Surface/traveling wave suppressor for antenna arrays of notch radiators
AssigneeRaytheon Company
InventorsJohn M. Hadden IV, Robert G. Yaccarino, Lonny R. Walker
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Abstract
An antenna system includes an array of notch radiators, arranged in aligned rows on longitudinal axes to define a series of troughs between adjacent notch radiator rows within an aperture area, each notch radiator including a tip region. A plurality of surface/traveling wave suppressors fabricated of microwave energy absorbing material is disposed in the troughs, so that a longest suppressor dimension is transverse or nearly transverse to the array face and so that a suppressor surface is transverse or nearly transverse to the longitudinal axes.
Claims21
An antenna system comprising:
- an array of notch radiators, arranged in aligned rows on longitudinal axes to define a series of parallel troughs between adjacent notch radiator rows within an aperture area and having a array face, each notch radiator including a tip region;
- a plurality of surface/traveling wave suppressors fabricated of microwave energy absorbing material, the suppressors disposed in said troughs so that a longest suppressor dimension is transverse or nearly transverse to the array face and so that a suppressor surface is transverse or nearly transverse to the longitudinal axes.
An antenna system comprising:
- an array of notch radiators, arranged in aligned sticks on longitudinal axes to define a series of parallel troughs between adjacent notch radiator rows within an aperture area and defining a array face, each notch radiator including a tip region;
- a plurality of surface/traveling wave suppressors, comprising one or more layers for each radiator, the one or more layers fabricated of microwave energy absorbing material disposed in said troughs, so that a longest suppressor dimension is transverse or nearly transverse to the array face and so that a layer surface is transverse or nearly transverse to the longitudinal axes, wherein the plurality of suppressors are oriented to attenuate electromagnetic waves propagating along the troughs along the longitudinal axes without substantially attenuating electromagnetic waves propagating along directions other than along the longitudinal axes.
Dependencies are inferred from the claim text.