Standalone Stretchable RF Systems Based on Asymmetric 3D Microstrip Antennas With on-body Wireless Communication and Energy Harvesting
Standalone Stretchable RF Systems Based on Asymmetric 3D Microstrip Antennas With on-body Wireless Communication and Energy Harvesting
复制标题
DOI：
10.1016/j.nanoen.2022.107069
复制
发表时间：
2022-02
期刊：
影响因子：
17.6
通讯作者：
Senhao Zhang;Jia Zhu;Yingying Zhang;Zhensheng Chen;Chaoyun Song;Jiuqiang Li;Ning Yi;Donghai Qiu;Kai Guo;Cheng Zhang;T. Pan;Yuan Lin;Honglei Zhou;Hao Long;Hongbo Yang;Huanyu Cheng
中科院分区：
文献类型：
--
作者：
Senhao Zhang;Jia Zhu;Yingying Zhang;Zhensheng Chen;Chaoyun Song;Jiuqiang Li;Ning Yi;Donghai Qiu;Kai Guo;Cheng Zhang;T. Pan;Yuan Lin;Honglei Zhou;Hao Long;Hongbo Yang;Huanyu Cheng
作为不可缺少的组件，可拉伸天线在无线通信和射频能量收集方面具有潜在的用途，可以为未来的可穿戴电子产品提供低姿态和集成功能。然而，应用于可拉伸天线的机械变形通常会导致其谐振频率的移动（即失谐效应），这限制了它们在应变传感方面的应用。此外，由于人体组织的损耗，可拉伸天线的对体辐射效率严重下降。在这项工作中，我们介绍了具有不同3D配置的可拉伸微带天线，以获得出色的对体辐射性能。与2D天线相比，可拉伸的3D微带天线具有应变不敏感的谐振特性，提高了可拉伸性，增强了峰值增益。特别是，可拉伸的非对称3D微带天线的优化峰值增益使其能够以几乎两倍的距离无线传输能量和数据，并从收集的射频能量中获得两倍的充电速率。更重要的是，可拉伸天线和整流天线与可拉伸传感和能量存储单元的集成可以产生一个独立的可拉伸射频系统，用于未来对人类和结构的健康监测。这项工作的结果也可以为开发具有无线传输能力的自供电单元铺平道路，用于可拉伸的身体区域网络和智能物联网。
As an indispensable component, the stretchable antenna with the potential use in wireless communication and radio frequency (RF) energy harvesting can provide future wearable electronics with a low profile and integrated functions. However, mechanical deformations applied to stretchable antennas often lead to a shift of their resonant frequency (i.e., the detuning effect), which limits their applications to strain sensing. In addition, the on-body radiation efficiency of stretchable antennas severely degrades due to lossy human tissues. In this work, we introduce stretchable microstrip antennas with varying 3D configurations for excellent on-body radiation performance. Compared to their 2D counterpart, the stretchable 3D microstrip antennas showcase a strain-insensitive resonance, improved stretchability, and enhanced peak gain. In particular, the optimized peak gain from the stretchable asymmetric 3D microstrip antenna allows it to wirelessly transmit the energy and data at an almost doubled distance, as well as a doubled charging rate from the harvested RF energy. More importantly, the integration of stretchable antenna and rectenna with stretchable sensing and energy storage units can yield a standalone stretchable RF system for future health monitoring of humans and structures. The results from this work can also pave the way for the development of self-powered units with wireless transmission capabilities for stretchable body area networks and smart internet-of-things.