Hi,
the textbook values are for pure copper, and most simulation software uses
textbook values by default, or measured copper foil. The PCB copper isn't pure,
especially the electroplated outer layers, so it has higher resistance than
pure copper. Best practice is to measure the resistance (can vary between
laminate and PCB manufacturers) and use this value for future simulations.
BR
Gert
----------------------------------------
HARTING Stiftung & Co. KG | Postfach 11 33, 32325 Espelkamp | www.HARTING.com
Persönlich haftende Gesellschafterin:
HARTING Führungsstiftung | Amtsgericht München | HRA 108479 | München
Vorstand: Dipl.-Kfm. Philip F. W. Harting (Vorsitzender), Dipl.-Kffr. Maresa W.
M. Harting-Hertz, Dipl.-Kfm. Dr.-Ing. E. h. Dietmar Harting,
Dipl.-Hdl. Margrit Harting, Dr.-Ing. Kurt D. Bettenhausen, Dipl.-Ing. (FH)
Dipl.-Wirtsch.-Ing. (FH) Andreas Conrad, Dr. iur. Michael Pütz
Sitz der Gesellschaft: Espelkamp | Amtsgericht Bad Oeynhausen | HRA 9021 |
UST-ld Nr. DE812136745
-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx <si-list-bounce@xxxxxxxxxxxxx> Im Auftrag von
??
Gesendet: Donnerstag, 30. Juni 2022 10:30
An: si-list@xxxxxxxxxxxxx
Cc: tommy.huang@xxxxxxxxxx
Betreff: [EXTERNAL] [SI-LIST] conductor resistivity for SI simulation
Hi Expert,
We saw default resistivity value of copper in different simulation tool from
0.0172 to 0.0185. We measured resistivity of PCB trace is about 0.021 by
resistance and cross-section. This 20% difference resistivity introduce about
8% loss difference below 10GHz, about 5% difference higher than 10GHz from my
simulation tool.
Is there any recognized value for insertion loss simulation or recommendation
method to characterize correct resistivity of PCB trace?
Any advise is appreciated
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
