Table 1.

Detailed structures of excitation and cancellation coils.

Coil	Outer/inner diameter [mm]	Wire ϕ [mm]	Length [mm]	Turns	R [Ω]	L [mH]
Excitation	15.4/11	0.3	28.8	800 (8 × 100)	10.9	2.7
Cancellation	10.2/8	0.18	19.8	588 (6 × 98)	11.9	1.1