Patents by Inventor Robert F. Snyder, Jr.

Robert F. Snyder, Jr. 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).

  • Tunable microstrip patch antenna and feed network therefor
    Patent number: 5943016
    Abstract: A patch antenna is provided with one or more tuning strips spaced therefrom and RF switches to connect or block RF currents therebetween. When a conducting path for RF current is connected between the tuning strips and the patch, the tuning strips increase the effective length of the patch and lower the antenna's resonant frequency, thereby allowing the antenna to be frequency tuned electrically over a relatively broadband of frequencies. If the tuning strips are connected to the patch in other than a symmetrical pattern, the antenna pattern of the antenna can be changed. A feed network couples RF to the antenna and includes two hybrid couplers, one for providing the correct amplitude and phase of excitation at the feed probes, and the second for effectively dissipating reflected power due to antenna impedance mismatch.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: August 24, 1999
    Assignee: Atlantic Aerospace Electronics, Corp.
    Inventors: Robert F. Snyder, Jr., James D. Lilly, Andrew Humen, Jr.
  • Radiation upset threshold detector apparatus
    Patent number: 4563641
    Abstract: Described herein is a radiation upset threshold detector apparatus for measuring the output from a circuit that is operating in a radiation environment to determine when the radiation upset threshold is exceeded for the circuit.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: January 7, 1986
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Edmund J. Vitek, Robert O. Cherney, Robert F. Snyder, Jr.