[ List Subjects ][ Post Message ]
Subject: Simple formulas for first approximation of dual stripline differential impedance-do they exist?
[ View Followups ][ Post Followup ]
Date: 09/27/03 at 4:25 PM
Posted by: John W. Childers
I am grappling with differentical impedance. I have formulas for stripline and microstrip differential impedance from National. But I have been unable to find any formulas specifically for dual or asymetric stripline differential impedance.
The board houses we use have advanced modeling software for achieving the impedance requirements. I am just trying to get a first approximation for PCB trace geometry.
Does any of you know of any reference that contains formulas for dual or asymetric stripline differential impedance?
Post a Follow-up: