Human exposure to electromagnetic fields produced by two wearable antennas operating in the 2.4 GHz frequency band was assessed by computational tools. Both antennas were designed to be attached to the skin, but they were intended for different applications. The first antenna was designed for off-body applications, i.e. to communicate with a device placed outside the body, while the second antenna model was optimized to communicate with a device located inside the body. The power absorption in human tissues was determined at several locations of adult male and female body models. The maximum specific absorption rate (SAR) value obtained with the off-body antenna was found on the torso of the woman model and was equal to 0.037 W/kg at 2.45 GHz. SAR levels increased significantly for the antenna transmitting inside the body. In this case, SAR values ranged between 0.23 and 0.45 W/kg at the same body location. The power absorbed in different body tissues and total power absorbed in the body were also calculated; the maximum total power absorbed was equal to 5.2 mW for an antenna input power equal to 10 mW. Bioelectromagnetics. 2020;41:73-79 © 2019 Wiley Periodicals, Inc.

中文翻译：

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由于2.4 GHz频带中的可穿戴天线，人体中的RF能量吸收。

通过计算工具评估了人体在两个工作于2.4 GHz频带的可穿戴天线产生的电磁场中的暴露情况。两种天线均设计为可附着在皮肤上，但它们旨在用于不同的应用。第一个天线设计用于体外应用，即与放置在体外的设备进行通信，而第二个天线模型经过优化，可以与放置在体内的设备进行通信。在成年男性和女性人体模型的多个位置确定了人体组织中的功率吸收。在女性模型的躯干上发现了使用体外天线获得的最大比吸收率（SAR）值，在2.45 GHz时等于0.037 W / kg。天线在体内传输的SAR值显着增加。在这种情况下，在相同的身体位置，SAR值介于0.23和0.45 W / kg之间。还计算了在不同身体组织中吸收的功率和在体内吸收的总功率；对于等于10 mW的天线输入功率，吸收的最大总功率等于5.2 mW。生物电磁学。2020; 41：73-79©2019 Wiley Periodicals，Inc.