sophiante
Junior Member level 3
I am attempting to achieve IM spec. of 85dB after TIA-603. That is: 12dB SINAD +3dB reduced to 12dB again. Frequency is VHF band.
The two interferring signals must be 50KHz and 100KHz from center, but this close to the wanted signal makes the result of the measurement more like generator sideband noise than DUT receiver IM. At least I suspect that generator noise is why I hit a limit however good my receiver is (I think)
My generators are Rohde & Schwartz SML01 - not the very best noisewise.
Does anyone have similar experience?
The two interferring signals must be 50KHz and 100KHz from center, but this close to the wanted signal makes the result of the measurement more like generator sideband noise than DUT receiver IM. At least I suspect that generator noise is why I hit a limit however good my receiver is (I think)
My generators are Rohde & Schwartz SML01 - not the very best noisewise.
Does anyone have similar experience?