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US 8,508,421 B2Granted
Hardened wave-guide antenna
AssigneeElta Systems Ltd.
InventorsShaul Mishan, Reuven Bauer
Life of this patent
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Abstract
An antenna element and a phased array antenna including a plurality of such antenna elements are described. The antenna element includes a waveguide configured for operating in a below-cutoff mode and having a cavity, an exciter configured for exciting the waveguide, and a shield. The shield includes a holder arranged within the cavity, and a front plate mounted on the holder and disposed over at least a part of the exciter.
Claims20
An antenna element comprising:
- a waveguide including a cavity having an aperture;
- an exciter mounted at a bottom of the cavity and configured for exciting the waveguide;
- and
- a shield formed from a hard and strong material to provide protection to the exciter from predetermined damaging actions, the shield including:
- a holder arranged within the cavity and extending from the bottom of the cavity along the cavity depth;
- and
- a front plate mounted on the holder, and being substantially flush with the aperture and disposed over at least a part of the exciter, thereby providing said protection from predetermined damaging actions.
4 more elements
Dependencies are inferred from the claim text.