**Part Number:** TRF371109

I want to calculate the gain of the I/Q demodulator. I believe the gain is defined as voltage gain from mixer RF input to baseband I or Q output.

For the RF input voltage, I calculated the Vrms using Power in watts = Vrms^2/50 .. for 50Ohm input impedance. The power in watts will be the power at the EVM connector (I am neglecting loss of the PCB trace and the balun). For the baseband output voltage (I or Q), I take the peak voltage and divide by sqrt(2) to get Vrms.... but when I do this, I get gain in the order of 37dB... far short of the typical gain of 52dB. I am using maximum BB gain of 24dB. My RF is 926MHz and my LO is 925MHz, and the baseband filter is set wide open (~15MHz).

What am I missing?

Please provide the exact formula for gain calculation. Thanks.