A practical look at PCB skew issues and mitigation

#Skew #Fibre #weave #High #speed #data #channels
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The glass weave effect on 56Gbps PAM-4 systems have shown bit error rate issues in the Lab. Our lab results show that our PAM-4 systems are more sensitive for PN skew than previous generations of NRZ with the same UI. For the current generation of designs we must consider glass direction, glass type, weave density. The stackup decisions are based on the on the measured network parameters, TDR, silicon BER, and eye diagram measurement results. Techniques used to mitigate the unbalance effect of the glass weave with differential pairs are discussed here and statistical measurement results will be shared.


  Date and Time

  Location

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  Registration


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  • Schneider Electric
  • 1101 Shiloh Glenn Dr.
  • Morrisville, North Carolina
  • United States 27560
  • Room Number: Black Mountain Conference Room
  • Contact Event Host

  • Dr. Bruce Archambeault, bruce.arch@ieee.org

    Jay Diepenbrock, j.c.diepenbrock@ieee.org

  • Starts 20 January 2022 05:00 PM UTC
  • Ends 01 February 2022 10:00 PM UTC
  • No Admission Charge

  Speakers

Stephen Scearce

Biography:

Stephen Scearce (Cisco) , M, – Stephen Scearce is a Principal Engineer/Engineering Manager of Cisco’s Electronics Packaging and Diagnostics team.  Stephen provides the technical direction/leadership for Signal Integrity, Power Integrity, Mechanical/Thermal Design, and Software Diagnostics design in US/China.  He has global responsibility for Cisco’s Enterprise Routing, Wireless, Core Switching, and Security product lines. Stephen has worked for Cisco for 20 years focused on ASIC/System PI, SI, Package Design, and EMC design.  Prior to working at Cisco, Stephen worked for NASA LaRC in the Electromagnetic Research Branch HIRF team. Stephen holds 7 U.S. issued patents, and co-authored 16 papers.   He has served on IEEE EMC-SI/PI conference committee for 7 years, is the Operations Chair of for the Virtual IEEE EMC-2021 conference,  currently serving as an IEEE EMC-SI-PI Distinguished lecturer for the 2021-2022 term, and Finance Chair for the IEEE EMC-2022 conference. Stephen received his BSET and MSEE from Old Dominion University, Norfolk VA.

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Agenda

Light dinner in Front Loggia, 5:30-6 PM

Presentation and discussion 6:00-7:30 PM (approx.) in conference room