Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals
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Qing-feng LI,Shao-bo CHEN,Wei-ming WANG,Hong-wei HAO,Lu-ming LI
Table 2
Eddy current suppression in three metal layers
Scheme
P
E
(%)
P
T
(%)
η
(%)
P
T
/
P
TR
(%)
No copper
100.0
100.0
100.0
100.0
No slot
88.1
34.2
44.3
50.0
Etching one layer
99.9
46.0
53.7
56.3
Etching two layers
103.7
94.0
94.0
93.8