CST mesh size for resonator

Hey,

I have a problem with CST.
I am simulating a coplanar resonator using CST software, see link:
http://obrazki.elektroda.pl/6857748900_1461403155.png

I want to increase the dielectric constant of the substrate from 100 to 10000.
So far I am not sure how I should mesh the structure, because whenever I change the mesh the results of my simulation change also, although all other parameters remain constant!
I know that when I change the dielectric constant of my substrate also the wavelength changes according to

/

, when the frequency f remains constant. I always calculate the wavelength using CST macro "calculate wavelength".
I heard once that the mesh size should be 1/10 of the wavelength. But I think that is sometimes really coarse, because when dealing with microwaves (I have frequencies between 1 and 10 GHz) the wavelength is quite large and therefore the mesh.

Does someone of you know what is the ideal mesh for my structure or how I can figure it out?

Best regards,

ychy123

set the mesh to a level you believe it should be, and then start the simulation with adaptive mesh refinement. simulation will refine your mesh until least changes detected with respect to previous simulation.

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