Measurement-Based Modeling and Worst-Case Estimation of Crosstalk Inside an Aircraft Cable Connector

Guanghua Li, Gary Hess, Robert Hoeckele, Steve Davidson, Peter Jalbert, Victor V. Khilkevich, Thomas P. Van Doren, David Pommerenke, Daryl G. Beetner

Research output: Contribution to journalArticlepeer-review


Crosstalk within cable bundles can degrade system performance. In aircraft systems that use shielded twisted pairs, the crosstalk occurs primarily in the connector where individual signal wires are not shielded or twisted. In many cases, the parameters which determine crosstalk within the connector are unknown because the connector is closed and wires cannot be easily accessed. Expanding on prior research [14], a methodology for measuring coupling parameters and modeling crosstalk within aircraft cable connectors at low frequencies (<400 MHz) was developed. The values of mutual inductance and capacitance were extracted from measurements made with a vector network analyzer (VNA). The characteristics of the individual wires were extracted from VNA-measured TDR response. The accuracy of the model was evaluated through comparison of simulated and measured results. Additionally, a closed-form solution was developed to estimate the worst-case envelope of the differential crosstalk. The calculated results match the measured peak values well. This worst-case crosstalk estimate allows effective evaluation of the impact of crosstalk within different connectors. The developed method can be effective for analyzing complex aircraft cable assemblies and connectors without requiring extensive knowledge of the assembly procedure.

Original languageEnglish
Article number6985640
Pages (from-to)827-835
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number4
Publication statusPublished - 1 Aug 2015
Externally publishedYes


  • Cable bundle
  • capacitive coupling
  • crosstalk
  • inductive coupling
  • modeling
  • worst-case crosstalk

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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