Question
For my application I need a noise level close to -100 dBm. Is there a possibility to archieve that?
Achieve noise level below -100 dBm for S21 measurements
Answer
Yes - with some restrictions. It works if the frequency is not higher than 1 GHz:
Meas: S21 (not S12!)
- Frequency Stop up to 1 GHz
- Ref: -75 dBm
- RBW: 300 Hz
- TG Pwr: 0 dBm
- Att: 0 dBm
Now do a "Full 2 Port High Accuracy Calibration". This is the result:
The noise level becomes better if the calibration is done with Receiver Att of 10 dB and afterwards changed to 0 dB. Please note that "cal ?" is shown then, because there was change of the measurement settings after calibration:
The noise level becomes better if the calibration is done with Receiver Att of 10 dB and afterwards changed to 0 dB. Please note that "cal ?" is shown then, because there was change of the measurement settings after calibration:
