> What is NFC/IPT?

Sorry.

NFC - Near Field Communications.
IPT  - Inductive power Transfer

Aka Magnetic field as opposed to electric or electromagnetic.

Will "pass through" metallic non ferro/para/dia magnetic  layers of
suitably high resistance with relatively minimal loss.
A number of metals are suitably cooperative - Pt, Pa, Ta all run about
8 to 9 x 10E^ S/m which translates to about 6   the resistance of Cu
as a conductor or plane surface.
Titanium is about 3X better but may or may be unreactive enough. TBD.
Make it nice and thin as well (say 10's of micrometres ideally) and
you may be able to ignore it. May. Arguably skin effect may allow you
to use thicker without much difference at high enough fequency but
then other things come along.

Anyone played with this?


      R
--=20
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