Patents by Inventor George R. Spaulding, Jr.

George R. Spaulding, Jr. 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).

  • Transconductance filter control system
    Patent number: 6172569
    Abstract: A transconductance filter control system for compensating for drift in transconductance of a slave transconductance amplifier in a continuous time transconductance filter including: a master transconductance amplifier having an output which is a function of its transconductance and a control input for controlling the transconductance of the master transconductance amplifier; a tuning signal source for providing a tuning signal representative of a preselected characteristic of the transconductance filter; a comparing circuit, responsive to any deviation from a predetermined difference between the tuning signal and the output of the master transconductance amplifier, representative of a deviation of the transconductance of the master transconductance amplifier, for providing a compensation signal; and a circuit for applying the compensation signal to the control input of the master transconductance amplifier and to the control input of the slave transconductance amplifier in the transconductance filter to adjus
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: January 9, 2001
    Assignee: Analog Devices, Inc.
    Inventors: Kevin J. McCall, George R. Spaulding, Jr.