Controlled impedance (stripline etc.) boards

[Spehro Pefhany]

Hi,

Does anyone have references for crosstalk and impedance of stripline
and microstrip designs that have analog signal traces relatively close
to ground strips (on the same layer as the signal traces)?

The spacing I get for the desired max level of crosstalk without this
is uncomfortably large.

Thanks in advance.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

Look for an article by Dr. Eric Bogatin in latest Printed Circuit
Design. Don't know if it's on the web yet or not.
Paul Mathews

Spehro Pefhany wrote:

Hi,

Does anyone have references for crosstalk and impedance of stripline
and microstrip designs that have analog signal traces relatively
close
to ground strips (on the same layer as the signal traces)?

The spacing I get for the desired max level of crosstalk without this
is uncomfortably large.

Thanks in advance.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the
reward"
speff@interlog.com Info for manufacturers:
http://www.trexon.com
Embedded software/hardware/analog Info for designers:
http://www.speff.com

 

[Joerg]

Hi Spehro,

The descendants of the Vikings have done research on this:

http://www.sp.se/electronics/RnD/reports/EMC/lccalc.pdf

After passing through the math heavy start it gets to be more down to
earth later and includes some Spice files, too.

Regards, Joerg

http://www.analogconsultants.com