Patents by Inventor Paul R. Karmel

Paul R. Karmel 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).

  • Right circular cylindrical sector cavity filter
    Patent number: 4267537
    Abstract: A compact low loss microwave filter is disclosed which utilizes an angular section of a right circular cylindrical cavity at the resonance structure excited in the circular electric TE.sub.0mn mode. The individual sectors may be electrically or magnetically coupled through common walls to obtain various filter characteristics.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: May 12, 1981
    Assignee: Communications Satellite Corporation
    Inventor: Paul R. Karmel