Presentation Information
[B-1C-08]CARTHER: Catch and Release the Radio
〇Kentaro Murata1, Shunto Arai1, Keisei Omi1, Motoki Narusawa1, Naoki Honma1 (1. Iwate Univ.)
Keywords:
Radar,Gesture,Beamforming,MIMO,FMCW,Doppler,ISAC
With the proliferation of IoT and wearable devices, charging and power management have become major burdens that degrade user convenience. Over-the-air wireless power transfer has attracted attention, but challenges remain in detecting inactive devices and ensuring safe power delivery near the human body. Although metasurfaces can focus electromagnetic waves toward receivers, their lack of transceiver capability limits real-time control.
Methods using gaze, cameras, and electromyography (EMG) can reflect human intention in wave control, but require external or wearable sensors. ISAC and millimeter-wave radar enable gesture recognition using radio waves, yet their direct use for beamforming (BF) control has not been explored.
We propose CARTHER: Catch and Release the Radio. A closing hand corresponds to capturing radio waves, and an opening hand to releasing them. Using micro-Doppler responses from hand motion, beam focusing is controlled. Experimental results demonstrate motion detection and beam focusing.
Methods using gaze, cameras, and electromyography (EMG) can reflect human intention in wave control, but require external or wearable sensors. ISAC and millimeter-wave radar enable gesture recognition using radio waves, yet their direct use for beamforming (BF) control has not been explored.
We propose CARTHER: Catch and Release the Radio. A closing hand corresponds to capturing radio waves, and an opening hand to releasing them. Using micro-Doppler responses from hand motion, beam focusing is controlled. Experimental results demonstrate motion detection and beam focusing.