Time reversal of electromagnetic waves and telecommunication
نویسندگان
چکیده
منابع مشابه
Time reversal of electromagnetic waves.
We report the first experimental demonstration of time-reversal focusing with electromagnetic waves. An antenna transmits a 1-micros electromagnetic pulse at a central frequency of 2.45 GHz in a high-Q cavity. Another antenna records the strongly reverberated signal. The time-reversed wave is built and transmitted back by the same antenna acting now as a time-reversal mirror. The wave is found ...
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Wave propagation is a ubiquitous concept throughout physics. When the aim is to focus a wave at a given point in space or time, the resolution that can be achieved is usually limited by diffraction. However, time reversal is a method which takes advantage of multipath elements in a given channel and uses them to obtain resolution beyond the diffraction limit. This is known as super-resolution. ...
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ژورنال
عنوان ژورنال: Radio Science
سال: 2005
ISSN: 0048-6604
DOI: 10.1029/2004rs003193