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variable NF of Amplifier

Question asked by guenther on Aug 25, 2006
Latest reply on Aug 29, 2006 by wrivas

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Hello,

i want to implement a variable NF of the Amplifier modell which changes with the instantaneous input power. I am doing a Circuit Envelope Simualtion and tried to read out the instantaneous input power with a IProbe- and a SDD-Component. Unfortunately i only get a single value for the power but i would expect a matrix containing power and time values.

Can someone help me?

Thanks!

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wrivas Aug 29, 2006 2:16 AM
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I am not sure how you are trying to make the Noise Figure a function of power. However if you are using the built in Amplifier2 behavioral model there really is no way to do this that I can immediately think of. If you are creating your own amplifer model with an SDD then I think we can make it work by assigning an input referred noise current density and in this formula you make the NF a function of the input power (e.g. NF=f(_v1,_i1)). Hope this helps.
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