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Published online 23 November 2002 | Nature | doi:10.1038/news021118-13
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Metamaterial bends microwaves into beam
Foam-packed copper grid broadcasts focused radiation for telecommunications.
A material that emits a focused beam of microwaves could form the basis of a new kind of directional antenna for telecommunication and satellite signals.
Microwave signals are currently marshalled into a narrow beam by broadcasting them from a parabolic reflector.
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