Patents by Inventor Peter C. Gazzerro

Peter C. Gazzerro 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).

  • Active-RC filter with compensation to reduce Q enhancement
    Patent number: 7075364
    Abstract: An active filter with compensation to reduce Q-enhancement is disclosed. The filter may include a first amplifier and a second amplifier coupled to the first amplifier. The second amplifier having a negative feedback loop including a buffer having a plurality of compensation resistors. The compensation resistors may each have a value that results in the biquad filter having substantially zero Q-enhancement. The biquads may cascaded to form higher order filters.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: July 11, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Prasad Gudem, Peter C. Gazzerro
  • Exponential current generator and method
    Patent number: 6882185
    Abstract: An apparatus and method of generating a current pair Ip, Im where the ratio of the pair is exponentially related to a control signal, and where either Ip or Im is greater than or less than a minimum or maximum value includes a feedback correction circuit used to sense the value of Im or Ip. The correction circuit supplies a boost current Iboost when the sensed value of Ip or Im is less than or greater than the minimum or maximum value. Iboost is preferably maintained proportional to the difference of the desired value and Ip or Im.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: April 19, 2005
    Assignee: Qualcomm, Incorporated
    Inventors: Brett Christopher Walker, Peter C. Gazzerro