Fig. 6: Frequency generation with part of the metasurface columns. | Nature Communications

Fig. 6: Frequency generation with part of the metasurface columns.

From: Manipulations of multi-frequency waves and signals via multi-partition asynchronous space-time-coding digital metasurface

Fig. 6

a Generation of dual frequencies (f1, f2) with two columns (red and black) in the metasurface, while the remaining white columns are unmodulated. b Baseband spectra for dual-frequency generation. The abbreviation “a. u.” is for “arbitrary units”. c, d Baseband spectra for eight-frequency generations (f1~f8), where the left and right eight columns in the metasurface are responsible for synthesizing the four frequencies, respectively.

Back to article page