Fig. 4: Performance of the conformal surfaces inverse design with increasing complexity.
From: Real-data-driven real-time reconfigurable microwave reflective surface
a, b Flat and curved surface, under normal incidence, at constant frequency 4.7 GHz. c Curved surface, under varying incident angle and frequency and d with scattering object presented. e–h The root mean squre error (RMSE) distribution on designs in the test set. i–l Visual examples of pattern design with 1 to 5 design targets, with typical error value in its category, excerpted from Fig. S13–S16 where more random-selected visual examples and error distribution in different categories are given. Red arrows in case C and case D indicate the incident direction.
