SAR evaluation by modal decomposition using induced near-field of equivalent current sources

Ouanes Aiouaz (1, 2) , David Lautru (2) , Man-Faï Wong (1) , Azeddine Gati (1) , Joe Wiart (1) , Victor Fouad Hanna (2)

1 Orange Labs [Issy les Moulineaux]
2 L2E - Laboratoire d'Electronique et Electromagnétisme

Modal expansion of the electric field induced on a head model by a cellular phone is proposed. This technique used equivalent currents on a surface according to Huygens principle. Using Singular Value Decomposition technique, we are able to determine the modes excited by these equivalent sources in a lossy media and to expand the E-field in terms of local modes in the media. Finally, the specific absorption rate (SAR) is directly evaluated.

Mots clés: Cellular phones; Current measurement; Electric fields; Finite difference methods; Magnetic field measurement; Probes; Time domain analysis

Domaines: Electromagnétisme

Ouanes Aiouaz, David Lautru, Man-Faï Wong, Azeddine Gati, Joe Wiart, et al.. SAR evaluation by modal decomposition using induced near-field of equivalent current sources. EMTS 2010, Aug 2010, Berlin, Germany. pp.544-546, ⟨10.1109/URSI-EMTS.2010.5637180⟩. ⟨hal-00598713⟩