Patents by Inventor Gregory J. Ernst

Gregory J. Ernst 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).

  • Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
    Patent number: 4972440
    Abstract: Transmitter for transmitting communication traffic via phase modulated carrier signals. The device provides for an efficient amplification of a phase modulated carrier signal using Class C amplifier technology. An envelope function is applied to the carrier signal by modulating the Class C amplifier with a related spectrum-suppressing amplitude envelope signal. Phase distortion accompanying the amplitude modulation of the Class C amplifier is compensated by generating a phase offset for the carrier signal. As each envelope function for suppressing the spectrum is generated, a corresponding phase offset may be applied to the carrier signal, avoiding the consequences of phase shift resulting from amplitude modulating the carrier signal in the Class C amplifier.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: November 20, 1990
    Assignee: Hughes Aircraft Company
    Inventors: Gregory J. Ernst, Daniel M. Fraley, Jr.