Table 1 Measurement results of mutual inductance.

From: EMI characteristics analysis and suppression technique of magnetic near-field coupling in power delivery adapter

Item

Insertion loss K/dB

Mutual inductance M/pH

Primary power PCB loop

 − 78.856

825.3

Secondary power PCB loop

Background noise

Very small and can be neglected

Transformer component of the primary winding

 − 85.9

409.5