Vol. 32
Latest Volume
All Volumes
Description of Electrically Small Resonant Antennas by Electric and Magnetic Dipoles
Progress In Electromagnetics Research B, Vol. 32, 191-216, 2011
A new kind of field representation on the far field sphere is presented. This representation is based upon the polarisation states of the field. Polarisation states can easily be obtained upon determining the peculiar loci in the field. Depending on the polarisation state of the field, it is demonstrated that, either one of the magnetic or the electric dipole moments is dominant. Subsequently, criteria which may be applied to determine which dipole moment is responsible for the main radiation are derived. This characterization scheme which is a good figure of merit for an antenna designer may be useful in mobile communications especially in identifying possible adverse effects of RF fields on human health. The approach is also helpful for EMC engineers seeking to characterize and identify radiation sources of equipment under test.
David Pouhe, Joel A. Tsemo Kamga, and Gerhard Moenich, "Description of Electrically Small Resonant Antennas by Electric and Magnetic Dipoles," Progress In Electromagnetics Research B, Vol. 32, 191-216, 2011.

1. Chen, K. M. and J. C. Lin, "Biological effects of electromagnetic fields," Handbook of Electromagnetic Compatibility, R. Perez, Academic Press, San Diego, New York, Boston, etc., 1995.

2. Pouhè, D., G. Mönich, and J. A. Tsemo Kamga, "Decomposition of electrically small resonant antennas into their electric and magnetic part by far field polarisation analysis," Proc. EuCAP, 428-432, Berlin, March 23--27, 2009.

3. Mott, H., Polarisation in Antennas and Radar, J. Willey & Sons, New York, Chichester, etc., 1986.

4. Rahola, J. and J. Krogerus, "On the polarization state of mobile terminals," Proc. 12th. ICAP, Vol. 2, 695-698, Exeter, March 31--April 3, 2003.

5. Hansen, W. W., "A new type of expansion in radiation problems," Phys. Rev., Vol. 47, 139-143, 1935.

6. Stratton, J. A., Electromagnetic Theory, Chapter 7, IEEE Press, J. Wiley & Sons, 2007.

7. Harrington, R. F., On the gain and beamwidth of directional antennas, 219-225 IRE AP-6, July 1958.

8. Ludwig, A. C., "Near-field far-field transformations using spherical-wave expansions," IEEE Transactions on Antennas and Propagation, Vol. 19, No. 2, 214-220, March 1971.

9. Zinke, O. and H. Brunswig, Lehrbuch der Hochfrequenztechnik, Kap. 6, Band 1, Springer-Verlag, Berlin, 1990.

10. Balanis, C. A., Antenna Theory Analysis and Design, 776, J. Willey & Sons, New York, Chichter, etc., 1982.

11. Huynh, M. C., Wideband Compact Antennas for Wireless Communication Applications, Dissertation, Virginia Poly. Inst. and State University, November 2004.

12. Smith, G. S., An Introduction to Classical Electromagnetic Radiation, Cambridge University Press, 1997.

13. Stutzman, W. L., Polarization in Electromagnetic Systems, Artech House, Boston, London, 1993.