Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloExposure assessment of one-year-old child to 3G tablet in uplink mode and to 3G femtocell in downlink mode using polynomial chaos decomposition
Anno di pubblicazione2016
FormatoElettronico
Autore/iIlaria Liorni, Marta Parazzini, Nadege Varsier, Abdelhamid Hadjem, Paolo Ravazzani and Joe Wiart
Affiliazioni autoriIlaria Liorni, Marta Parazzini, Paolo Ravazzani: Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni IEIIT, Consiglio Nazionale delle Ricerche, Milano, Italy Nadege Varsier, Abdelhamid Hadjem: WHIST Lab, Orange, Issy les Moulineaux, France Joe Wiart: Telecom ParisTech LTCI. WHIST Lab- Chaire CMM, France
Autori CNR e affiliazioni
  • ILARIA LIORNI
  • PAOLO GIUSEPPE RAVAZZANI
  • MARTA PARAZZINI
Lingua/e
  • inglese
AbstractSo far, the assessment of the exposure of children, in the ages 0-2 years old, to relatively new radio-frequency (RF) technologies, such as tablets and femtocells, remains an open issue. This study aims to analyse the exposure of a one year-old child to these two sources, tablets and femtocells, operating in uplink (tablet) and downlink (femtocell) modes respectively. In detail, a realistic model of an infant has been used to model separately the exposures due to (i) a 3G tablet emitting at the frequency of 1940 MHz (uplink mode) placed close to the body and (ii) a 3G femtocell emitting at 2100 MHz (downlink mode) placed at a distance of at least 1 m from the infant body. For both RF sources, the input power was set to 250 mW. The variability of the exposure due to the variation of the position of the RF sources with respect to the infant body has been studied by stochastic dosimetry, based on polynomial chaos (PC) to build surrogate models of both whole-body and tissue specific absorption rate (SAR), which allow investigating easily and quickly the exposure in a full range of possible positions of the sources. The major outcomes of the study are: (1) The maximum values of the whole-body SAR (WB SAR) have been found to be 9.5 mW kg-1 in uplink mode and 65 ?W kg-1 in downlink mode, i.e. within the limits of the ICNIRP 1998 Guidelines; (2) In both uplink and downlink mode the highest SAR values were approximately found in the same tissues, i.e. in the skin, eye and penis for the whole-tissue SAR and in the bone, skin and muscle for the peak SAR; (3) the change in the position of both the 3G tablet and the 3G femtocell significantly influences the infant exposure.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da3237
Pagine a3257
Pagine totali-
RivistaPhysics in medicine & biology (Online)
Attiva dal 1996
Editore: IOP Publishing. - [Bristol]
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 1361-6560
Titolo chiave: Physics in medicine & biology (Online)
Titolo abbreviato: Phys. med. biol. (Online)
Titolo alternativo: Physics in medicine and biology (Online) (Online)
Numero volume della rivista61
Fascicolo della rivista8
DOI10.1088/0031-9155/61/8/3237
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)-
Parole chiavestochastic dosimetry, polynomial chaos, infant exposure, new RF technologies, tablet, femtocell
Link (URL, URI)http://iopscience.iop.org/article/10.1088/0031-9155/61/8/3237/meta;jsessionid=22D2F537B1398943DDEF7428BBF4E819.c4
Titolo parallelo-
Data di accettazione18/02/2016
Note/Altre informazioni-
Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR-
Progetti Europei-
Allegati
PDF version of the paper (documento privato )
Tipo documento: application/pdf

Dati associati a vecchie tipologie
I dati associati a vecchie tipologie non sono modificabili, derivano dal cambiamento della tipologia di prodotto e hanno solo valore storico.
Citazione bibliograficaLiorni I., Parazzini M., Varsier N., Hadjem A., Ravazzani P., Wiart J.: Exposure assessment of one-year-old child to 3G tablet in uplink mode and to 3G femtocell in downlink mode using polynomial chaos decomposition, Phys. Med. Biol., 61, pp. 3237-3257, 2016.