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. 4 Slot fractal patterns (a) Tree fractal; (b) Helical fractal; (c) Cross fractal; (d) Hilbert fractal with order two; (e) Hilbert fractal with order three; (f) H-shaped fractal with order one; (g) H-shaped fractal with order two; (h) Snow fractal. The arrows in the metal sheet represent the flow direction of the eddy currents