If you’re a board engineer, are you encountering high-speed issues? What are they?
One that’s garnering some thinking and observer attention is signal integrity for high(er) speed board designs.
With most all designs running at 10 Gbps (more mainstream these days), and approaching 25 Gbps, current measurement and verification of S-parameters seems to be an increasing concern.
At DesignCon, SI authority Erig Bogatin and Industry observer Max Maxfield discussed different aspects of this problem with AtaiTec CEO Ching-Chao Huang.
Maxfield says that engineers face problems when creating S-parameters from simulation and/or real-world measurements. Accurate simulations require accurate data for material properties, while measurement requires accurate de-embedding. The current state-of-play is that signal integrity (SI) engineers cannot easily correlate simulation and measurement results at 20 Gbps and above.
How accurate is your S-parameter process?