Patents by Inventor Archie W. Crook

Archie W. Crook 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).

  • Microwave transmitting and receiving arrangements
    Patent number: 4673896
    Abstract: A radar system having a common antenna for transmitting and receiving signals conventionally includes a branch duplexer which is bulky and inconvenient.By using a waveguide section having an antenna port at one end and a receiver port at the other, and including a protection unit comprising p.i.n. diodes these difficulties are reduced. The diodes prevent transmitted energy from a magnetron reaching the receiver port but allow received energy, because of its lower amplitude, to pass.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: June 16, 1987
    Assignee: English Electric Valve Company, Limited
    Inventors: Michael B. C. Brady, Archie W. Crook