We have QI coil and NFC coil-antenna that placed coaxially on top of each other. Does NT3H2111 chip compatible to operate with voltage levels in antenna stressed by fields that QI charger generate?
No, It is not possible for the tag (NT3H2111) to operate within the Wireless charger frequency, it is needed to design a pass-band filter which operates above the QI frequency up to the NFC cutoff frequency. So that the tag's IC doesn't get damaged.
I just put in series decoupling capacitor (something about 1nF) after NFC coil. All good)
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