i'm working with the ADRV9009-ZU11EG, i tried to generate a SinWave signal with a -35dBm power with a signal generator. I tried to measure this SinWave at 2.4GHz and 5.8GHz by means of power density spectrum computation. At 2.4GHz i found the signal magnitude which is correct regarding the generated signal. But at 5.8GHz i measure a signal level much lower than what expected (about 10dB lower). I would like to know why? and is there any solution to this issue?
Find bellow the measure power with the ADR9009 with 8 channels.
An example of time domain and frequency domaine signal mesured at 2.4GHz.
An example of time domain and frequency domaine signal mesured at 5.8GHz.