Applied Electromagnetics

Applied Electromagnetics

Analyzing and measuring the arrangement and movement of the stirrers on the self-correlation coefficient and the performance of the RTS60 reverberation chamber

Document Type : Original Article

Authors
Mojtaba Basravi 1
Zaker Hossein Firouzeh 2
hadi aliakbarian 3
1 PhD Student, Isfahan University of Technology, Isfahan, Iran
2 Professor, Isfahan University of Technology, Isfahan, Iran
3 Associate Professor,K. N. Toosi University of Technology.Tehran, Iran
Abstract
The reverberation chamber has wide applications in antenna, microwave, electromagnetic compatibility, measurement of material properties, etc. The reverberation chamber works based on the stirre of excited modes in a closed conductive chamber by a number of stirrers. In this paper, the influence of the arrangement of the stirrers in creating the number of independent modes that lead to the uniformity of the field in the reverberation chamber is investigated. In this paper, in order to estimate the appropriate analysis, the electric field intensity has been measured for three modes of stirrers (50 steps, 100 steps and 380 steps) in the RTS60 resonance chamber. The number of independent modes in 25 frequency points in the range of 250 to 900 MHz for three modes, as well as the values of the autocorrelation coefficient, which indicates the degree of independence of the excited modes in the chamber, are presented.
Keywords
reverberation chamber
correlation coefficient
independent modes

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[1] Q. Xu, Y. Huang, “Anechoic and reverberation chambers, Theory, design and measurement,” IEEE Press, Wiley, 2019.
[2] P. Besnier and B. Demoulin, “Electromagnetic Reverberation Chambers,” Wiley, 2011.
[3] V. S. Koppen, X. T. Nguyen, J. J. Mielnik, “Reverberation Chamber Uniformity Validation and Radiated Susceptibility Test Procedures for the NASA High Intensity Radiated Fields Laboratory”, NASA technical note, 2010.
[4] R. Serra, A. C. Marvin, F. Moglie, V. M. Primiani, A. Cozza, L. R. Arnaut, Y. Huang, M. O. Hatfield, M. Klingler, and F. Leferink, “Reverberation Chambers à La Carte: An Overview of the Different Mode-Stirring Techniques,” IEEE Electromagnetic Compatibility Magazine, Vol. 6, Q. 1, 2017.
 
[5] D. Barakos, R. Ramiro, “Performance Characterization of the OscillatingWall Stirrer,” International Symposium on Electromagnetic Compatibility EMC EUROPE 2017, Angers, France, September 4-8, 2017.
[6] J. Clegg, C. Marvin, F. Dawson, and J. Porter, “Optimization of Stirrer Designs in a Reverberation,” IEEE Transaction on Electromagnetic Compatibility, Vol. 47, No. 4, Nov 2005.
[7] O. Legrand, U. Kuhl, F. Mortessagne, K. Oubaha, and M. Richter, “Chaotic reverberation chambers for electromagnetic Compatibility,” HAL Journal, HAL Id: hal-02014277, Feb 2019.
 [8] Electromagnetic compatibility (EMC): testing and measurement techniques- Reverberation chamber test method, IEC-61000-4-21, 2011.
[9] D. A. Hill, “Electromagnetic theory of reverberation chambers,” NIST technical note 1506, 1998.
[10] C. Bruns, “Three-dimensional simulation and experimental verification of a reverberation chamber,” Ph.D. dissertation, Swiss Federal Institute of Technology Zurich, 2005.
[11] O. LundCn and M. Backstrom, “Stirrer efficiency in FOA reverberation chambers. Evaluation of correlation coefficients and chi-squared tests,” FOA Defence Research Establishment, P.O. Box 1165, S-581 11 Linkoping, Sweden, 2000.
[12] BLUETEST Company, “RTS60 Reverberation Test System catalog,” BTD-10:019 RevG, www.bluetest.se, February 2024.
[13] P. Ehsan, F. Ghorbani, R. Asadi, and H. Aliakbarian, “Standard Deviation Characterization of a Small Size Reverberation Chamber by Using Full-wave Simulation and E-Field Probe,” Journal of Information Systems and Telecommunication (JIST) 2, no. 26, 2020.
Applied Electromagnetics
Volume 13, Issue 1 - Serial Number 30
Spring and Summer
September 2025
Pages 75-84

  • Receive Date 08 April 2025
  • Revise Date 04 June 2025
  • Accept Date 08 July 2025
  • Publish Date 23 August 2025