CST Microwave Studio - how to simulate characteristic impedance

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bisonriver

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Hi,
I’m using CST2009 Microwave Studio to simulate transmission line characteristic impedance. The scenario is to have a pair of copper wires that are about 1 inch above the earth ground plate. Additionally, I’d like to see the characteristic impedance of a shielded twist pair (STP) with the shield connected to earth ground. Currently I’m using the “Waveguide Ports” on simple 2 wires without problem. How do I add an earth-grounded shield? That is, I can draw a metallic shield, but how do I specify it to be earth grounded?

Thanks for answering my question.
B. Riverton
 

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