Rac-Rumijowska Olga, Pokryszka Piotr, Rybicki Tomasz, Suchorska-Woźniak Patrycja, Woźniak Maksymilian, Kaczkowska Katarzyna, Karbownik Iwona
Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
Faculty of Electrical, Electronic, Computer and Control Engineering, Technical University of Łódź, Żeromskiego 116, 90-924 Łódź, Poland.
Sensors (Basel). 2024 Mar 6;24(5):1704. doi: 10.3390/s24051704.
Frequency-selective surfaces (FSS) are two-dimensional geometric structures made of conductive materials that selectively transmit or reflect electromagnetic waves. In this paper, flexible FSS made on textile and film substrates is presented and compared to show the effect of the texture associated with the type of substrate on the shielding properties. Three geometries of patterns of squares in the border, inversion of squares in the border, and circles with a border were used, and the patterns were made by the silver paste screen printing technique. Microscopic analysis (SEM and optical) was performed to determine the degree of substrate coverage and the actual geometry of the pattern. The resistance per square of the obtained patterns was about 50 mΩ/□. The shielding properties of FSS were simulated in Comsol Multiphysics 6.2 software and then measured by the antenna method. Selective textile filters were obtained, depending on the pattern used, with one or two modals with a transmission attenuation of about 15 dB. The paper analyzes the effect of the substrate and the screen printing technique used on the shielding properties of the flexible FSS.
频率选择表面（FSS）是由导电材料制成的二维几何结构，可选择性地传输或反射电磁波。本文展示并比较了在纺织品和薄膜基板上制作的柔性FSS，以说明与基板类型相关的纹理对屏蔽性能的影响。使用了三种图案几何形状：边框为正方形、边框正方形倒置以及带边框的圆形，这些图案通过银浆丝网印刷技术制作而成。进行了微观分析（扫描电子显微镜和光学显微镜）以确定基板覆盖程度和图案的实际几何形状。所获得图案的方阻约为50 mΩ/□。在Comsol Multiphysics 6.2软件中对FSS的屏蔽性能进行了模拟，然后通过天线法进行测量。根据所使用的图案，获得了选择性纺织滤波器，具有一个或两个模态，传输衰减约为15 dB。本文分析了基板和所使用的丝网印刷技术对柔性FSS屏蔽性能的影响。
