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. 2 Three etching schemes for the metal sheet (a) Four 0.3 mm deep slots begin at the disk center and end at a distance L from the center; (b) Three 0.3 mm deep slots begin at the disk center and end at a distance L from the center with a fourth slot ending at the disk boundary; (c) The slots all extend to the edge with varying slot depth h. All the slots have a fixed 0.3 mm width