The government regulates specific absorption rate (SAR) levels of mobile phones and beyond that limit, mobile phones are not available on the market. The SAR measurement for a specific anthropomorphic mannequin (SAM) phantom is performed for four different positions and all 1-g peak spatial SAR values should meet the requirement. In this work, we propose a novel approach to reduce the maximum 1-g peak spatial SAR value by balancing the SARs. This SAR balancing can be achieved by modifying ground current distributions. Numerical examples are employed to validate our approach. It is observed that the maximum 1-g peak spatial SAR value can be reduced by 40% compared to the case without modifying ground current distributions.

中文翻译：

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手机最大峰值空间SAR降低的数值研究

政府规定了手机的比吸收率 (SAR) 水平，超出该限制后，市场上将无法销售手机。特定拟人模型 (SAM) 体模的 SAR 测量在四个不同位置执行，所有 1-g 峰值空间 SAR 值应满足要求。在这项工作中，我们提出了一种通过平衡 SAR 来降低最大 1-g 峰值空间 SAR 值的新方法。这种 SAR 平衡可以通过修改接地电流分布来实现。数值例子被用来验证我们的方法。据观察，与不修改接地电流分布的情况相比，最大 1-g 峰值空间 SAR 值可以降低 40%。