[SOLVED] Modelling a varactor diode based on the datasheet info

[jadnounyah]

Please I have been able to set the parameter values for the varactor based on the data sheet provided in ads and created hierarchy. The issue now is with validating the performance of the varactor with a suitable simulation set to get a graph of the capacitance against the voltage. All ideas are welcome. Thank you

 

[BigBoss]

Varactor diodes can be considered as simple SPICE based diodes.
If you know SPICE parameters of a varactor ( for instance Skyworks publishes these parameters in their datasheets ) you can enter them into SPICE model block of a simple diode model block in ADS.
Then bias the diode reversely and check the Cap vs. Reverse Voltage.

 

[jadnounyah]

Yh

Varactor diodes can be considered as simple SPICE based diodes.
If you know SPICE parameters of a varactor ( for instance Skyworks publishes these parameters in their datasheets ) you can enter them into SPICE model block of a simple diode model block in ADS.
Then bias the diode reversely and check the Cap vs. Reverse Voltage.

I'm using a skyworks model and it's just as you said.
Now the setup for the validation in ADS is the issue for me since when I use a voltage source to bias, the data display generated doesn't give me options for plotting the cap vs reverse voltage graph. Thank you

 

[BigBoss]

Yh

I'm using a skyworks model and it's just as you said.
Now the setup for the validation in ADS is the issue for me since when I use a voltage source to bias, the data display generated doesn't give me options for plotting the cap vs reverse voltage graph. Thank you

Why ? If you arrange the set-up correctly, ADS will give you a correct analysis result.

 

[jadnounyah]

Why ? If you arrange the set-up correctly, ADS will give you a correct analysis result.View attachment 183526
View attachment 183527

Thanks for the set up format (my main issue), now I've been able to do the characterization successfully.