TY - JOUR
T1 - Evaluating near-field radiation patterns of commercial antennas
AU - Las-Heras, Fernando
AU - Pino, Marcos Rodríguez
AU - Loredo, Susana
AU - Alvarez, Yuri
AU - Sarkar, Tapan K.
N1 - Funding Information:
Manuscript received May 25, 2005; revised March 27, 2006. This work was supported by the “Ministerio de Educación y Ciencia” of Spain under projects TIC2002-02391 and TEC2005-03563 by the “Gobierno del Principado de As-turias” under project PC04-49 and by the “Cátedra Telefónica-Universidad de Oviedo.” F. Las-Heras, M. R. Pino, S. Loredo and Y. Alvarez are with the Univ. de Oviedo, Area Teoría de la Señal y Comunicaciones, Dept. Ingeniería Eléctrica, Campus Universitario, E-33204 Gijón, Spain (e-mail: [email protected]).
PY - 2006/8
Y1 - 2006/8
N2 - A source reconstruction technique from the measured near fields is proposed to obtain a set of equivalent currents that will characterize the forward and backward radiation patterns of an antenna. Once the equivalent sources are determined, the electromagnetic field at any aspect angle and distance from the antenna can be calculated. In this paper, the method is applied to the evaluation of the radiation from commercial antennas at any observation point. The electric field patterns of a DCS base station antenna at 1800 MHz and a horn antenna at 2500 MHz have been calculated and plotted at several distances from the antenna. This method can be used in characterizing the "reference volumes" or exclusion zones for transmitting antennas dealing with the maximum levels of electromagnetic radiation safe for human exposure, as stated in many national and international regulations.
AB - A source reconstruction technique from the measured near fields is proposed to obtain a set of equivalent currents that will characterize the forward and backward radiation patterns of an antenna. Once the equivalent sources are determined, the electromagnetic field at any aspect angle and distance from the antenna can be calculated. In this paper, the method is applied to the evaluation of the radiation from commercial antennas at any observation point. The electric field patterns of a DCS base station antenna at 1800 MHz and a horn antenna at 2500 MHz have been calculated and plotted at several distances from the antenna. This method can be used in characterizing the "reference volumes" or exclusion zones for transmitting antennas dealing with the maximum levels of electromagnetic radiation safe for human exposure, as stated in many national and international regulations.
KW - Atenna measurement
KW - Equivalent magnetic currents
KW - Human exposure
KW - Near-field pattern
KW - Near-field to far-field transformation
KW - Non-ionizing EM fields
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U2 - 10.1109/TAP.2006.879190
DO - 10.1109/TAP.2006.879190
M3 - Article
AN - SCOPUS:33747626935
SN - 0018-926X
VL - 54
SP - 2198
EP - 2207
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 8
ER -