I'm trying to determine the SNR required for signal outcoming from FMCW Radar. This is the chain: signal will created by "24 GHz VCO and PGA with 2-Channel PA Output" by triangle shape frequency domain, 8 dBm,250 max range.
Then received in this manner:
- 4ch 24GHz receiver downconverter ->
- RADAR receiver path AFE: 4CH LNA & PGA ->
- (Op-Amp) summer of 4ch together ->
- (Op-Amp) sallen-key filter ->
- Transmit to other board
Note: The AD817s Negative voltages is created by switching inverting regulator!
Seems I need to start through PA power then add max distance noise to it, then noise of receivers chain through their datasheet. Then some MATLAB simulation to determine least possible SNR required?