Wideband antenna design for wide-scan low-profile phased arrays
AssigneeLockheed Martin Corporation
InventorTimothy Bryan Ogilvie
Life of this patent
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Abstract
An antenna cell for a wide-scan low-profile phased array system includes an antenna layer including one or more stacked conductive radiators configured to receive electromagnetic waves. The antenna cell also includes a feed layer that includes multiple rectangular slots and one or more feed structures. Each rectangular slot may excite an orthogonal polarization. The feed structures are positioned perpendicular to one another, and each of the feed structures includes a feed fork that includes a set of open-circuit stubs and is configured to tune antenna performance.
Claims16
An antenna cell for a wide-scan low-profile phased array system, the antenna cell comprising:
- an antenna layer comprising one or more stacked conductive radiators configured to receive electromagnetic waves;
- and
- a feed layer comprising a plurality of rectangular slots and at least two feed structures, wherein each of the plurality of rectangular slots is configured to excite an orthogonal polarization,
- wherein the at least two feed structures are positioned perpendicular to one another, and wherein each of the at least two feed structures comprises a feed fork, wherein each feed fork includes two teeth, each tooth ending with a corner stub, and wherein corner stubs of the two teeth have diverging ends extending away from one another.
A method for providing an antenna cell for a wide-scan low-profile phased array system, the method comprising:
- forming an antenna layer comprising one or more stacked conductive radiators configured to receive electromagnetic waves;
- and
- forming a feed layer comprising a plurality of rectangular slots and at least two feed structures,
- wherein forming the feed layer comprises:
- configuring each of the plurality of rectangular slots to excite an orthogonal polarization, and
- positioning the at least two feed structures perpendicular to one another, wherein each of the at least two feed structures comprises a feed fork, wherein each feed fork includes two teeth, each tooth ending with a corner stub, and wherein corner stubs of the two teeth have diverging ends extending away from one another.
Dependencies are inferred from the claim text.