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How to use a behavior model of RF amplifier?

Question asked by karaisan on Mar 30, 2014
Latest reply on Apr 6, 2014 by karaisan

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I need to define a behavior model of amplifier in my system-level design.
I choose Amplifier2 in "System - Amps & Mixers, and System" because i need to specify nonlinear characteristic of it.
But it seems I cannot specify Selectivity of the Amplifier2 such as Bandwith and so on.
So if want a fully defined behavior model of amplifier, what could I do?

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karaisan Mar 30, 2014 7:48 PM
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and what does this mean?

ImpMaxFreq = maximum frequency to which device is evaluated
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aehoward Mar 31, 2014 9:55 AM
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You could add one of the behavioral models of a filter before or after the amplifier.
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aehoward Mar 31, 2014 10:00 AM
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Regarding ImpMaxFreq, I recommend reading this document on our Knowledge Center (you will need a login): http://edocs.soco.agilent.com/display/eesofkcads/How+convolution+computes+an+impulse+response+in+harmonic+balance+transient+or+envelope+simulations
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karaisan Apr 1, 2014 9:09 PM
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thank you.
but I solved this problem by using DAC component.
I write a mdf file to specify s21 characteristic.
now I ask another question, in the behavior model of PhaseShifterSML,
there is only a few parameters, if I want to specify its s21, NF, linearity, what can I do?
Maybe I can use a cascaded amplifier before or after it,
but I don't want to make schematic complicated.
Is there any other solution?
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aehoward Apr 2, 2014 8:40 AM
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To avoid making the schematic look complicated, you could create your own model of a phase shifter and put it inside a subcircuit.
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- karaisan @ aehoward on Apr 6, 2014 9:33 AM
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  thank you.
  can you please show me a link to the turioral of how to create own model?
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How to use a behavior model of RF amplifier?

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