Patents Represented by Attorney, Agent or Law Firm Koppel, Jacobs, Patrick & Keybl
  • Multiplying digital-to-analog converter structures that reduce signal distortion
    Patent number: 6653961
    Abstract: Mulitplying digital-to-analog converters (MDACs) are provided that reduce signal distortion without significantly raising current demand. These goals are achieved with input structures that lower input impedances and enhance the driving of nonlinear capacitances that are generally presented by the DAC portion of these devices.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: November 25, 2003
    Assignee: Analog Devices, Inc.
    Inventors: Royal A. Gosser, Edward Perry Jordan
  • Piezoelectric energy harvester and method
    Patent number: 6407484
    Abstract: A self contained device for harvesting electrical energy from linear and rotary motion has a sensor with amplifiers for tensile stretching of a piezoelectric body with magnification of the applied force. The piezoelectric body is a monolithic plate with surface electrodes covering its top and bottom surfaces.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: June 18, 2002
    Assignee: Rockwell Technologies Inc
    Inventors: John R. Oliver, Ratnakar R. Neurgaonkar, Alex P. Moffatt, Mohsen Khoshnevisan, Jeffrey Glenn Nelson