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Substarte parameters for ADS linecalc (Read 2348 times)

mixed_signal Senior Member Offline Posts: 183	Substarte parameters for ADS linecalc Nov 19^th, 2013, 2:26pm Hi, I want to use ADS linecalc for designing a coplanar wave guide on a PCB but the vendor website tells only this : 2-Layers, FR-4, 0.062", 1 oz. cu. plate Where do i get substrate parameters? If I plug in values for FR4 from wikipedia , will it work. Doesn't they vary from manufacturer to manufacturer?
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aaron_do

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Re: Substarte parameters for ADS linecalc
Reply #1 - Nov 19^th, 2013, 5:13pm

Hi,

if memory serves, you just need to know the loss tangent and the dielectric constant. You can google it or yeah use the values from wikipedia, but as I remember, the loss tangent of FR4 can vary widely. Also, it has been a while since I did this, but I believe ADS momentum will give you a more accurate result.

regards,
Aaron

there is no energy in matter other than that received from the environment - Nikola Tesla

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