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Folded‐loop antennas for mobile handsets are analyzed, taking into account the influence of the human body. Folding the loop antennas toward the back of a metallic box is found to reduce the peak SAR averaged over 1 g and 10 g of tissues by 30% to 60%, while the radiation characteristics are comparable with those of a monopole antenna.
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Adachi et al. (2003) studied this question.
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