Fig. 6: Experimental results of inversely designed structure.

a The measurement of S21 under low-power input (\({S}_{E}\)) compared with simulation. b The measurement results of the rise in temperature under high-power input (c) The infrared photo at 3.65 GHz. d The measurement of the EM response under high power irradiation in the waveguide. e The EM and thermal performance of a contrast sample under high power irradiation.