Does any expert know how the results of the cascaded SNR and OIP3 in the RF Budget Analyzer are calculated？

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志刚
志刚 on 18 Apr 2025
As show in the figure,why doesn't the SNR of each stage change? And the result of OIP3 is also incorrect.
The formulas I refer to for calculating the cascaded SNR and OIP3 are as follows.
Therefore, taking Stage 2 as an example, the output results of SNR and OIP3 should be：

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