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Characterization and Evaluation of a Commercial WLAN System for Human Provocation Studies.

Zentai N, Fiocchi S, Parazzini M, Trunk A, Juhász P, Ravazzani P, Hernádi I, Thuróczy G - Biomed Res Int (2015)

Bottom Line: Finally, the specific absorption rate (SAR) generated by the CU was estimated computationally in the head of two human models.Results suggest that exposure to RF fields of WLAN systems strongly depends on the sets of the router configuration: the stability of the exposure was more constant and reliable when both antennas were active and vertically positioned, with best signal quality obtained with the R52n router board at channel 9, in UDP mode.The maximum levels of peak SAR were far away from the limits of international guidelines with peak levels found over the skin.

View Article: PubMed Central - PubMed

Affiliation: Department of Experimental Neurobiology, University of Pécs, 6 Ifjúság Útca, Pécs 7624, Hungary.

ABSTRACT
This work evaluates the complex exposure characteristics of Wireless Local Area Network (WLAN) technology and describes the design of a WLAN exposure system built using commercially available modular parts for the study of possible biological health effects due to WLAN exposure in a controlled environment. The system consisted of an access point and a client unit (CU) with router board cards types R52 and R52n with 18 dBm and 25 dBm peak power, respectively. Free space radiofrequency field (RF) measurements were performed with a field meter at a distance of 40 cm from the CU in order to evaluate the RF exposure at several signal configurations of the exposure system. Finally, the specific absorption rate (SAR) generated by the CU was estimated computationally in the head of two human models. Results suggest that exposure to RF fields of WLAN systems strongly depends on the sets of the router configuration: the stability of the exposure was more constant and reliable when both antennas were active and vertically positioned, with best signal quality obtained with the R52n router board at channel 9, in UDP mode. The maximum levels of peak SAR were far away from the limits of international guidelines with peak levels found over the skin.

No MeSH data available.


Related in: MedlinePlus

Measured electric field strength as a function of nominal output power with UDP or TCP data transfer mode (as set by the router configuration utility) with using R52 or R52n router board card. Data rate was left unconstrained for this test. Asterisks mark the cases where the router board was unable to generate the maximum data rate (30 Mbps). Only data for channel 1 is shown here to allow comparison between the different modes.
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fig8: Measured electric field strength as a function of nominal output power with UDP or TCP data transfer mode (as set by the router configuration utility) with using R52 or R52n router board card. Data rate was left unconstrained for this test. Asterisks mark the cases where the router board was unable to generate the maximum data rate (30 Mbps). Only data for channel 1 is shown here to allow comparison between the different modes.

Mentions: The electric field strength generated by the two wireless cards with the two different transmission protocols for channel 1 was evaluated as a function of the nominal output power as set by the router configuration utility (in WinBox software) (Figure 8).


Characterization and Evaluation of a Commercial WLAN System for Human Provocation Studies.

Zentai N, Fiocchi S, Parazzini M, Trunk A, Juhász P, Ravazzani P, Hernádi I, Thuróczy G - Biomed Res Int (2015)

Measured electric field strength as a function of nominal output power with UDP or TCP data transfer mode (as set by the router configuration utility) with using R52 or R52n router board card. Data rate was left unconstrained for this test. Asterisks mark the cases where the router board was unable to generate the maximum data rate (30 Mbps). Only data for channel 1 is shown here to allow comparison between the different modes.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4477099&req=5

fig8: Measured electric field strength as a function of nominal output power with UDP or TCP data transfer mode (as set by the router configuration utility) with using R52 or R52n router board card. Data rate was left unconstrained for this test. Asterisks mark the cases where the router board was unable to generate the maximum data rate (30 Mbps). Only data for channel 1 is shown here to allow comparison between the different modes.
Mentions: The electric field strength generated by the two wireless cards with the two different transmission protocols for channel 1 was evaluated as a function of the nominal output power as set by the router configuration utility (in WinBox software) (Figure 8).

Bottom Line: Finally, the specific absorption rate (SAR) generated by the CU was estimated computationally in the head of two human models.Results suggest that exposure to RF fields of WLAN systems strongly depends on the sets of the router configuration: the stability of the exposure was more constant and reliable when both antennas were active and vertically positioned, with best signal quality obtained with the R52n router board at channel 9, in UDP mode.The maximum levels of peak SAR were far away from the limits of international guidelines with peak levels found over the skin.

View Article: PubMed Central - PubMed

Affiliation: Department of Experimental Neurobiology, University of Pécs, 6 Ifjúság Útca, Pécs 7624, Hungary.

ABSTRACT
This work evaluates the complex exposure characteristics of Wireless Local Area Network (WLAN) technology and describes the design of a WLAN exposure system built using commercially available modular parts for the study of possible biological health effects due to WLAN exposure in a controlled environment. The system consisted of an access point and a client unit (CU) with router board cards types R52 and R52n with 18 dBm and 25 dBm peak power, respectively. Free space radiofrequency field (RF) measurements were performed with a field meter at a distance of 40 cm from the CU in order to evaluate the RF exposure at several signal configurations of the exposure system. Finally, the specific absorption rate (SAR) generated by the CU was estimated computationally in the head of two human models. Results suggest that exposure to RF fields of WLAN systems strongly depends on the sets of the router configuration: the stability of the exposure was more constant and reliable when both antennas were active and vertically positioned, with best signal quality obtained with the R52n router board at channel 9, in UDP mode. The maximum levels of peak SAR were far away from the limits of international guidelines with peak levels found over the skin.

No MeSH data available.


Related in: MedlinePlus