Fig. 1: Concept of the use of frequency-hopping metasurfaces to obtain additional degrees of freedom to engineer wave propagation. | Nature Communications

Fig. 1: Concept of the use of frequency-hopping metasurfaces to obtain additional degrees of freedom to engineer wave propagation.

From: Frequency-hopping wave engineering with metasurfaces

Fig. 1

(a) Conventionally available frequency channels. The frequencies used are limited to the frequency resolution realized. (b) Frequency channels extended by the proposed concept, specifically by frequency-hopping wave engineering. Even with the same frequency resources, signals are preferentially distinguished if their frequency sequences are different.

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