volume | PIER Journals

Abstract

A modal-expansion method is proposed for the analysis of a monopole antenna in a vibrating reverberation chamber. Inside the chamber, electromagnetic fields are expanded using modal functions. Mode matching process is applied to enforce the boundary conditions at regional interfaces. Boundary conditions on the four side walls of the chamber are imposed by the point matching method. Combining these two matching processes, a set of matrix equations are obtained and the expansion coefficients can then be determined accordingly. The loss from the chamber walls is accounted for through homogeneous material filling. The input impedance and scattering parameter of a monopole in a reverberation chamber are computed and statistical analysis of the scattering parameter is conducted when one of its walls is vibrating.

1. Ma, M., "Understanding reverberating chambers as an alternative facility for EMC testing," Journal of Electromagnetic Waves and Applications, Vol. 2, No. 3-4, 339-351, 1988.
doi:10.1163/156939388X00260 Google Scholar

2. Wang, Y., W. Koh, and C. Lee, "Coupling cross section and shielding effectiveness measurements on a coaxial cable by both mode-tuned reverberation chamber and Gtem cell methodologies," Progress In Electromagnetics Research, Vol. 47, 61-73, 2004.
doi:10.2528/PIER03100101 Google Scholar

3. Serafimov, N., P.-S. Kildal, and T. Bolin, "Comparison between radiation efficiencies of phone antennas and radiated power of mobile phones measured in anechoic chamber and reverberation chamber," Proc. IEEE Antennas Propag. Soc. Int. Symp., Vol. 2, 478-481, June 2002. Google Scholar

4. Kildal, P.-S., C. Carlsson, and J. Yang, "Measurement of free space impedances of small antennas in reverberation chambers," Microw. Opt. Tech. Lett., Vol. 32, No. 2, 112-115, January 2002.
doi:10.1002/mop.10105 Google Scholar

5. Rosengren, K. and P.-S. Kildal, "Radiation efficiency, correlation, diversity gain, and capacity of a six monopole antenna array for a MIMO system: Theory, simulation and measurement in reverberation chamber," Proc. IEEE Microw. Antennas and Propag., Vol. 152, No. 1, 7-16, 2005.
doi:10.1049/ip-map:20045031 Google Scholar

6. Khaleghi, A., "Diversity techniques with parallel dipole antennas: Radiation pattern analysis," Progress In Electromagnetics Research, Vol. 64, 23-42, 2006.
doi:10.2528/PIER06062401 Google Scholar

7. Hill, D., "Electronic mode stirring for reverberation chambers," IEEE Trans. Electromagn. Compat., Vol. 36, No. 4, 294-299, 1994.
doi:10.1109/15.328858 Google Scholar

8. Carlberg, U., P.-S. Kildal, and J. Carlsson, "Study of antennas in reverberation chamber using method of moments with cavity Green’s function calculated by ewald summation," IEEE Trans. Electromagn. Compat., Vol. 47, No. 4, 805-814, 2005.
doi:10.1109/TEMC.2005.858755 Google Scholar

9. Cerri, G., V. Primiani, S. Pennesi, and P. Russo, "Source stirring mode for reverberation chambers," IEEE Trans. Electromagn. Compat., Vol. 47, No. 4, 815-823, 2005.
doi:10.1109/TEMC.2005.858757 Google Scholar

10. Kouveliotis, N., P. Trakadas, and C. Capsalis, "FDTD modelling of a vibrating intrinsic reverberation chamber," Journal of Electromagnetic Waves and Applications, Vol. 17, No. 6, 849-850, 2003.
doi:10.1163/156939303322503394 Google Scholar

11. Cappetta, L., M. Feo, V. Fiumara, V. Pierro, and I. Pinto, "Electromagnetic chaos in mode stirred reverberation enclosures," IEEE Trans. Electromagn. Compat., Vol. 40, No. 3, 185-192, 1998.
doi:10.1109/15.709415 Google Scholar

12. Kouveliotis, N., P. Trakadas, and C. Capsalis, "Theoretical investigation of the field conditions in a vibrating reverberation chamber with an unstirred component," IEEE Trans. Electromagn. Compat., Vol. 45, No. 1, 77-80, 2003.
doi:10.1109/TEMC.2002.808072 Google Scholar

13. Karlsson, K., J. Carlsson, and P.-S. Kildal, "Reverberation chamber for antenna measurements: modeling using method of moments, spectral domain techniques, and asymptote extraction," IEEE Trans. Electromagn. Compat., Vol. 54, No. 11, 3106-3113, 2006. Google Scholar

14. Nie, X., N. Yuan, L. Li, and Y. Gan, "Accurate modeling of monopole antennas in shielded enclosures with apertures," Progress In Electromagnetics Research, Vol. 79, 251-262, 2008.
doi:10.2528/PIER07100403 Google Scholar

15. Kim, J. and H. Eom, "Radiation from multiple annular slots on a circular cylindrical cavity," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 1, 47-56, 2007.
doi:10.1163/156939307779391713 Google Scholar

16. Ock, J. and H. Eom, "Radiation of a hertzian dipole in a shortended conducting circular cylinder with narrow circumferential slots," Progress In Electromagnetics Research Letters, Vol. 2, 11-20, 2008. Google Scholar

17. Shen, Z. and R. H. MacPhie, "Theoretical modeling of multi-sleeve monopole antennas," Progress In Electromagnetics Research, Vol. 31, 31-54, 2001.
doi:10.2528/PIER00041802 Google Scholar

18. Shen, Z. and R. MacPhie, "Rigorous evaluation of the input impedance of a sleeve monopole by modal-expansion method," IEEE Trans. Antennas Propagat., Vol. 44, No. 12, 1584-1591, 1996.
doi:10.1109/8.546244 Google Scholar

19. Kuwano, S., M. Deno, and K. Kokubun, "A precise mode-matching technique for characterizing an H-plane waveguide Y-junction with an arbitrary angle," Journal of Electromagnetic Waves and Applications, Vol. 17, No. 7, 969-987, 2003.
doi:10.1163/156939303322519063 Google Scholar

20. Jiang, Z., Z. Shen, and X. Shan, "Mode-matching analysis of waveguide T-junction loaded with an H-plane dielectric slab," Journal of Electromagnetic Waves and Applications, Vol. 16, No. 11, 1613-1614, 2002.
doi:10.1163/156939302X01029 Google Scholar

21. Akbarzadeh, A. and Z. Shen, "On the gap source model for monopole antennas," IEEE Antennas Wireless Propag. Lett., Vol. 7, 115-118, 2008.
doi:10.1109/LAWP.2008.919816 Google Scholar

22. Bladel, J., Electromagnetic Fields, John Wiley and Sons, 2007.

23. Kolundzija, B., J. Ognjanovic, and T. Sarkar, WIPL-D, Electromagnetic Modeling of Composite Metallic and Dielectric Structures, Artech House, 2000.

24. Huang, E. and A. Fung, "An application of sampling theorem to moment method simulation in surface scattering," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 4, 531-546, 2006.
doi:10.1163/156939306776117063 Google Scholar

Dr. Huapeng Zhao

Dr. Zhongxiang Shen