This article describes the implementation of a wireless human motion detection with interference resistance to untargeted deformations based on a stretchable patch antenna with fractal design. By rationally incorporating the Hilbert fractal pattern in the conductive patch and ground plane, the patch antenna shows a mechanical stretchability of ∼40% and a maximum gain of 2.95 dB at 2.5 GHz. Furthermore, the influence of the fractal order on the mechanical stretchability and radiation properties of the stretchable patch antenna is discussed. The resonant frequency of the stretchable fractal antenna demonstrates highly selective sensitivity to different deformations; i.e., it remains almost unchanged with bending deformations and is linearly dependent on the tensile strain. Remote detection of joint motions is experimentally verified by a wireless on-body strain sensor based on the fractal design-based stretchable microstrip antenna.

中文翻译：

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具有分形设计的可贴附皮肤和可拉伸贴片天线，用于远程体感运动

本文描述了基于具有分形设计的可拉伸贴片天线的无线人体运动检测的实现，该检测具有抗非目标变形的干扰。通过在导电贴片和接地平面中合理地结合希尔伯特分形图案，贴片天线在 2.5 GHz 时显示出约 40% 的机械拉伸性和 2.95 dB 的最大增益。此外，还讨论了分形阶数对可拉伸贴片天线的机械拉伸性和辐射特性的影响。可伸缩分形天线的共振频率对不同变形表现出高度选择性敏感性；也就是说，它在弯曲变形时几乎保持不变，并且与拉伸应变呈线性关系。