Fig. 3: Experimental measurement scheme to obtain the classification performance of the THz-SPNN. | Nature Communications

Fig. 3: Experimental measurement scheme to obtain the classification performance of the THz-SPNN.

From: Terahertz spoof plasmonic neural network for diffractive information recognition and processing

Fig. 3

a The schematic illustration of the measurement setup. The frequency extender module (FEM) can extend the working frequency of the vector network analyzer (VNA) to 220–325 GHz. Then, the transmission parameters of the THz SPNN can be obtained by using the ground-signal-ground (GSG) probes. b Partial sample display under the microscope. c Photograph of the experimental set-up. d GSG probe to excite the sample.

Back to article page