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US 6,184,839 B2Granted
Large instantaneous bandwidth reflector array
AssigneeLockheed Martin Missiles & Space Company
InventorsFrank D. Butscher, William J. Dawley, Joseph T. Loane, David R. Tanner
Life of this patent
Estimating the term…
Abstract
A reflector for an antenna includes a plurality of reflector elements, each having a transmission line and an aperture at a distal end of the transmission line. Each transmission line having a length which varies in accordance with the position of each aperture relative to the antenna. The varying length of transmission creates a time delay that phases re-radiated waves.
Claims17
A reflector for an antenna comprising:
- a plurality of planar reflector elements arranged in parallel, each reflector element having a plurality of transmission lines formed in the plane of that reflector element, each transmission line having an aperture at a distal end thereof, the plurality of planar reflector elements being collapsible,
- each transmission line having a length which varies in accordance with the position of each aperture relative to the antenna.
An antenna system, comprising:
- a feed antenna;
- and
- a flat reflector made of a plurality of interfitting planar reflector elements arranged in parallel, each planar reflector element having a transmission line formed in the plane of that reflector element and an aperture at a distal end of the transmission line, each transmission line having a length which varies in accordance with the position of each aperture relative to the feed antenna, the apertures defining a reflection surface, the plurality of interfitting planar reflector elements being collapsible;
- and
- means for supporting the feed antenna in spaced relation to the reflection surface of the reflector.
2 more elements
Dependencies are inferred from the claim text.