Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding
Abstract This paper presents an ultra-wideband (UWB) frequency selective surface (FSS) that is conformal, low-profile, single-layered, and miniaturized. The designed simple modified star swastika (MSS) arms offer a wide bandwidth of 7.5 GHz with transmission nulls ranging from 3.1 to 10.6 GHz. The 0...
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Nature Portfolio
2025-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-92421-x |
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| author | Malathi Kanagasabai Lavanya Viswanathan M. Gulam Nabi Alsath Sandeep Kumar Palaniswamy Sachin Kumar Santhya Premdharshini Premkumar Hyun Chul Choi Kang Wook Kim |
| author_facet | Malathi Kanagasabai Lavanya Viswanathan M. Gulam Nabi Alsath Sandeep Kumar Palaniswamy Sachin Kumar Santhya Premdharshini Premkumar Hyun Chul Choi Kang Wook Kim |
| author_sort | Malathi Kanagasabai |
| collection | DOAJ |
| description | Abstract This paper presents an ultra-wideband (UWB) frequency selective surface (FSS) that is conformal, low-profile, single-layered, and miniaturized. The designed simple modified star swastika (MSS) arms offer a wide bandwidth of 7.5 GHz with transmission nulls ranging from 3.1 to 10.6 GHz. The 0.0008λ 0 thin MSS FSS unit cells form a periodic pattern with a physical form factor of 0.041λ 0 and 61% miniaturization. The proposed FSS has a -10 dB fractional bandwidth of 109.48% and a peak shielding of 67.9 dB at 7.1 GHz. The designed FSS has a figure of merit (FoM) of 10.25 (λ 0/U), where U represents the unit cell size of the FSS. In both transverse electric (TE) and transverse magnetic (TM) modes, incoming waves can be stable with incidence angles (θ) up to 75º and less than 1% frequency deviation. To gain a physical understanding of the FSS unit cell, an equivalent circuit model (ECM) analysis is conducted. The FSS prototype has been built, and the measured results are validated with simulated results. Hence, the proposed MSS FSS could be a promising solution for wideband shielding. |
| format | Article |
| id | doaj-art-6fbdd3ec5161440996c6d2d00cf77fad |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-6fbdd3ec5161440996c6d2d00cf77fad2025-08-20T01:56:06ZengNature PortfolioScientific Reports2045-23222025-04-0115111310.1038/s41598-025-92421-xLow-profile conformal single-sided miniaturized frequency selective surface for wideband shieldingMalathi Kanagasabai0Lavanya Viswanathan1M. Gulam Nabi Alsath2Sandeep Kumar Palaniswamy3Sachin Kumar4Santhya Premdharshini Premkumar5Hyun Chul Choi6Kang Wook Kim7Department of Electronics and Communication Engineering, College of Engineering, Guindy, Anna UniversityDepartment of Electronics and Communication Engineering, College of Engineering, Guindy, Anna UniversityDepartment of Electronics and Communication Engineering, College of Engineering, Guindy, Anna UniversityDepartment of Electronics and Communication Engineering, Faculty of Engineering and Technology, SRM Institute of Science and TechnologyDepartment of Electronics and Communication Engineering, Galgotias College of Engineering and TechnologyDepartment of Electronics and Communication Engineering, College of Engineering, Guindy, Anna UniversitySchool of Electronic and Electrical Engineering, Kyungpook National UniversitySchool of Electronic and Electrical Engineering, Kyungpook National UniversityAbstract This paper presents an ultra-wideband (UWB) frequency selective surface (FSS) that is conformal, low-profile, single-layered, and miniaturized. The designed simple modified star swastika (MSS) arms offer a wide bandwidth of 7.5 GHz with transmission nulls ranging from 3.1 to 10.6 GHz. The 0.0008λ 0 thin MSS FSS unit cells form a periodic pattern with a physical form factor of 0.041λ 0 and 61% miniaturization. The proposed FSS has a -10 dB fractional bandwidth of 109.48% and a peak shielding of 67.9 dB at 7.1 GHz. The designed FSS has a figure of merit (FoM) of 10.25 (λ 0/U), where U represents the unit cell size of the FSS. In both transverse electric (TE) and transverse magnetic (TM) modes, incoming waves can be stable with incidence angles (θ) up to 75º and less than 1% frequency deviation. To gain a physical understanding of the FSS unit cell, an equivalent circuit model (ECM) analysis is conducted. The FSS prototype has been built, and the measured results are validated with simulated results. Hence, the proposed MSS FSS could be a promising solution for wideband shielding.https://doi.org/10.1038/s41598-025-92421-x |
| spellingShingle | Malathi Kanagasabai Lavanya Viswanathan M. Gulam Nabi Alsath Sandeep Kumar Palaniswamy Sachin Kumar Santhya Premdharshini Premkumar Hyun Chul Choi Kang Wook Kim Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding Scientific Reports |
| title | Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding |
| title_full | Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding |
| title_fullStr | Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding |
| title_full_unstemmed | Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding |
| title_short | Low-profile conformal single-sided miniaturized frequency selective surface for wideband shielding |
| title_sort | low profile conformal single sided miniaturized frequency selective surface for wideband shielding |
| url | https://doi.org/10.1038/s41598-025-92421-x |
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