Gan Fengyuan, Shang Xiangshuo, Yang Xuelei, Li Shuo, Zhou Yi, Li Wei
School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
Sensors (Basel). 2024 Aug 29;24(17):5615. doi: 10.3390/s24175615.
The research on MEMS wireless sensing technology adapted to strong power frequency electromagnetic field environments is of great significance to our energy security, economic society, and even national security. Here, we propose a subwavelength cross-meandering resonator (0.49 × 0.49) to simultaneously achieve power frequency electromagnetic field shielding and wireless communication signal transmission. The element size of the resonator is only /11, which is much smaller than that of previous works. In the resonator, a resonance mode with the significant near-field enhancement effect (about 180 times that at = 1 GHz) is supported. Based on the self-made shielding box experimental setup, the measured shielding effectiveness of the resonator sample can reach more than 33 dB. Moreover, by integrating the cross-meandering resonator with the MEMS sensor, a wireless communication signal can be successfully transmitted. A dual-function cross-meandering resonator integrated with sensors may find potential applications in many military and civilian industries associated with strong power frequency electromagnetic fields.
针对强工频电磁场环境的微机电系统（MEMS）无线传感技术研究，对我们的能源安全、经济社会乃至国家安全都具有重大意义。在此，我们提出一种亚波长交叉曲折谐振器（0.49×0.49），以同时实现工频电磁场屏蔽和无线通信信号传输。该谐振器的元件尺寸仅为λ/11，远小于先前工作中的尺寸。在该谐振器中，支持一种具有显著近场增强效应的谐振模式（约为1 GHz时的180倍）。基于自制屏蔽箱实验装置，测得的谐振器样品屏蔽效能可达33 dB以上。此外，通过将交叉曲折谐振器与MEMS传感器集成，可成功传输无线通信信号。集成传感器的多功能交叉曲折谐振器可能在许多与强工频电磁场相关的军事和民用行业中找到潜在应用。
