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Influence of Flexible and Textile Substrates on Frequency-Selective Surfaces (FSS)
Olga Rac-Rumijowska1, Piotr Pokryszka1, Tomasz Rybicki2
1Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
Sensors (Basel, Switzerland)
|March 13, 2024
Summary
Flexible frequency-selective surfaces (FSS) were developed on textile and film substrates using screen printing. The study demonstrates how substrate texture impacts FSS shielding performance, achieving up to 15 dB attenuation.
Area of Science:
- Electromagnetics and Materials Science
- Focuses on the intersection of electromagnetic wave manipulation and material properties.
Background:
- Frequency-selective surfaces (FSS) are crucial for controlling electromagnetic wave transmission and reflection.
- Flexible FSS on diverse substrates are gaining importance for applications requiring adaptable electromagnetic shielding.
Purpose of the Study:
- To investigate the influence of substrate texture on the electromagnetic shielding properties of flexible frequency-selective surfaces (FSS).
- To compare the performance of FSS fabricated on textile versus film substrates using screen printing.
Main Methods:
- Fabrication of flexible FSS using silver paste screen printing on textile and film substrates with three distinct geometric patterns.
- Microscopic analysis (SEM, optical) to assess substrate coverage and pattern fidelity.
- Electromagnetic shielding performance evaluation through simulation (Comsol Multiphysics) and experimental measurement (antenna method).
Main Results:
- Achieved selective textile filters with one or two modes, exhibiting transmission attenuation of approximately 15 dB.
- Characterized pattern resistance at approximately 50 mΩ/□.
- Demonstrated a correlation between substrate type, pattern geometry, and resulting shielding properties.
Conclusions:
- The substrate's texture significantly affects the shielding performance of flexible FSS.
- Screen printing is a viable technique for fabricating flexible FSS with tunable electromagnetic properties.
- The developed flexible FSS show potential for applications requiring selective electromagnetic wave filtering.
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