Fig. 6: Experiments of radio-frequency (RF) signal detections. | Nature Communications

Fig. 6: Experiments of radio-frequency (RF) signal detections.

From: Intelligent metasurface system for automatic tracking of moving targets and wireless communications based on computer vision

Fig. 6

a A TE-polarized beam from a feeding antenna is incident on the DPM. The position of the model car is fed into the control system, and all bias voltages are instantly calculated and supplied to DPM. The reflected waves are detected in real-time by the RF signal detector. b RF signal changes when the detector is fixed (Voltage-det. -fix) in the middle of the path or moves (Voltage-det. -move) with the car. c Outdoor experimental setup of the intelligent metasurface system. d The received RF signals under y-polarization (y-pol) and x-polarization (x-pol) when the detector moves with the car. The horizontal ordinate is the moving path of the car from the beginning to the end.

Back to article page