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US 5,227,808 AGranted
Wide-band L-band corporate fed antenna for space based radars
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorMark B. Davis
Life of this patent
Estimating the term…
Abstract
A large antenna array is constructed in sub-arrays which are supported in a stacked and folded (stowed) condition, and then deployed by first unfolding and then expanding the stack. The sub-arrays are compressed together to yield a very compact stowed configuration, due to the absence of a continuous ground planes. The compressed sub-arrays are contained within a foldable cage like frame.
Claims2
In a collapsible antenna array having no ground plane, the combination comprising:
- a plurality of planar sub-arrays, each of said sub-arrays comprising an elongated, thin, flexible substrate having a plurality of antenna elements printed thereon;
- a feed strip comprising a second flexible substrate having feedlines thereon for supplying R.F. energy to said antenna elements of said sub-arrays, said sub-arrays being mounted in spaced parallel relationship on said second substrate, said second substrate being foldable when said sub-arrays are compressed in a direction transverse to said parallel relationship, whereby said antenna array can be stored in a compressed state.
Dependencies are inferred from the claim text.