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How to model a varactor in ADS

Question asked by kimx0945 on Jan 7, 2008
Latest reply on Jan 9, 2008 by wrivas

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I'm trying to model a varactor in ADS2006Update3.
I have parameters values of SPICE models of the varactor, but I don't know how to model it in ADS.
I tried to model the diode using regular DIODE MODEL in ADS, but I couldn't find to any way to apply reverse bias to the diode.
Is there any boy who can explain how to model a varactor in ADS?

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DIALOG-ADS Jan 8, 2008 3:19 AM
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I warmly suggest to get the I/V characteristics of the varactor and use a SDD component for the job. It is possible to create a subnetwork with the SDD component to get (or draw) a good symbol for the varactor.
A second choice is to use the netlist include feature.
Check on documentation and by Technical Support
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wrivas Jan 9, 2008 7:05 AM
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In ADS you place the model parameters in a model card (e.g. Diode_Model)and then you assign the model name to a diode device (e.g. Diode). You need both of these to have a complete varactor diode. You then use the Diode in your circuit. This will allow you to reuse the Diode_model if you need more instances of the varctor.
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How to model a varactor in ADS

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