Patents by Inventor Allan E. Ripingill

Allan E. Ripingill 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: 4039951
    Abstract: An amplitude modulator circuit that generates from digital values stored in a read only memory, envelope amplitude samples that are digitized in the ROM and are incremented out by an incrementing address counter that is clocked at a given clock rate to a digital to analog converter. The shape of the waveform envelope may be changed by selectively changing the clock rate. The modulator also has envelope correction means, wherein the amplified RF pulse envelope that may be distorted, is detected and fed back through an operational amplifier for changing the analog waveform shape modulated onto the RF signal.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: August 2, 1977
    Assignee: Cubic Industrial Corporation
    Inventors: Robert L. Bruce, Neil A. Gaughan, Allan E. Ripingill