Fig. 4: Experimental validation of 2-bit space-time-coding metasurface (STCM) prototype and measured far-field patterns for the full-aperture scheme.
From: Integrated sensing and communication based on space-time-coding metasurfaces

a Measurement setup in an anechoic chamber. b Fabricated prototype of a 2-bit reflection-type STCM. c, Measured far-field scattering patterns of the fundamental-frequency wave for different STC matrices as detailed in Supplementary Fig. 4a. d–f, Measured far-field scattering patterns corresponding to three STC matrices for different parameters of the duty cycle and time shift, as detailed in Supplementary Fig. 4d–f.