Omnidirectional Wireless Charging of Battery-Free Drones in Octagonal Prism Chamber

This paper proposes wireless charging for a battery-free drone in an octagonal prism chamber. The coil design of the octagonal prism chamber maximizes spatial coverage, facilitating wireless charging for the drone at various heights. Experimental results demonstrate that the proposed wireless charging container can replace the drone's battery, ensuring the drone can fly for any duration and enhancing operational efficiency.