Hello everybody!

I have the ENA 5071B. I need to characterize two low noise amplifiers (S21 parameter), sum their frequency responses, and save the result in Touchstone format. How could I do it? I would need some ideas...

Thank you in advance.

I have the ENA 5071B. I need to characterize two low noise amplifiers (S21 parameter), sum their frequency responses, and save the result in Touchstone format. How could I do it? I would need some ideas...

Thank you in advance.

If you have access to ADS or another simulation program, you could also sum the Touchstone files there. It is also possible to do this in Excel or another calculation tool and the math is discussed in AN1364-1 De-Embedding and Embedding S-Parameter Networks Using a Vector Network Analyzer.