One of the recent challenges that arise in the study of small antennas is the bio-electromagnetic analysis of implantable and wearable devices for e-health applications. In this paper, a new on-body scenario for safely limits is discussed. An analysis of the electromagnetic interaction between a model of human body tissue and a wearable thin on-body antenna operating at 5 GHz frequency, is made. Based on specific absorption rate (SAR), the analysis of two considered scenarios, antenna in free space and antenna in the presence of biological tissue, is established. The method of moments and generalized equivalent circuit MoM-GEC are used for numerical modeling and are compared with a simulated and measured data. Results are investigated in terms of electric field, SAR, radiation pattern and directivity. The numerical data demonstrate a significant body absorption quantified by a local SAR distribution and an averaged SAR (1 g) of about 1.930 W/Kg. This effect matches with radiated power reduction of about 28.7 dBW/m\(^2\). Four metrics of radiation data are discussed: the main lobe level, the main lobe direction, the angular width and the presence of side lobes.

小型天线研究中出现的最新挑战之一是对电子医疗应用中的可植入和可穿戴设备进行生物电磁分析。在本文中，讨论了一种新的安全限制的人体场景。分析了人体组织模型与以5 GHz频率运行的可穿戴式薄型人体天线之间的电磁相互作用。基于比吸收率（SAR），建立了对两种考虑情况的分析，即自由空间中的天线和存在生物组织的情况下的天线。矩量法和广义等效电路MoM-GEC用于数值建模，并与仿真和测量数据进行比较。从电场，SAR，辐射方向图和方向性方面研究了结果。数值数据表明，通过局部SAR分布和大约1.930 W / Kg的平均SAR（1 g）可以量化人体吸收的显着性。该效果与约28.7 dBW / m的辐射功率降低相匹配\（^ 2 \）。讨论了辐射数据的四个指标：主瓣水平，主瓣方向，角宽度和旁瓣的存在。