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Signal to Noise ratio degradation by receiver internal noise

Receive system internal noise adds to external or ambient noise, and so degrades the signal / noise ratio. This calculator takes the ambient noise figure or temperature and receive system noise figure or equivalent temperature and calculates the degradation in signal / noise ratio.

The results are valid only for linear circuits (ie effects of non-linearity such as intermodulation distortion are not included).

Inputs:
           
Results:
S/N degradation (dB)

The calculator does not do a lot of error checking, if you enter nonsense, it will probably produce nonsense.

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Changes

Version Date Description
1.01 21/09/2019 Initial.
1.02    
1.03    
1.04    
1.05    

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