A Study on Upper Limit Frequency of Symmetric Extended TEM Cells

Authors

  • Chunjiang Song Department of Engineering Physics Tsinghua University, Beijing, 100084, China
  • Xinkai Fu School of Electronic and Information Engineering Beihang University, Beijing, 100191, China
  • Fei Dai School of Electronic and Information Engineering Beihang University, Beijing, 100191, China

Keywords:

Resonant frequency, resonant modes, TEM Cells, upper limit frequency

Abstract

TEM Cells is a commonly used electromagnetic field test device. The upper limit frequency of the TEM Cells is limited to the first resonant frequency. Through the electromagnetic numerical simulation, this paper analyzes the resonant frequency law of high-order modes and studies the resonant frequency characteristics and the upper limit of the frequency of symmetrically extended TEM Cells. Studies have shown that there is an error in the estimated value of the Xmn parameter used in the conventional standard TEM Cells resonant frequency calculation method, which may lead to errors in the order of the resonant modes. Symmetrically extended TEM Cells do not change the original resonant frequency, but because of the coupling modes of even mode and odd mode between two cell units, each of the original resonant frequencies will split two close resonant frequency.

Downloads

Download data is not yet available.

References

M. L. Crawford, “Generation of standard EM fields using TEM transmission cells,” IEEE Transactions on Electromagnetic Compatibility, vol. EMC-16, no. 3, pp. 189-195, Nov. 1974.

D. A. Hill, “Bandwidth limitation of TEM cells due to resonances,” Journal of Microwave Power, vol. 18, no. 2, pp. 181-195, 1983.

P. Wilson and M. Ma, “Simple approximate expressions for higher-order mode cutoff and resonant frequencies in TEM cells,” IEEE Transactions on Electromagnetic Compatibility, vol. 28, no. 3, pp. 125-130, Aug. 1986.

M. L. Crawford, J. L. Workman, and C. L. Thomas, “Expanding the bandwidth of TEM cells for EMC measurements,” IEEE Transactions on Electromagnetic Compatibility, vol. EMC-20, no. 3, pp. 368-375, Aug. 1978.

IEEE. STD 1309-2005, IEEE Standard for Calibration of Electromagnetic Field Sensors and Probes, Excluding Antennas, From 9 kHz to 40 GHz, 2005.

Z. Chen, “Examinations of higher-order mode cutoff frequencies in symmetrical TEM cells,” IEEE International Symposium on Electromagnetic Compatibility, Austin, TX, pp. 6-11, Aug. 2009.

IEEE. STD 1309-2013, IEEE Standard for Calibration of Electromagnetic Field Sensors and Probes, Excluding Antennas, From 9 kHz to 40 GHz, 2013.

S. W. Deng, D. Pommerenke, T. Hubing, et al., “Mode suppressed TEM cell design for high frequency IC measurements,” IEEE International Symposium on Electromagnetic Compatibility, 1-6, 2007.

S. W. Deng, D. Pommerenke, T. Hubing, et al., “An experimental investigation of higher-order mode suppression in TEM cells,” IEEE Transactions on Electromagnetic Compatibility, vol. 50, pp. 416-419, 2008.

K. Malathi and D. Annapurna, “Numerical analysis of impedance of asymmetric TEM cell filled with inhomogeneous, isotropic dielectric,” Applied Computational Electromagnetics Society Journal, vol. 19, pp. 39-45, 2004.

D. Virginie, “Optimization of three-dimensional TEM cell for electromagnetic compatibility testing,” 20th Annual Review of Progress in Applied Computational Electromagnetics, 2004.

F. Dai, M. Wang, and D. L. Su, “A design of new twin TEM cells,” IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications Proceedings, vol. 1, pp. 10-13, 2005.

C. J. Song and X. Y. Feng, “A new design and implementation of expanding testing space of a transverse electromagnetic cell,” The 9th International Conference on Microwave and Millimeter Wave Technology, vol. 2, pp. 967-969, 2016.

Downloads

Published

2021-07-18

How to Cite

[1]
Chunjiang Song, Xinkai Fu, and Fei Dai, “A Study on Upper Limit Frequency of Symmetric Extended TEM Cells”, ACES Journal, vol. 33, no. 12, pp. 1368–1373, Jul. 2021.

Issue

Section

General Submission