Multipath-enabled super-resolution for rf and microwave communication using phase-conjugate arrays

We demonstrate experimentally that phase-conjugate techniques can be used to achieve super-resolution focusing of electromagnetic waves in a multipath indoor environment at 2.45 GHz. The focusing phenomena was used to direct independent signals to two locations separated by approximately one-half wa...

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Bibliographic Details
Published in:Physical review letters 2004-12, Vol.93 (24), p.243904.1-243904.4, Article 243904
Main Authors: HENTY, Benjamin E, STANCIL, Daniel D
Format: Article
Language:English
Subjects:
Applied classical electromagnetism
Applied sciences
Electromagnetic wave propagation, radiowave propagation
Electromagnetism
electron and ion optics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Information, signal and communications theory
Optics
Physics
Telecommunications and information theory
Telecommunications: signal transmission and processing
communication satellites
Wave optics
Wave propagation, transmission and absorption
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Summary:We demonstrate experimentally that phase-conjugate techniques can be used to achieve super-resolution focusing of electromagnetic waves in a multipath indoor environment at 2.45 GHz. The focusing phenomena was used to direct independent signals to two locations separated by approximately one-half wavelength, thereby creating two simultaneous channels at the same frequency. An increase in channel capacity is shown to be achievable by an experimental transmission of a 1 Mbps signal over two channels created using a four element phase-conjugate array.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.243904