Patents by Inventor Ted V. Burmas

Ted V. Burmas 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).

  • Rejection circuitry for variable-gain amplifiers and continuous-time filters
    Patent number: 7091783
    Abstract: Variable-gain amplifiers (VGAs) and/or continuous-time filters (CTFS) are implemented with circuitry that provides improved power-supply rejection. The power-supply rejection circuitry may include a current source and a diode-connected MOSFET that inhibit noise in the reference-voltage power supply from reaching the output nodes of the VGA or CTF. Although the present invention enables separate implementations of VGAs and CTFs, in one embodiment, a VGA function and a CTF function are implemented in a single set of (e.g., integrated) circuitry.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: August 15, 2006
    Assignee: Agere Systems Inc.
    Inventors: James A. Bailey, Ted V. Burmas, Stephen J. Franck