# Formulas for Crosstalk Calculation PCB traces

Hans Ziegler ([email protected])
Thu, 3 Jul 1997 19:41:34 +0000

Hello

I'm looking for formulas to calculate cross-talk for PCB traces.

Therefore I'm looking on formulas to calculate mutual inductance and
mutual capacitance for stripline and microstrip geometry.

offset stripline:

___ ========================================= power plane (e.g. GND)
| : Er :
| : | w2 | :
| : ____ __ :
| : ___ |____| __ t2 :
| : | :
| : | |-----s-----| :
b : | ____ __ :
| : | ___ |____| __ t1 : (Trace 1 and
| : h2 | : Trace 2
| : | | | w1 | : have same
| : | h1 : direction)
| : | | :
_|_ : _|_ _|_ :
========================================= power plane (e.g. GND)

embedded microstrip:

| w2 |
____ __ Er=1
___ ....___..|____|.__.t2...................
| : | Er :
| : | |-----s-----| :
| : | ____ __ :
| : | ___ |____| __ t1 :
b : h2 | : (Trace 1
| : | | | w1 | : and Trace 2
| : | h1 : have same
| : | | : direction)
_|_ : _|_ _|_ :
========================================= power plane (e.g. GND)

Anyone out there to point me to the right literature or solution?

Thank you very much,

Hans.

======================================================================
== Hans Ziegler, Toucan Technology, Galway Technology Centre,
== Mervue Ind. Est., Galway, Ireland.
== Phone: +00 353 91 757223
== FAX: +00 353 91 755635
== Email: [email protected]
== WEB: http://www.toucan.ie
======================================================================