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US 8,803,741 B2Granted
Miniature anti-jam GPS antenna array using metamaterial
AssigneeLockheed Martin Corporation
InventorTommy Lam
Life of this patent
Estimating the term…
Abstract
Antennae are described. The antennae may be GPS antennae configured to receive GPS signals at both the L1 and L2 frequencies. The antennae may include patches and polarizers which allow the antennae to receive right-hand circularly polarized GPS signals from GPS satellites. In some situations, the polarizers may include a meta-material. The meta-material may in some situations include circuit components formed on a suitable substrate.
Claims19
An antenna, comprising:
- a plurality of circular conductive patches;
- an electrical ground plane;
- and
- a plurality of meta-material elements, wherein the plurality of meta-material elements and the plurality of circular conductive patches are paired together such that, for each circular conductive patch of the plurality of circular conductive patches, a respective meta-material element is disposed between the circular conductive patch and the electrical ground plane,
- wherein at least one of the meta-material elements comprises a first plurality of substantially planar conductive loops and a second plurality of substantially planar conductive loops, wherein each substantially planar conductive loop of the first and second pluralities of substantially planar conductive loops is substantially perpendicular to the circular patch, and wherein each substantially planar conductive loop of the first plurality of substantially planar conductive loops is substantially perpendicular to each substantially planar conductive loop of the second plurality of substantially planar conductive loops.
2 more elements
An antenna, comprising:
- a patch;
- and
- a meta-material configured to be electromagnetically coupled to the patch, the meta-material having an array of a first plurality of substantially planar conductive elements and a second plurality of substantially planar conductive elements, wherein a first substantially planar conductive element of the first plurality of substantially planar conductive elements and a second substantially planar conductive element of the second plurality of substantially planar conductive elements is oriented substantially perpendicularly to the patch, and wherein the first substantially planar conductive element is substantially perpendicular to the second substantially planar conductive element.
A dual-band antenna, comprising:
- a first patch;
- a first polarizer;
- a second patch;
- and
- a second polarizer,
- wherein, between an output of the antenna and an electrical ground plane of the antenna, the first patch, the first polarizer, the second patch, and the second polarizer are disposed in that order.
3 more elements
Dependencies are inferred from the claim text.