Antenna system with active spatial filtering surface
AssigneeHarris Corporation
InventorsWilliam D. Killen, Heriberto Delgado
Life of this patent
Estimating the term…
Abstract
A spatial filtering surface includes a dielectric substrate and a plurality of spaced, resonant dipole elements positioned on the dielectric substrate. Each dipole element has dipole ends and an associated diode for controlling amplitude taper and a reflection phase of an electromagnetic field at a selected frequency with respect to an angle of incidence to the dielectric substrate. Bias lines interconnect the dipole elements for conducting a bias current to a dipole element.
Claims53
An antenna system comprising:
- a ground plane;
- a plurality of antenna elements forming an antenna array;
- and
- a spatial filtering surface positioned adjacent the antenna array through which electromagnetic radiation to or from the antenna array passes, said spatial filtering surface comprising a dielectric substrate and a plurality of spaced, resonant dipole elements positioned on the dielectric substrate, each dipole element having dipole ends and an associated diode for controlling any amplitude taper and reflection phase relative to the ground plane and antenna elements of electromagnetic radiation at a selected frequency with respect to an angle of incidence to the dielectric substrate, and a bias circuit operative for conducting a bias current to a dipole element and any associated diode.
A multilayer spatial filtering surface used with an antenna system comprising:
- a plurality of spaced dielectric substrates each forming a spatial filtering surface layer, each spatial filtering surface layer comprising:
- a dielectric substrate;
- a plurality of spaced, resonant dipole elements positioned on the dielectric substrate, each dipole element having dipole ends and an associated diode for controlling amplitude taper and a reflection phase of electromagnetic radiation at a selected frequency with respect to an angle of incidence to the dielectric substrate, and a bias circuit operative for conducting a bias current to a dipole element and any associated diode.
A spatial filtering surface used with an antenna system comprising:
- a dielectric substrate;
- a plurality of spaced, resonant dipole elements positioned on the dielectric substrate, each dipole element having dipole ends and an associated diode for controlling amplitude taper and a reflection phase of an electromagnetic field at a selected frequency with respect to an angle of incidence to the dielectric substrate, and a bias circuit operative for conducting a bias current to a dipole element and any associated diode.
An antenna system comprising:
- a ground plane;
- a plurality of antenna elements forming an antenna array;
- and
- a spatial filtering surface positioned adjacent the antenna array through which electromagnetic radiation to or from the antenna array passes, said spatial filtering surface comprising a dielectric substrate and a plurality of spaced, resonant dipole elements positioned on the dielectric substrate, a dielectric filler positioned between each dipole element, each dipole element having dipole ends and an associated diode for controlling any amplitude taper and reflection phase relative to the ground plane and antenna elements of electromagnetic radiation at a selected frequency with respect to an angle of incidence to the dielectric substrate.
A spatial filtering surface used with an antenna system comprising:
- a dielectric substrate;
- a plurality of spaced, resonant dipole elements positioned on the dielectric substrate, a dielectric filler positioned between each dipole element, each dipole element having dipole ends and an associated diode for controlling amplitude taper and a reflection phase of an electromagnetic field at a selected frequency with respect to an angle of incidence to the dielectric substrate.
Dependencies are inferred from the claim text.