Researchers are looking for new methods to integrate sensing capabilities into textiles while maintaining the durability, flexibility, and comfort of the garment. One method for imparting sensing capabilities into garments is through coupling conductive yarns with the radio frequency identification (RFID) technology. These smart devices have exhibited promising results for short-term use. However, long-term studies of their performance are still needed to evaluate their performance over a longer period. Like all garments, wearable sensors are susceptible to environmental factors during use. These factors can lead to dielectric coupling and corrosion of conductive yarns, which has the potential to degrade the performance of the device. This letter analyzes the effect of sweat and moisture on silver-coated nylon yarn by extracting the sheet resistance at 913 MHz from transmission line measurements. HFSS simulation shows the level of perturbation in antenna performance as sheet resistance increased with each cycle of sweat-immersion, washing, and drying.

中文翻译：

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可穿戴天线设计中汗液对针织导电纱线薄层电阻的影响

研究人员正在寻找新方法将传感功能集成到纺织品中，同时保持服装的耐用性、灵活性和舒适性。将传感能力赋予服装的一种方法是通过将导电纱线与射频识别 (RFID) 技术相结合。这些智能设备在短期使用方面表现出可喜的成果。但是，仍需要对其性能进行长期研究，以评估其在较长时期内的性能。与所有服装一样，可穿戴传感器在使用过程中容易受到环境因素的影响。这些因素会导致导电纱线的介电耦合和腐蚀，从而有可能降低设备的性能。这封信通过从传输线测量中提取 913 MHz 下的薄层电阻来分析汗水和湿气对镀银尼龙纱线的影响。HFSS 模拟显示了天线性能的扰动水平，因为随着汗液浸泡、洗涤和干燥的每个循环，薄膜电阻增加。