Hello all,

I have a problem with thermocouples (type T) functioning as antenna when a mobile phone is in the near.
The TCs are followed by instrumentation amps and low pass filters, which decrease the disturbances. But they are still there.

What can I do in the first stage of signal chain to reduce the antenna effect?
Some ferrite beads for the thermcouple wires or something?

Btw:
A few weeks ago I launched a thread regarding disturbances from relay switching. A spark in the near of my project led to resets of the Cygnal µC.
The solution of this problem was a 100nF capacitor added to the reset line (the reset was, of course, driven by a reset controller).

Regards,
Carsten