Department of Electrical and Computer Engineering, West Pomeranian University of Technology, Szczecin, ul. Sikorskigo 37, 70-313 Szczecin, Poland.
Sensors (Basel). 2019 Sep 15;19(18):3989. doi: 10.3390/s19183989.
In this paper miniaturization of a microstrip patch strain sensor (MPSS) using fractal geometry was proposed and analyzed. For this purpose, the transducer of Sierpinski curve geometry was utilized and compared with the most commonly utilized rectangular resonator-based one. Both sensors were designed for the same resonant frequency value (2.725 GHz). This fact allows analysis of the influence of the patch (resonator) shape and size on the resonant frequency shift. This is very important as the sensors with the same resonator shape but designed on various operating frequencies have various resonant frequency shifts. Simulation and experimental analysis for all sensors were carried out. A good convergence between results of simulation and measurements was achieved. The obtained results proved the possibility of microstrip strain sensor dimensions reduction using Sierpinski curve fractal geometry. Additionally, an influence of microstrip line deformation for proposed sensors was studied.
本文提出并分析了利用分形几何实现微带贴片应变传感器（MPSS）的小型化。为此，利用了分形 Sierpinski 曲线几何的换能器，并将其与最常用的基于矩形谐振器的换能器进行了比较。两个传感器的设计都基于相同的谐振频率值（2.725 GHz）。这一事实允许分析贴片（谐振器）形状和尺寸对谐振频率偏移的影响。这一点非常重要，因为具有相同谐振器形状但设计在不同工作频率下的传感器具有不同的谐振频率偏移。对所有传感器进行了仿真和实验分析。仿真和测量结果之间达到了很好的收敛。所得到的结果证明了使用分形 Sierpinski 曲线几何实现微带应变传感器尺寸缩小的可能性。此外，还研究了所提出的传感器对微带线变形的影响。
