Patents by Inventor Denton D. Riggs

Denton D. Riggs 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).

  • Simultaneous transmit and receive radar subsystem
    Patent number: 4197540
    Abstract: A radar subsystem within a radar system has a transmitter circuit for transmitting pulse modulated waves on a multiplicity of frequencies. A duplexer is electrically connected to the output of the transmitter circuit. A receiver circuit is coupled to the duplexer for receiving the pulse modulated waves of the multiplicity of frequencies while transmitting on said multiplicity of frequencies, except such frequencies being received at the same time intervals as the frequencies being transmitted.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: April 8, 1980
    Assignee: Hughes Aircraft Company
    Inventors: Denton D. Riggs, Gene A. Wagner
  • Radar system having amplitude and phase modulation and demodulation circuits
    Patent number: 4134114
    Abstract: A radar system embodies a subsystem having an amplitude and phase modulator circuit, an amplitude and phase demodulator circuit electrically connected to and feeding the modulator circuit, and a pulse generator electrically connected to and feeding the demodulator circuit. A single traveling wave tube is utilized in the transmitting portion of the subsystem.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: January 9, 1979
    Assignee: Hughes Aircraft Company
    Inventors: Denton D. Riggs, Gene A. Wagner