Patents by Inventor James B. Dorey

James B. Dorey 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).

  • Bandpass filter with plurality of wave-guide cavities
    Patent number: 4513264
    Abstract: A bandpass filter 8 has a plurality of cascaded wave-guide cavities 11, 12 1N and inter-cavity coupling means 36, 37. One or more of the cavities 12, 1N is rotated relative to an input reference mode 52. The rotation causes quasi-orthogonal coupling structures to be introduced into said cavities 11, 12 1N. The rotation of one or more cavities enables symmetric or asymmetric amplitude and phase responses to be produced as desired.The filter can be used in channel multiplexers for satellite communication systems.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: April 23, 1985
    Assignee: Com Dev Ltd.
    Inventors: James B. Dorey, Wai-Cheung Tang