Switch Simulation in CST

I am working on frequency reconfigurable antennas and simulating design in cst. I am facing problems in simulation of pin diode like dimension of pin diode, width of connecting strips...etc.
Plz see this attachment and help me to simulate switch.

Hi,

pictures are quite small, did you placed a port between the lead pins of your diode? If yes, you can include a model in the cst schematic editor and simulate or structure.

Thank you johnjoe for your reply. But I coudn't get your point. Actually I am using BAP64-02 silicon PIN diode & its size is nearly 2mm. So I just left 2mm space between two ends of antenna and directly put lumped network element over it and assign it RLC values.
I want to know is it right way to do?
Attachment 105753

Could not get your attachment. Lumped network element is not correct, because your diode is nonlinear. Place your ports on both sides and add in the schematic window a model between both ports and run your simulation.

If you have any design simulating switch then plz send me. Because I don't have any idea of schematic window.

At the moment I don't have any templates, but have a look in the manual and search for microwave studio co-simulation.

Thank you for this suggestion, it nearly resolve my problem. One thing more, I want to use spice model of diode but I couldn't get that file which is imported in spice model block.

You have a spice model file for your diode?

In CST DS help I found that " commercial SPICE simulators such as HSPICE, PSPICE, LTSPICE, etc. are not supported.This type of block imports a circuit from a file in Berkeley SPICE syntax.

I don't know how to draw spice model in berkeley syntax and where to draw.

I attached you a site of howto WRITE spice models, you save it as text file and attach the file into the schematic.

http://www.seas.upenn.edu/~jan/spice....overview.html

For PIN diodes used as a switch, it would be reasonable to simply use R for the "closed" state and C for the "open" state, instead of a non-linear model.

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