Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals*

Qing-feng LI,Shao-bo CHEN,Wei-ming WANG,Hong-wei HAO,Lu-ming LI

Fig. 9 Four experimental designs for evaluation of slots’key pat-tern features(a) No metal is presented between the transmitting coil and the receiving coil; (b) A PCB copper layer without slots is present between the coils; (c) A PCB copper layer slotted without breaking the edge is present between the coils; (d) A PCB copper layer with slots reaching the edge is present between the coils