Patents by Inventor William Swafford

William Swafford 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).

  • Patent number: 5428314
    Abstract: An input signal is split into two signals, one of which is provided to a distortion generator and a the other of which is provided to a three-way combiner. The distortion generator comprises a single composite amplifier stage having two nonlinear amplifiers and two 180 degree splitters. The amplifiers produce signals having both odd and even-order distortion components because the amplifiers exhibit non-linear behavior. The distortion generator produces two output signals, one of which consists of the fundamental signal and odd-order distortion components, and the other of which consists only of even-order distortion components. The three-way combiner combines these two signals with a portion of input signal at a phasing that produces a resultant output having both the odd and even-order distortions suppressed. Equalizers may be used to provide phase and/or amplitude compensation for the two signals produced by the distortion generator before providing them to the three-way combiner.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: June 27, 1995
    Assignee: Tacan Corporation
    Inventors: William Swafford, Todd Van Cleave