Phased array antenna absorber and associated methods
AssigneeHarris Corporation
InventorsTimothy E. Durham, St phen B. Brown, Griffin K. Gothard
Life of this patent
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Abstract
A phased array antenna includes a substrate, and an array of dipole antenna elements are on the substrate. Each dipole antenna element includes a medial feed portion, and a pair of legs extending outwardly therefrom. Each dipole antenna element further includes a passive load, and a switch connected thereto for selectively coupling the passive load to the medial feed portion so that the dipole antenna element selectively functions as an absorber for absorbing received signals while the passive load dissipates energy associated therewith.
Claims47
A phased array antenna to be connected to a transceiver and comprising:
- a substrate;
- and
- an array of dipole antenna elements on said substrate to be connected to the transceiver, each dipole antenna element comprising
- a medial feed portion, and a pair of legs extending outwardly therefrom, and
- a load and a switch connected thereto for selectively coupling said load to the medial feed portion so that said dipole antenna element selectively functions as an absorber for absorbing received signals while said load dissipates energy associated therewith.
A phased array antenna comprising:
- a substrate;
- and
- an array of dipole antenna elements on said substrate, each dipole antenna element comprising
- a medial feed portion, and a pair of legs extending outwardly therefrom, and
- a passive load connected to the medial feed portion so that said dipole antenna element functions as an absorber for absorbing received signals while said passive load dissipates energy associated therewith, said passive load comprising at least one of a printed resistive element and a discrete resistor.
A method of making a phased array antenna that selectively functions as an absorber, the method comprising:
- providing a substrate;
- and
- forming an array of dipole antenna elements on the substrate, each dipole antenna element comprising a medial feed portion, and a pair of legs extending outwardly therefrom, and a passive load and a switch connected thereto for selectively coupling the passive load to the medial feed portion so that the dipole antenna element selectively functions as an absorber for absorbing received signals while the passive load dissipates energy associated therewith.
A phased array antenna comprising:
- a substrate;
- and
- an array of dipole antenna elements on said substrate, each dipole antenna element comprising
- a medial feed portion, and a pair of legs extending outwardly therefrom, and
- a passive load connected to the medial feed portion so that said dipole antenna element functions as an absorber for absorbing received signals while said passive load dissipates energy associated therewith;
- and
- adjacent legs of adjacent dipole antenna elements including respective spaced apart end portions having predetermined shapes and relative positioning to provide increased capacitive coupling between the adjacent dipole antenna elements.
Dependencies are inferred from the claim text.