How to find the constant effective dielectric?

For a microstrip line, there is a constant effective dielectric used when simulating these lines.  How can I see what is the constant effective dielectric?

Hello

There is also another way that I can think of and who uses the measure Er_Port for EMSight of the structures. You can simply implement your structure (line) in EMSight and then use the Er_Port measure to see what is your effective dielectric.  Here is more information on the measurement of Er_Port ( Er_Port measure). This approach removes the calculations and it is easy to set up. I joined a project showing how to do this. Please take a look

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