Patents by Inventor George W. Travis

George W. Travis 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 predistorter for linearity compensation
    Patent number: 4453133
    Abstract: A wideband amplifier utilizes predistortion components developed by an amplifying device (14) similar to the power amplifying device (15) to provide effective linearization for substantially reducing all of the intermodulation distortion products. Since the compensation is provided at the input to the power amplifier, the need for an output signal combiner is obviated so that the total power is available at the output. The efficiency is also enhanced since the predistortion amplifier (14) which operates from the input signal ony need be a voltage amplifier. An optional feedback circuit is disclosed which may be employed to reduce nonlinearities further if necessary.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: June 5, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: George W. Travis