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Altera_Forum
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11 years ago

How to check Gain with ModelSim-ASE (FIR Compiler)

Hello everybody, I try to FIR Compiler simulation. I want to know how to calculate Gain from simulation result. I think that " Gain = 10 log (Vin / Vout)^2 ", but Fir Compiler's input da...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Regarding 0dB gain (unity) it is defined for a given reference frequency point e.g. dc for LPF.

It also affects signal mean power and final power depends how much power you chop off.

for dc unity gain set sum of coeffs to 1 (or sum of every single polyphase to 1 if upsampling)