I download the BOM of ad-fmcomms3 board, the AC-Couple capacitor in the signal chain is TDK's C0603C0G1H180J;
I checked in TDK's website, found below specs of this capacitor:
We can see that the self-resonant frequency of this capacitor is about 2.2Ghz;
So I think the resonable working frequency range of this capacitor is less than 2.2Ghz;
My question is why choose such capacitor for ad-fmcomms3 board?