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<p>In this work, a single-layer miniaturized wideband frequency-selective surface (FSS) was designed and fabricated using the 3D printing method. The printed FSS was created utilizing a FLASHFORGE Dreamer 3D printer. The single-layer design uses polylactic acid (PLA) as a dielectric material, with thickness of 1.6&#xa0;mm and a unit cell size of 5 × 5 mm<sup>2</sup>. While permitting the transmission of electromagnetic waves at other frequencies, the FSS demonstrates better shielding in the X-band, with loss of −55&#xa0;dB at a centre frequency of 10&#xa0;GHz. The unit cell of the proposed FSS, which has a compact size of 0.167 λ<sub>0</sub> × 0.167 λ<sub>0</sub>, is composed of a modified square loop with cross elements. It provides a bandwidth of 4&#xa0;GHz and frequency from 8&#xa0;GHz to 12&#xa0;GHz, with angular- and polarization-independent operation. CST Microwave Studio Suite was used for the simulation, and results were obtained. Two methods were used to fabricate the designed FSS: traditional etching and inkjet printing. Finally, the measurement of the fabricated structure was carried out using a vector network analyser.</p>

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A Novel Miniaturized Wideband Frequency-Selective Surface for Shielding Applications

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • J. Inbarani,
  • E. Manikandan,
  • G. Idayachandran

摘要

In this work, a single-layer miniaturized wideband frequency-selective surface (FSS) was designed and fabricated using the 3D printing method. The printed FSS was created utilizing a FLASHFORGE Dreamer 3D printer. The single-layer design uses polylactic acid (PLA) as a dielectric material, with thickness of 1.6 mm and a unit cell size of 5 × 5 mm2. While permitting the transmission of electromagnetic waves at other frequencies, the FSS demonstrates better shielding in the X-band, with loss of −55 dB at a centre frequency of 10 GHz. The unit cell of the proposed FSS, which has a compact size of 0.167 λ0 × 0.167 λ0, is composed of a modified square loop with cross elements. It provides a bandwidth of 4 GHz and frequency from 8 GHz to 12 GHz, with angular- and polarization-independent operation. CST Microwave Studio Suite was used for the simulation, and results were obtained. Two methods were used to fabricate the designed FSS: traditional etching and inkjet printing. Finally, the measurement of the fabricated structure was carried out using a vector network analyser.