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US 7,928,900 B2Granted
Resolution antenna array using metamaterials
AssigneeAlliant Techsystems Inc.
InventorsChristopher Fuller, John R. Lamberg, John J Geddes, Michael J Gawronski
Life of this patent
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Abstract
An antenna array includes at least one transmit array comprising a plurality of metamaterial elements. The antenna array further includes at least one near-field stimulator for inputting electromagnetic signal to the transmit array so that a sub-wavelength target is illuminated with an electromagnetic wave.
Claims21
An antenna array comprising:
- at least one metamaterial transmit array, the at least one transmit array comprising a plurality of metamaterial elements, the at least one transmit array having a near-field, the plurality of metamaterial elements comprising a first lens;
- and
- at least one near-field stimulator for inputting an electromagnetic signal to the transmit array so that a sub-wavelength target is illuminated with an electromagnetic wave.
An antenna array comprising:
- at least one metamaterial transmit array, the at least one transmit array comprising a plurality of metamaterial elements, the at least one transmit array having a near-field, the plurality of metamaterial elements comprising a first lens;
- and
- at least one near-field stimulator for inputting an electromagnetic signal to the transmit array so that a sub-wavelength target is illuminated with an electromagnetic wave, wherein the electromagnetic wave has a frequency less than about 1 GHz and greater than about 50 KHz;
- at least one metamaterial receive array, the at least one receive array constructed and arranged to receive a return wave reflected from an object of interest, the return wave comprising a near-field component and a far-field component, the return wave having a frequency less than about 1 GHz and greater than about 50 KHz, the at least one receive array comprising a plurality of metamaterial elements, the plurality of metamaterial elements comprising a second lens;
- at least one near-field sensing component in operative communication with the at least one receive array;
- and
- a far-field filter circuit, the far-field filter circuit constructed and arranged to separate the far-field component and the near-field component.
4 more elements
Dependencies are inferred from the claim text.