[CST] How to simulate an ISS (impedance standard substrate)

[Vsl]

[CST] How to simulate an ISS ( impedance standard substrate )

Dear all,

I'm tryng to simulate a CST structure like the one you can see in the picture. The structure represent the Open standard realized with alumina on a silicon substrate.
The three pads represents the landing pads of a typical ground-signal-ground probe.
The problem is how to simulate them. Do you suggest to use a waveguide port ( as shown in the second picture ) or three lumped port, one on each pad?

Thank you in advance,
V.M.

 

[twisted_pear]

Re: [CST] How to simulate an ISS ( impedance standard substrate )

Vsl,

Per the CST manual, if there are 3 or more conductors in proximity it is recommended that you use a multipin waveguide port. I would recommend reading this section of the manual, it isn't that dense. It is easy to find by clicking on "help" while you are in the waveguide port creation menu.