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Modeling Capacitive-Loaded Unintentional Stubs in High-Speed Channels

  • Nicolò Vicari*
  • , Rick Rabinovich
  • , Samuel Kocsis
  • , Kevin Mammenga
  • , Gang Zhang
  • , Carlo Olivieri
  • , Francesco de Paulis
  • *Corresponding author for this work
  • University of L'Aquila
  • Keysight Technologies
  • Dept. of Standards and Technology
  • Wilder Technologies

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The increasing channel bandwidth requirements needed for next generation high-speed serial interfaces extends where notch stubs appear, due to tiny channel discontinuities previously negligible. The impact of such hanging stubs is exacerbated by nearby reference planes due to the parasitic capacitance of the loaded stub. Based on the example of a mated connector at the spring to pad interface, the analytical calculation of the fringing capacitance and of the corresponding downshift of the stub resonance is proposed. Practical examples are presented to demonstrate the need for predicting such frequency downshift.

Original languageEnglish
Title of host publication2025 International Workshop on Advanced Interconnects, WAI 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331593452
DOIs
StatePublished - 2025
Event2025 International Workshop on Advanced Interconnects, WAI 2025 - Ningbo, China
Duration: 5 Nov 20257 Nov 2025

Publication series

Name2025 International Workshop on Advanced Interconnects, WAI 2025

Conference

Conference2025 International Workshop on Advanced Interconnects, WAI 2025
Country/TerritoryChina
CityNingbo
Period5/11/257/11/25

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