The above coil property mainly occurs when the flow of current changes which is the AC but not for the steady current or DC. Self-inductance resists the flow of current always, so it is a kind of electromagnetic induction and the SI unit of self-inductance is Henry. Self Inductance Theory...
Then we sort these influencing factors so that these results can help designers to design the 3D PCB coil. The conclusions are as follows: (1) number of layers, total number of turns have positive correlation with the self-inductance; metal width, substrate thickness, the pitch between ...