“Differential Signaling – Tradeoffs for Optimization of Signal and Routing Quality”

Presenter: Robert Hanson

September 18, 2019  5:45pm to 8:45pm



During this seminar, attendees will learn about the attributes of loosely/tightly coupled differential pairs; definitions and examples of differential and common mode voltage, current and differential impedance – both odd and even modes. The advantages and disadvantages of edge (side-by-side), broadside (dual), asymmetric and microstrip differentials will be discussed. Pertinent topics regarding reflections and crosstalk in differentials will be included. Metastability, clock skew, driver skew, bit pattern sensitivity, ISI, skin effect, dielectric constant, jitter, BER, and the eye diagram are part of the session. Other topics that will be discussed include matching electrical lengths, differential unbalance, controlling Zo, differential/common mode radiation, transversing connectors, and other signal quality issues and design guides.

You will learn:

• All voltage, impedance, and current definitions for differential signaling.
• Comparison of Edge, Broadside, Asymmetric, and Microstrip differential layouts and effectiveness in controlling crosstalk and radiated emissions.
• How to overcome differential unbalance.
• How to control Zo when switching from loosely coupled to tightly coupled (and vice versa) differential layouts.
• The major drawback when using broadside differentials.
• Why differential signaling is essential for long haul, high-speed transmission lines.
This will be a free evening event and dinner will be served although donations would be greatly appreciated.  Please register below so we can get a head count.


Speaker Biography:


Robert Hanson, Electrical Engineer

Robert Hanson has more than 40 years’ experience in design, manufacturing and testing. He has bachelor’s degrees in industrial engineering and business administration, and a master’s in electrical engineering. Hanson has been a digital design engineer at Boeing, Rockwell, Honeywell and Loral.



Event Sponsor:




Eventbrite - IPC Designers Council - Cascade Chapter Meeting



Lake Washington Institute of Technology – Kirkland Campus
Room A102
11605 132nd Ave NE
Kirkland, WA 98034 

Park in the south lot off of 132nd Ave NE. Room A102 is located in the south-east corner of the building, on the 1st floor.

Campus Map