- Volume 11 Issue 9
The Study was carreid out to see whether the intensity of electromagnetic waves in each floor of a building where the sharing base station has been established is harmful to a human body, and to expect the intensity of the waves in the building. The investigate was performed on both of sharing base station either with many scatterers or without any of them. To satisfy the international standard and the domestic TTA standard, rms for each of the electromagnetic wave of every floor in the building with the station was measured from 3 location of 3 heights(1.1m,1.5m, and 1.7m). Max of the measured rsm from the each of the frequencies in the nine location was confirmed to be 48.12%(the rooftop measured value) at most, compared to the human body protection standard. The value was confirmed to satisfy the human body protection standard for each frequency. And the total value of the calculated exposure indexes for each frequency was determined to be more than 7 times lower at most, which was 0.1445, compared to the 1 standard. Since P value in both of 868MHz and 2.14GHz electromagnetic waves intensity for each base station and floor was less than 0.05, it was revealed to be meaningful, and since R-Sq(adj) value showed a value more than 50%, the regression equation was determined to fully absorb the data information. However, although the P value of both of 868MHz and 2.14GHz electromagnetic waves intensities under the integrating terms of the base station data and the floor data was showed to be less than 0,05, since R-Sq(adj) value of 868MHz electromagnetic waves intensity presented a value smaller than 50%(34.15%), it was determined that the 868MHz electromagnetic waves intensity is very much influenced by an environment with a base station. Because the electromagnetic waves intensity of 2.14GHz show R-Sq(adj) value bigger then 50%(51.8%), The regression equation model of 2.14GHz electromagnetic waves intensity was confirmed to be proper. It also turned out not to be effected by the surrounding environment near a building with the base station and the intensity of electromagnetic waves for each floor of such building was expectable by the regression equation.
Base Station;Electromagnetic Wave;Harmful;Statistic
- Abdei G. Rassoul, "Neurobehavioral effects among inhabitants around mobile phone base stations," Neurotoxicology, Vol.28, No.2, pp.434-440, 2007. https://doi.org/10.1016/j.neuro.2006.07.012
- J. Everaert, "A possible Effect of Electromagnetic Radiation from Mobile Phone Base Stations on the Number of Breeding House Sparrow (Passer domesticus)," Electromagn Biol Med, Vol.26, No.1, pp.63-72, 2007. https://doi.org/10.1080/15368370701205693
- 오학태, 전파 연구소, "전자파 노출 환경평가 기준 연구", pp.237-243, 2007.
- 최형도, 전파진흥원, "정보 통신부, 전자파 영향 및 표준화 연구", pp.45-271, 2007.
- I. Mark, Montrose, EMC를 고려한 PCB 설계 기술, jinhan M&B, pp.474-475, 2006.
- 양병화, 다변량 데이터 분석법의 이해, 커뮤니케이션북스, pp.61-95, 2006.
- 이레테크 Minitab사업팀, 새 Minitab 실무 완성, 이레테크, pp.398-431, 2009.
- 노형진, 다변량분석 이론과 실제, 형설출판사, pp.61-79, 2005.
- 백정기, 전파 연구소, "인체 노출량 평가방법 표준화 연구", pp.17-52, 2006.
- ICNIRP Guidelines, "Guideline for limiting exposure to time‐varying Electric, Magnetic, and Electromagnetic fields (Up to 300GHz)
- S. J. Regel, "UMTS base station like exposure, well being, and cognitive Performance," Environ Health Perspect, Vol.114, No.8, pp.1270-1275, 2006. https://doi.org/10.1289/ehp.8934
- A. Maes, Flemish Institute for Technological Research (VITO), Cytogenetic investigation of subjects professionally exposed to radiofrequency radiation, Mutagenesis, Vol.21, No.2, pp.139-142, 2006. https://doi.org/10.1093/mutage/gel008
- H. P. Hutter, "Subjective symptoms, sleeping problems, and cognitive performance in subjects living near mobile phone base stations," Occup Environ Med, Vol.63, No.5, pp.307-313, 2006. https://doi.org/10.1136/oem.2005.020784
- H. Hinrichs, "Human Sleep Under the Influence of a GSM 1800 Electromagnetic Far Field," Somnologie, Vol.9, No.4, pp.185-191, 2005. https://doi.org/10.1111/j.1439-054X.2005.00069.x
- A. Balmori, "Possible Effects of Electromagnetic Fields from Phone Masts on a Population of White Stork (Ciconia ciconia)," Electromagn Biol Med, Vol.24, No.2, pp.109-119, 2005. https://doi.org/10.1080/15368370500205472
- N. Sakuma, Kashima Laboratory, Mitsubishi Chemical Safety Institute Ltd., Japan, "DNA strand breaks are not induced in human cells exposed to 2.1425 GHz band CW and WCDMA modulated radiofrequency fields allocated to mobile radio base stations," Bioelectromagnetics, Vol.27, No.1, pp.51-57, 2006. https://doi.org/10.1002/bem.20179
- I. S. Riddervold, "Cognitive function and symptoms in adults and adolescents in relation to rf radiation from UMTS base stations," Bioelectromagnetics, Vol.29, No.4, pp.257-267, 2008. https://doi.org/10.1002/bem.20388
- S. Eltiti, "Does Short‐Term Exposure to Mobile Phone Base Station Signals Increase Symptoms in Individuals who report sensitivity to electromagnetic Fields? A Double Blind Randomised Provocation Study," Environ Health Perspect, Vol.115, No.11, pp.1603-1608, 2007. https://doi.org/10.1289/ehp.10286
- G. Fritzer, Christian Albrechts University, Germany, "Effects of short and long term pulsed radiofrequency electromagnetic fields on night sleep and cognitive functions," Bioelectromagnetics, Vol.28, No.4, pp.316-325, 2007. https://doi.org/10.1002/bem.20301
- 김기채, 전자파 환경 공학, 대영사, pp.23-47, 2001.