Patents by Inventor John Rodger Green

John Rodger Green 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).

  • Reducing radio transmitter distortion
    Patent number: 6215986
    Abstract: Correction/controlling of amplitude errors in radio transmission is by application of negative feedback to mixer plus power amplifier stages. Incoming signals to the mixer, typically from RF exciter or IF stage, have a modulating envelope. Envelope of mixer modulated carrier signals from the amplifier is detected and applied in anti-phase as negative feedback to the mixer input.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: April 10, 2001
    Assignee: Nortel Networks Corporation
    Inventor: John Rodger Green