadband resonator for resonant clock distribution, and a design structure on which the subject circuit resides are provided. The circuit includes a pair of first inductors, and a second inductor and a capacitor coupled between a respective first end of the respective first inductors. An opposite free end of the respective first inductors is connected to a respective clock transmission line and connected in parallel to a load capacitance. A frequency response of the circuit includes two poles and a zero in a frequency band of the resonant clock distribution system.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 14, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Santhosh Madhavan, Giri N. K. Rangan, Patrick I. Rosno, Timothy J. Schmerbeck
  • Publication number: 20170046470
    Abstract: Approaches for a process design kit (PDK) for designing or manufacturing an integrated circuit with a hierarchical parameterized cell (PCELL) are provided. The PDK includes at least one model parameter which indicates a layout technique of the hierarchical PCELL, at least one hierarchical PCELL parameter which indicates at least one of the layout technique of the hierarchical PCELL and a parasitic characteristic of the hierarchical PCELL, and at least one layout vs. schematic (LVS) parameter which indicates the layout technique of the hierarchical PCELL. The hierarchical PCELL includes a pair of matching transistors. The PDK is configured to simulate and output mismatch characteristics and local variation characteristics of the hierarchical PCELL based on the at least one model parameter, the at least one hierarchical PCELL, and the at least one LVS parameter.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 16, 2017
    Inventors: Radhika ALLAMRAJU, Santhosh MADHAVAN, Umashankar MAHALINGAM, Shrinivas J. PANDHARPURE, Giri N. RANGAN, Ashwin SRINIVAS
  • Publication number: 20160105161
    Abstract: A method and circuit for implementing a broadband resonator for resonant clock distribution, and a design structure on which the subject circuit resides are provided. The circuit includes a pair of first inductors, and a second inductor and a capacitor coupled between a respective first end of the respective first inductors. An opposite free end of the respective first inductors is connected to a respective clock transmission line and connected in parallel to a load capacitance. A frequency response of the circuit includes two poles and a zero in a frequency band of the resonant clock distribution system.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 14, 2016
    Inventors: Santhosh Madhavan, Giri N. K. Rangan, Patrick l. Rosno, Timothy J. Schmerbeck
  • Patent number: 8872587
    Abstract: Apparatuses for generating negative impedance compensation are provided. Embodiments include a differential amplifier having a first output and a second output; a capacitor coupled between the first output and the second output of the differential amplifier; a first negative impedance cross-coupled circuit having a first output and a second output; and a resistance control circuit coupled in series between the first output and the second output of the differential amplifier and the first output and the second output of the first negative impedance cross-coupled circuit.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: October 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Rajesh Cheeranthodi, John F. Ewen, Santhosh Madhavan, Giri N. K. Rangan, Umesh K. Shukla, Sarabjeet Singh
  • Publication number: 20140253236
    Abstract: Apparatuses for generating negative impedance compensation are provided. Embodiments include a differential amplifier having a first output and a second output; a capacitor coupled between the first output and the second output of the differential amplifier; a first negative impedance cross-coupled circuit having a first output and a second output; and a resistance control circuit coupled in series between the first output and the second output of the differential amplifier and the first output and the second output of the first negative impedance cross-coupled circuit.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: RAJESH CHEERANTHODI, JOHN F. EWEN, SANTHOSH MADHAVAN, GIRI N.K. RANGAN, UMESH K. SHUKLA, SARABJEET SINGH