Time-Reversed Excitation of Reveberation Chambers: Improving Efficiency and Reliability in the Generation of Radiated Stress

Abstract : The ability of reverberation chambers to generate high-intensity field levels from relatively low-power input signals is reexamined for the case of time-reversed signals, proving that they lead to a higher efficiency. Moreover, the strong statistical spread typical of time-harmonic excitations can be dramatically reduced, thus improving the reliability of radiative tests, while limiting the need for a large number of independent realizations. The two excitation schemes are compared when forcing their respective input signals to display the same peak instantaneous power. Experimental results are provided, supporting the conclusions of our theoretical analysis.
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IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2016, 99 (00), 〈10.1109/TEMC.2015.2478420〉
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Henri Vallon, Andrea Cozza, Florian Monsef, Anne-Sophie Chauchat. Time-Reversed Excitation of Reveberation Chambers: Improving Efficiency and Reliability in the Generation of Radiated Stress. IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2016, 99 (00), 〈10.1109/TEMC.2015.2478420〉. 〈hal-01197059〉

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