Hi Robert,
See this DesignCon 2019 tutorial on DK/DF extraction:
http://ataitec.com/docs/DK_DF_extraction_tutorial_DesignCon_2019.pdf
Regards,
Ching-Chao Huang
www.ataitec.com
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of talented.libran@xxxxxxxxx
Sent: Saturday, March 2, 2019 7:20 AM
To: SI-LIST
Subject: [SI-LIST] PCB material extraction
Hello everyone,
I was trying to model a manufactured rev of a pcb especially at the 2.92mm
sma launch area. I took some cross-sections of our existing test card along
with x-ray scans to model accurately the via, antipad and stackup details.
I see good correlation until certain portion of the model (2.92mm connector
and 8mil drill via in TDR plot). In a 3d field solver I specify causal
frequency dependent djordjevic-sarkar model. But I cannot get a correlation
from the pcb portion (trace breakout) of the design.
Are there any steps or data which could be extracted from existing pcb to
get accurate numbers for dk and df values? Please share your comments. I
have access to 26.5 GHZ VNA, 18ps trise TDR, PLTS software in addition to
3D field solver. I'm trying to get frequency and time domain correlation
until 20GHZ where IL and RL cross.
Thanks
Robert
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