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International Journal of Antennas and Propagation
Volume 2014, Article ID 147341, 10 pages
http://dx.doi.org/10.1155/2014/147341
Research Article

Simulations and Measurements of Electric Fields Emitted from a LTE Base Station in an Urban Area

Department of Communications Engineering, Yuan Ze University, 135 Yuan-Tung Road, Nei-Li, Chung-Li, Taoyuan Shian 320, Taiwan

Received 24 May 2014; Revised 28 July 2014; Accepted 26 August 2014; Published 13 October 2014

Academic Editor: Tamer S. Ibrahim

Copyright © 2014 Hsing-Yi Chen and Tsung-Han Lin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Radiation patterns emitted from a long-term evolution (LTE) base station antenna were first simulated by the finite-difference time domain (FDTD) method. The validity of simulation results of radiation patterns was further checked by measurement data. After validating the accuracy of the FDTD method, electric fields at 123 test sites around a LTE base station in an urban area of Taipei City were simulated. Simulated electric fields were also validated by comparison with measured data obtained by a high frequency selective radiation meter with an isotropic E-field probe. Simulated and measured electric fields are in the range of 0.104–1.182 and 0.098–1.179 V/m at 1795 MHz, respectively. From obtained electric field strengths, it is ensured that the urban area is a good signal environment. The maximum power density emitted from the LTE base station is about mW/cm2 and is thus far below the safety standard value of 1.197 mW/cm2 for human exposure to RF radiation at 1795 MHz.