• Fryderyk Lewicki1
  • Pawel Scharoch



antenna systems, human exposure assessment, non-ionizing radiation, electromagnetic fields (EMF), radiation limits, radiation patterns


An efficient practical method for the electromagnetic (EM) fields reduction around transmitting stations has been developed. The project has been stimulated by the necessity to reduce the field levels in the vicinity of transmitting stations, including FM, UHF, cellular base stations and other radiocommunication services, to obey regulations concerning human protection against electromagnetic radiation. The main constraint in the optimization procedure is the requirement to preserve the radiated power ERP of a service in operation. The method joins accuracy with high efficiency, and is based on 3 stages procedure using the antenna numerical models of different levels of approximation. An example is given of its application to a real case of transmitting stations in which the levels of measured EM exceeded the safety limits.


[1] ICNIRP, Guidelines for limiting exposure to time-varying electric, magnetic and
electromagnetic field (up to 300 GHz), 1998
[2] IEEE limits: IEEE Std C95.1 – 2005, IEEE Standard for Safety Levels with Respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, October 2005.
[3] Polish regulations: Rozporzadzenie Ministra Srodowiska z dnia 30 pazdziernika 2003 r. w
sprawie dopuszczalnych poziomow pol elektromagnetycznych w srodowisku oraz sposobow
sprawdzania dotrzymania tych poziomow, Dz.U.2003.192.1883, Warsaw, 2003
[4] ITU-T Recommendation K.70: Mitigation techniques to limit human exposure to EMFs in the
vicinity of radiocommunication stations, Geneva 2007.
[5] F. Lewicki, Importance of antenna VRP in radiation protection consideration, Proceedings of
XVII International Wroclaw Symposium on EMC, pp. 123 – 126, Wroclaw, Poland 2004.
[6] J. C. Lin, Controversy over cellular mobile-telecommunication base-station-antenna
installations, IEEE Antennas and Propagation Magazine, vol. 46, no.1, pp. 155-156, Feb. 2004
[7] J. C. Lin, A research program on the human impact of wireless telecommunications and other
electromagnetic-field-emitting systems, IEEE Antennas and Propagation Magazine, vol. 46,no. 6. pp.
161-163, Dec. 2004
[8] J. C. Lin, Radio frequency exposure and safety associated with base stations used for personal
wireless telecommunication, IEEE Antennas and Propagation Magazine, vol. 44, no. 1, pp. 180-183,
Feb. 2002
[9] O. P. Ghandi, An on site dosimetry system for safety assessment of wireless base stations using
spatial harmonic components, IEEE Trans. on Antennas and Propagation, vol. 51, no. 4, pp. 840-847,
April 2003
[10] M. Kaluski, L. Stasierski, Electromagnetic field estimation in the vicinity of panel antenna
system for FM and TV broadcasting, IEEE Trans. on Broadcasting, vol. 41, no 4, pp. 136-142, Dec.
[11] B. Fourestié, J-C. Bolomey, T. Sarrebourse, Z Altman, J. Wiart, Spherical Near Field Facility
for Characterizing Random Emissions, IEEE Trans. on Antennas and Propagation vol. 53, pp. 2582-
2589, Aug. 2005
[12] M-Ch. Gosselin, A. Christ, S. K¨uhn, N. Kuster, Dependence of the Occupational Exposure to
Mobile Phone Base Stations on the Properties of the Antenna and the Human Body, IEEE Trans. on
Electromagnetic Compatibility, vol. 51, no. 2, pp. 227-235, May 2009
[13] B. Thors, M. L. Strydom, B. Hansson, F. J. C. Meyer, K. K¨arkk¨ainen, P. Zollman, S.
Ilvonen, Ch. T¨ornevik, On the Estimation of SAR and Compliance DistanceRelated to RF Exposure
From Mobile Communication Base Station Antennas, IEEE Trans. on Electromagnetic Compatibility,
vol. 50, no. 4, pp. 837-848, Nov. 2008
[14] A. Faraone, R. Y.-S. Tay, K. H. Joyner, and Q. Balzano, “Estimation of the average power
density in the vicinity of cellular base-station collinear array antennas,” IEEE Trans. Veh. Technol.,
vol. 49, no. 3, pp. 984–996, May 2000.
[15] Y. Adane, A. Gati, M.-F. Wong, C. Dale, J. Wiart, and V. F. Hanna, “Optimal modeling of
real radio base station antennas for human exposure assessment using spherical-mode
decomposition,” IEEE Antennas Wireless Propag. Lett., vol. 1, pp. 215–218, 2002.
[16] R. Cicchetti and A. Faraone, “Estimation of the peak power density in the vicinity of cellular
and radio base station antennas,” IEEE Trans. Electromagn. Compat., vol. 46, no. 2, pp. 275–290,
May 2004.
[17] J. Cooper, B. Marx, J. Buhl, and V. Hombach, “Determination of safety distance limits for a
human near a cellular base station antenna, adopting the IEEE Standard or ICNIRP Guidelines,”
Bioelectromagnetics, vol. 23, no. 6, pp. 429–443, 2002.
[18] P. Bernardi, M. Cavagnaro, R. Cicchetti, S. Pisa, E. Piuzzi, and O. Testa, “A UTD/FDTD
investigation on procedures to assess compliance of cellular base-station antennas with humanexposure limits in a realistic urban environment,” IEEE Trans. Microw. Theory Tech., vol. 51, no. 12,
pp. 2409–2417, Dec. 2003.
[19] W. Joseph and L. Martens, “Comparison of safety distances based on the electromagnetic
field and based on the sar for occupational exposure of a 900 MHz base station antenna,” IEEE
Trans. Electromagn. Compat., vol. 47, no. 4, pp. 977–985, Nov. 2005.
[20] F. J. C. Meyer, D. B. Davidson, U. Jakobus, and M. A. Stuchly, “Human exposure assessment
in the near field of GSM base-station antennas using a hybrid finite element/method of moments
technique,” IEEE Trans. Biomed. Eng., vol. 50, no. 2, pp. 224–233, Feb. 2003
[21] L. Catarinucci, P. Palazzari, and L. Tarricone, “Human exposure to the near field of
radiobase antennas—a full wave solution using parallel FDTD,” IEEE Trans.Microw. Theory Tech.,
vol. 51, no. 3, pp. 935–940, Mar. 2003.
[22] M. J. van Wyk, M. Bingle, and F. J. C. Meyer, “Antenna modeling considerations for
accurate SAR calculations in human phantoms in close proximity to GSM cellular base station
antennas,” Bioelectromagnetics, vol. 26, pp. 502–509, 2005.
[23] EN 50383, Basic standard for the calculation and measurement of electromagnetic field
strength and SAR related to human exposure from radio base stations and fixed terminal stations for
wireless telecommunication systems, CENELEC, Brussels, August 2002.




How to Cite

Fryderyk Lewicki1, & Pawel Scharoch. (2015). AN EFFICIENT METHOD OF EM FIELD MODIFICATION AROUND TRANSMITTING STATIONS. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 14(1), 121-131.



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