How to define the port in Ads software??

[Shokooh kooshki]

Hello, good time
How should the port definition be in ADS software for Varactor?
I have considered the varactor circuit as the attached image. I now want to make sure which port definition provides a more realistic response.

 

[aliarifat794]

For a more realistic simulation, use an accurate varactor diode model with specified capacitance vs. voltage characteristics from the manufacturer's datasheet.

 

[Shokooh kooshki]

The actual model is used, but how should the port be defined to connect the varactor to the microstrip BPF?

 

[volker@muehlhaus]

Your question is not clear. Do you mean an EM circuit co-simulation, and definition of the diode ports in Momentum?

 

[Shokooh kooshki]

Your question is not clear. Do you mean an EM circuit co-simulation, and definition of the diode ports in Momentum?

Yes, that's exactly what I mean.

 

[volker@muehlhaus]

I would group the two pins at the diode pads into one EM port. This has no connection to global ground, so the ground metal must be connected to some other ports in your EM Model which use global ground (not floating).

 

[Shokooh kooshki]

I would group the two pins at the diode pads into one EM port. This has no connection to global ground, so the ground metal must be connected to some other ports in your EM Model which use global ground (not floating)

Is this port definition correct?

 

[volker@muehlhaus]

Is this port definition correct?

Yes, this will work.