I am having trouble measuring the noise floor on the TRF3703-17. I have measured at several frequencies with similar results, the results I give here at 2GHz are typical. Whereas the data sheet indicates -163dBm/Hz, I am getting a broad peak at 5MHz offset from the carrier of -155dBm/Hz, the rest from 1MHz to 20MHz offset being around -157dBm/Hz.