PROBLEM TO BE SOLVED: To provide an electric wave power recovery device, an electric wave power recovery method, and an electric wave power recovery system capable of selectively converting signal based on an electric wave into power for effective use of a radio wave resource.SOLUTION: An electric wave power recovery device includes: a switching part which switches whether signal based on an electric wave is to be processed or to be transformed to power when the signal based on the electric wave is transmitted; and a transducer which converts the signal based on an electric wave into power when the signal based on an electric wave is transmitted from the switching part.
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