How can I model a non-linear resistor whose current changes according to the equation shown below on Advanced Design System (ADS) or AWR Microwave Office? $$i(t)=v-v^2-v^3$$ Where v is voltage difference between terminals of the resistor. How can I create such a resistor?
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1In ADS look up "Symbolically Defined Device (SDD)" in the help files. – The Photon Dec 17 '20 at 23:21
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Aldrich—I am not really familiar with Advanced Design System or AWR Microwave Office, but your post is tagged with "spice", so that implies one or both of the packages supports SPICE netlists? And supports behavioral current sources? If so, you could try coding the non-linear resistor's behavior like this:
.subckt Rmicrowave pin1 pin2
Br pin1 pin2 I = V(pin1,pin2) - V(pin1,pin2)**2 - V(pin1,pin2)**3
.ends Rmicrowave
Daniel J. Greenhoe
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