Abstract
The Finite Integration Algorithm (FIA) is used for the analysis of monopole and Radiation-Coupled Dual-L (RCDLA) antennas for personal communications at the GSM frequency of 900 MHz. It is found that 44% of the power delivered to the monopole is absorbed by the user, compared to only 20% for the RCDLA. The maximal local Specific Absorbtion Rate SAR inside the head for a transmitted power of 1 W for the monopole and RCDLA is 2 mW/cm 3 and 0.9 mW/cm 3 respectively. It is also found that the RCDLA has a bandwidth of only 30 MHz, and that the user's hand has a strong influence on its resonant frequency. The monopole, on the other hand has a large bandwidth, and its impedance is not so sensitive to the presence of the user.
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