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Electrical Thickness

Question asked by m01tab4 on Dec 16, 2013
Latest reply on Dec 18, 2013 by rjrodrig
In simulating the substrate of my design, I get the following warning :

Layer found with a large electrical thickness at the highest simulation frequency!
Layer thickness = 10 mm, dielectric constant = 81

Consequence  : - substrate database generation may not converge.

Consider     : - lowering the thickness of the layer ;
               - lowering the dielectric constant of the layer
               - lowering the maximum freqency.

Why this problem happened? The lower dielectric leads to higher wave length or electrical thickness i guess. Why it suggest to reduce the dielectric constant? can any one please explian me the scientific reason of this warning?

Edited by: m01tab4 on Dec 16, 2013 1:09 PM  

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