Patents by Inventor Miles E. Butcher

Miles E. Butcher 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).

  • Omnidirectional antenna with hollow point source feed
    Patent number: 4825222
    Abstract: An omnidirectional antenna comprises a ring-shaped subreflector surrounding an omnidirectional feed and a ring-shaped main reflector for redirecting radiation from the subsidiary reflector to the target zone. The feed has a focal ring and a hollow centre to accommodate supports, feeders etc which facilitates stacking of antennas.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: April 25, 1989
    Assignee: British Telecommunications PLC
    Inventor: Miles E. Butcher
  • Attenuation of microwave signals
    Patent number: 4786915
    Abstract: It is sometimes necessary to reduce the power of microwave transmissions, e.g. to avoid overloading a receiver or to reduce a transmitter's potential to cause interference. The invention reduces the power by inserting radiation absorbent material into the aperture of the antenna. In the preferred embodiment a membrane of absorbent plastics is stretched across the aperture of the dish reflector.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: November 22, 1988
    Assignee: British Telecommunications public limited company
    Inventors: Norman E. Cartwright, Miles E. Butcher
  • Transportable antenna for an earth station
    Patent number: 4761655
    Abstract: The antenna (e.g., a transportable, lightweight and cheap antenna for temporary earth stations) is constructed out of three components. The center component is a circular/parabolic dish. The side components extend the dish to give the composite a major diameter and a minor diameter. In use the antenna is aligned so that the major diameter is aligned with the direction of the geostationary arc.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: August 2, 1988
    Assignee: British Telecommunications plc
    Inventor: Miles E. Butcher