Shielding Effectiveness of HSD Connector – Simulation and Measurement

Authors

  • Nikola Jurgec Koncar D&ST, Zagreb, 10000, Croatia
  • Ivan Vukosav Yazaki Europe Ltd., Zagreb 10000, Croatia
  • Darko Marinac Yazaki Europe Ltd., Zagreb 10000, Croatia
  • Bojan Trkulja Faculty of Electrical Engineering and Computing University of Zagreb, Zagreb, 10000, Croatia

Keywords:

electromagnetic compatibility, shielding effectiveness, transfer impedance

Abstract

The goal of designing a shielded High-Speed Data (HSD) connectors is to find the ideal balance between economy and performance. The connectors are a part of many systems and they influence their performance. The connectors should be designed to avoid possible negative effects on system properties. Thus, it is necessary to analyze the shielding effectiveness of connectors to ensure the electromagnetic compatibility (EMC) of the whole system. The transfer impedance is an effective shield parameter used to evaluate the shielding effectiveness of cables and connectors. Based on the analysis of the limitation of available test methods, a 3D model is developed to numerically calculate the transfer impedance of the HSD connector. Even though numerical methods were used, the theoretical foundations necessary to interpret the obtained results are revisited. The theory associated with cable shielding is revisited through solving known equations for the transfer impedance of a coaxial cable with a braided shield and foil.

Downloads

Download data is not yet available.

References

S. A. Schelkunoff, “The electromagnetic theory of coaxial transmission lines and cylindrical shields,” Bell System Technical Journal, vol. 13, pp. 532- 579, 1934.

E. F. Vance, Coupling to Shielded Cables. John Wiley & Sons, p. 183, 1978.

Morrison R. Grounding and Shielding Techniques in Instrumentation. John Wiley & Sons, p. 172, 1986.

E. F. Vance, “Shielding effectiveness of braidedwire shields,” in IEEE Transactions on Electromagnetic Compatibility, vol. EMC-17, no. 2, pp. 71-77, May 1975.

C. Chrisopoulus, J. F. Dawson, M. D. Ganley, A. C. Marvin, S. J. Porter, M. P. Robinson, T. M. Benson, and D. W. P. Thomas, “Analytical formulation for the shielding effectiveness of enclosures with apertures,” IEEE Transactions on Electromagnetic Compatibility, Aug. 1998.

H. Kaden, Wirbelsrrome und Schirmung in der Nachrichtentechnik, pp. 21-24, 1959.

T. Kley, “Optimized single-braided cable shields,” in IEEE Transactions on Electromagnetic Compatibility, vol. 35, no. 1, pp. 1-9, Feb. 1993.

M. Tyni, “The transfer impedance of coaxial cables with braided outer conductor,” in Wroclow EMC Symp., pp. 410-419, 1976.

N. Mora, F. Rachidi, P. Pelissou, and A. Junge, “An improved formula for the transfer impedance of two-layer braided cable shields,” in IEEE Transactions on Electromagnetic Compatibility, vol. 57, no. 3, pp. 607-610, June 2015.

J. H. G. J. L. Rotgerink, H. Schippers, and J. Verpoorte, “Multi-conductor transmission line modelling of transfer impedance measurement methods,” 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE, Angers, pp. 1-7, 2017.

A. Tsaliovich, Cable Shielding for Electromagnetic Compatibility, Springer US, 1995.

H. Ott, Electromagnetic Compatibility Engineering, Wiley, 2009.

R. W. Latham, “Small Holes in Cable Shields,” Interaction Notes, Note 118, AFWL Kirtland AFB, NM, Sept. 1972.

P. Madle, “Contact resistance and porpoising effects in braid shielded cables,” Proceedings of the 1980 IEE International Symposium on Electromagnetic Compatibility, Baltimore, MD, pp. 206-210, 1980.

S. Cellozzi and M. Feliziani, “FEM Analysis of the plane-wave electromagnetic field coupling to a multiconductor line,” Proceedings of the 9th International Symposium and Technical Exhibition on Electromagnetic Compatibility, Zurich, Switzerland, pp. 127-132, 1991.

M. Sadiku, Numerical Techniques in Electromagnetics, Boca Raton, FL: CRC Press, 1992.

ANSYS HFSS software user’s guide, 2017.

S. F. A. Mushtaq, “Transfer impedance simulation and measurement methods to analyze shielding behavior of HV cables used in electric- vehicles and hybrid-electric-vehicles,” Advances in Radio Science, pp. 139-145, 2016.

L. O. Hoeft, J. L. Knighten, and M. Ahmad, “Measured surface transfer impedance of multi-pin micro-D subminiature and LFH/sup TM/ connector assemblies at frequencies up to 1 GHz,” 1999 IEEE International Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No. 99CH36261), Seattle, WA, USApp, vol. 2, pp. 577-582, 1999.

IEEE Standard P1597, Standard for Validation of Computational Electromagnetics Computer Modeling and Simulation – Part 1, Feb. 2008.

A. P. Duffy, A. J. M. Martin, A. Orlandi, G. Antonini, T. M. Benson, and M. S. Woolfson, “Feature selective validation (FSV) for validation of computational electromagnetics (CEM). Part I – The FSV method,” IEEE Trans. on Electromagn. Compatibility, vol. 48, no. 3, pp. 449-459, Aug. 2006.

A. Orlandi, A. P. Duffy, B. Archambeault, G. Antonini, D. Coleby, and S. Connor, “Feature selective balidation (FSV) for validation of computational electromagnetics (CEM). Part II – Assessment of FSV performance,” IEEE Trans. on Electromagn. Compatibility, vol. 48, no. 3, pp. 460-467, Aug. 2006.

J. Bai, G. Zhang, L. Wang, A. Duffy, C. Liu, and T. Shao, “Comparison of calculation methods of braided shield cable transfer impedance using FSV method,” Applied Computational Electromagnetics Society Journal, vol. 30, no. 2, pp. 140-47, 2015.

IEC 621 53-4-15, Metallic communication cable test methods. Part 4-3: Electromagnetic compatibility (EMC) surface transfer impedance triaxial method.

IEC 621 53-4-7, Metallic communication cable test methods: Electromagnetic compatibility (EMC) - Test method for measuring of transfer impedance Zt and screening attenuation as or coupling attenuation ac of connectors and assemblies up to and above 3 GHz, triaxial tube in tube method.

J. Jin, The Finite Element Method in Electromagnetics, 2nd ed., John Wiley & Sons, 2002.

R. Otin, O. Fruitos, R. Isanta, and R. Mendez, “Gid interface for the parametric generation of simplified braided- wire shields geometries,” 2010.

H. Schippers, R. Isanta, R. Otina, and J. Verpoorte, “A finite element tool for the electromagnetic analysis of braided cable shields,” Computer Physics Communications, 191, pp. 209-220, June 2015.

A. T. Adams, J. Perini, M. Miyabayashi, D. H. Shau, and K. Heidary, “Electromagnetic field-towire coupling in the SHF frequency range and beyond,” in IEEE Transactions on Electromagnetic Compatibility, vol. EMC-29, no. 2, pp. 126-131, May 1987.

Downloads

Published

2020-01-01

How to Cite

[1]
Nikola Jurgec, Ivan Vukosav, Darko Marinac, and Bojan Trkulja, “Shielding Effectiveness of HSD Connector – Simulation and Measurement”, ACES Journal, vol. 35, no. 1, pp. 104–110, Jan. 2020.

Issue

Section

Articles