Electromagnetic compression apparatus, methods, and systems
AssigneeThe Invention Science Fund I, LLC
InventorsJohn Brian Pendry, David Schurig, David R. Smith
Life of this patent
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Abstract
Apparatus, methods, and systems provide electromagnetic compression. In some approaches the electromagnetic compression is achieved with metamaterials. In some approaches the electromagnetic compression defines an electromagnetic distance between first and second locations substantially greater than a physical distance between the first and second locations, and the first and second locations may be occupied by first and second structures (such as antennas) having an inter-structure coupling (such as a near-field coupling) that is a function of the electromagnetic distance. In some approaches the electromagnetic compression reduces the spatial extent of an antenna near field.
Claims25
An apparatus, comprising:
- a substantially-transparent electromagnetic compression structure having at least one surface that is substantially nonreflecting of electromagnetic waves in at least one frequency band with at least one selected polarization, the substantially-transparent electromagnetic compression structure operable to enhance an effective geometric attenuation of diverging electromagnetic waves incident on the at least one surface.
A system, comprising:
- an antenna operable in proximity to an electromagnetically responsive structure;
- communications circuitry configured to receive or transmit via the antenna;
- and
- a substantially-nonreflective and substantially-transparent electromagnetic compression structure operable to provide a reduced inter-structure coupling between the antenna and the electromagnetically responsive structure.
A system, comprising:
- a plurality of electromagnetic responsive structures including one or more antennas;
- communications circuitry configured to receive or transmit via the one or more antennas;
- and
- one or more substantially-nonreflective and substantially-transparent electromagnetic compression structures operable to provide reduced inter-structure couplings between at least some pairs of electromagnetically responsive structures selected from of the plurality of electromagnetically responsive structures.
Dependencies are inferred from the claim text.