Grounded CPW
Grounded CPW
(OP)
I am trying to diagnoise a problem with a CPW board and I need to calculate the impedance and dielectric constant. If you know the via sizes, location, the material, (in this case Rogers 4003), and the dimensions; is there a simple way to determine these pieces of information?





RE: Grounded CPW
You could calculate the dielectric constant from a simple shape and the measured capacitance, but you do need a measurement to start the whole process.
Vias are a miserable addition to the equation and would normally only be soluble using a full finite element analysis.
RE: Grounded CPW
Also, I thought that the vias were to keep from generating higher order modes?
RE: Grounded CPW