Electromagnetic compression apparatus, methods, and systems
First Claim
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1. 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.
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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.
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Citations
25 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system, comprising:
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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.
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Specification