Comparison of the effectiveness of cross-coupling reduction methods in PCB transmission lines

DOI: 10.21293/1818-0442-2025-28-2-22-28

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Abstract: The paper presents the results of evaluation of the efficiency of methods for reduction of cross-couplings in transmission lines. For this purpose, using the example of a pair of coupled lines, the coupling coefficients (capacitive, inductive and electromag-netic) and the cross-talk level in a passive conductor are esti-mated with an increase in the distance between them, applica-tion of a dielectric coating and imposing of a grounded conduc-tor between the line signal conductors. It is established that for long-distance transmission lines, application of a dielectric coat-ing is the efficient method, but if the length of the line is short, efficiency shifts towards imposing of a grounded conductor into the line. Additionally, the calculated frequency dependences of the S-parameters of the line confirmed this conclusion.

Keywords: signal integrity, coupling coefficients, cross-talk, pair of coupled lines, protective varnish, grounded conductor

Funding: This work was supported by the grant from the Russian Science Foundation, No. 24-79-00159, https://rscf.ru/project/24-79-00159/ at TUSUR.

For citation:
Skornyakov I. A., Karri S., Surovtsev R. S., Mandel A. E. Comparison of the effectiveness of cross-coupling reduction methods in PCB transmission lines. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2025, vol. 28, no. 2, pp. 22–28. DOI: 10.21293/1818-0442-2025-28-2-22-28

Authors and copyright holders:

  • Skornyakov I. A. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
  • Karri S. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
  • Surovtsev R. S. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
  • Mandel A. E. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)

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