Hi Scott,
To be clear, you're suggesting to reduce the DK by 12% in the z-axis?
Thanks!
Jason
On Fri, Dec 13, 2019, 1:32 PM Scott McMorrow <Scott@xxxxxxxxxxxxx> wrote:
Yes. IF the pcb plane is x/y then the anisotropic behavior of Dk is about
12% higher. This can be modeled in HFSS with tensor dielectrics.
Scott McMorrow, CTO Signal Integrity Group
Samtec
Office 401-284-1827 | +1-800-726-8329
www.samtec.com
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-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx <si-list-bounce@xxxxxxxxxxxxx> On
Behalf Of Jason Ellison
Sent: Friday, December 13, 2019 1:19 PM
To: si-list <si-list@xxxxxxxxxxxxx>
Subject: [EXTERNAL][SI-LIST] PCB Isotropy
Hello SI Community!
Does anyone know of a PCB laminate permittivity isotropy study?
Specifically, I'd like to know if the permittivity is different when the
signal is propagating through the board vias (Z-direction) vs along traces
within the board (X-Y direction).
Cheers,
Jason
Employed by and affiliated with Amphenol AICC (
https://www.amphenol-icc.com/
)
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