Naslov
Influence of source internal impedance on uncertainity of SAR calculations in RF hazard studies using FDTD

Autori
Hrabar, Silvio ; Balachandran, Wamadeva ; Bartolić, Juraj

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 10 Journees internationales de Nice sur les antennes (JINA) / Damiano, Jean-Pierre - Nica : University of Nice, 1998, 742-745

Skup
10 Journees internationales de Nice sur les antennes (JINA)

Mjesto i datum
Nica, Francuska, 17.11.1998. - 19.11.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
SAR; hard source; FDTD

Sažetak
The finite difference time domain (FDTD) method is widely used for numerical calculations of energy absorption in humans exposed to RF radiatio from mobile telecommunication equipment. A transmitter driving an antenna is frequently modeled as a simple zero-impedance voltage generator (hard source). Hard source model neglects dissipation of reflected power in transmitter internal resistance and therefore, yields an uncertainty in specific absorption rate (SAR) calculation. An expression for the uncertainty of SAR calculations is derived using simple circuit model of antenna-scatterer interaction. Based on the data from the literature and experimental results, the worst case uncertainty is estimated for two commonly used antennas: a dipole and planar inverted (PIFA) antenna. It is shown that worst-case uncertainty of SAR calculation is approximately 1-2 dB for dipole (or monopole) antenna and approximately 8-17 dB for PIFA antenna.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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