100nF? Are you sure? That sounds excessive.

Could you give us some fabrication details? Also, how exactly did you
measure this capacitance?


m

On 12/22/10, Christian Engel  wrote:
> Hello everybody,
>
> I have build a square inductor with a size of about 1cm² with N=10.
> Substrate is LCP with a structured Au-layer thereupon. This layer was
> reinforced galvanically. The subsequent ohmic resistance of the inductance
> is about 8...10Ohm. A very bad value I think and it shows, that the
> metallization process doesn't work properly. However, the measured
> inductivity complies with the expected value. The problem is, that I obtain
> a very high parasitic capacitance (some 100 nF) that can be measured between
> the two electrodes of the inductor. So it is impossible to use it any
> further.
>
> Is it conceivable that the ohmic resistance generates potential-differences
> between the windings of the inductor and a lot of parallel capacitances are
> formed? Does anybody know an analytical description for this effect?
>
> Thanks a lot,
>
> Chris
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