3D Kirigami antennas with robust frequency for stretchable wireless communication
3D Kirigami antennas with robust frequency for stretchable wireless communication
复制标题
具有强大频率的 3D Kirigami 天线，可实现可拉伸的无线通信
DOI：
10.1016/j.eml.2022.101841
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发表时间：
2022-07
影响因子：
4.7
通讯作者：
Xue Feng
中科院分区：
文献类型：
--
作者：
Zhijian Wang;Hairui Wang;Fei Liu;Yu Kang;Ying Chen;Xue Feng
天线是无线信号通信中必不可少的电子元器件，为了保证其稳定的工作频率，需要有一个固定的电气尺寸。然而，现有的柔性天线的频率随着其变形的变化而变化，从而导致数据包丢失甚至传输失败。因此，现有的柔性天线的固定尺寸与柔性基板的变形严重不一致。在这里，我们提出了一种策略，设计和制造可拉伸天线与强大的频率的基础上，三维（3D）Kirigami，这是轻量级的和变形不敏感。通过Kirigami设计和3D风格的组装，天线的辐射元件大部分与软基板分离和应变隔离。因此，在风扰实验中，无论是弯曲、拉伸和压缩，还是随机的动态扰动，都使天线的谐振频率偏离设计频率很小，与以往报道的可伸缩天线相比，它具有上级的应变不敏感性。通过力学导向设计，天线在疲劳试验中经过5000次弯曲变形后性能稳定。此外，一个全方位的可伸缩和完全集成的设备功能的蓝牙无线通信的3D Kirigami天线（2.45 GHz）已被设计和制造。结果表明，基于3D Kirigami天线的可伸缩天线策略对可穿戴电子设备的无线传输具有鲁棒性。
Antenna, which is the essential electric component for wireless signal communication, requires one fixed electrical size for the stable working frequency. However, the frequency of the existing flexible antenna varies with its changing deformation, which leads to the loss of data packet or even transmission failure. Hence the fixed size of the existing flexible antenna is severely inconsistent with the deformation of flexible substrate. Here we propose a strategy to design and fabricate stretchable antennas with robust frequency based on three dimensional (3D) Kirigami, which is lightweight and deformation insensitive. With Kirigami design and assembling in 3D style, the radiation element of the antenna is mostly detached and strain-isolated from the soft substrate. Thus, not only bending, stretching and, compressing, but also the random dynamic disturbance deviates the resonant frequency little from the designed frequency in the wind disturbing experiments, as shown in the wind experiments It exhibits a superior strain insensitivity compared with the stretchable antennas ever reported. With mechanics guided design, the antenna’s property remains stable after 5000 cycles bending deformation in the fatigue tests. Besides, an omnidirectionally stretchable and fully integrated device featured Bluetooth wireless communication enabled by 3D Kirigami antenna (2.45 GHz) has been designed and fabricated. Results show that the stretchable antenna strategy based on 3D Kirigami antenna is robust for wearable electronics’ wireless transmission.
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