Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis
The integration of broadband functionality, polarization insensitivity, angular stability, and low-profile design in metamaterial (MM) absorbers remains a significant challenge. This study introduces a novel design approach utilizing characteristic mode (CM) analysis, enabling intuitive and efficien...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025020584 |
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| author | Junfei Gao Xiaojun Huang Qi Xue Lina Gao Yutao Ma Linyan Guo |
| author_facet | Junfei Gao Xiaojun Huang Qi Xue Lina Gao Yutao Ma Linyan Guo |
| author_sort | Junfei Gao |
| collection | DOAJ |
| description | The integration of broadband functionality, polarization insensitivity, angular stability, and low-profile design in metamaterial (MM) absorbers remains a significant challenge. This study introduces a novel design approach utilizing characteristic mode (CM) analysis, enabling intuitive and efficient optimization of frequency-selective surfaces (FSSs) at the absorber’s top layer. Four distinct FSS configurations were developed, achieving over 90 % absorption in specific bands: 8.22 – 16.79 GHz, 8.24 – 17.90 GHz, 6.35 – 19.0 GHz, and 6.22 – 21.10 GHz. Emphasis was placed on enhancing angular stability while maintaining a compact structure. The finalized absorber exhibits an ultra-wideband response spanning 6.22 – 21.10 GHz (C, X, Ku bands), with a full-width half-maximum bandwidth of 108.9 % and a minimal thickness of 0.083 λL. Fabrication and experimental validation confirmed the design’s robustness, aligning closely with numerical simulations. This work highlights the efficacy of CM analysis in guiding MM absorber design, offering a systematic framework to address multifunctional requirements. The achieved performance combining broadband absorption, polarization insensitivity, and angular stability positions the proposed absorber as a promising solution for advanced electromagnetic applications. |
| format | Article |
| id | doaj-art-eae3eae78e6649d39b24f4482ca512c7 |
| institution | OA Journals |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-eae3eae78e6649d39b24f4482ca512c72025-08-20T02:37:35ZengElsevierResults in Engineering2590-12302025-09-012710598610.1016/j.rineng.2025.105986Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysisJunfei Gao0Xiaojun Huang1Qi Xue2Lina Gao3Yutao Ma4Linyan Guo5College of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Engineering Research Center of Smart Coal Mine Advanced Communication Technology Universities of Shaanxi Province, ChinaCollege of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Engineering Research Center of Smart Coal Mine Advanced Communication Technology Universities of Shaanxi Province, China; Corresponding author.College of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Engineering Research Center of Smart Coal Mine Advanced Communication Technology Universities of Shaanxi Province, ChinaCollege of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Engineering Research Center of Smart Coal Mine Advanced Communication Technology Universities of Shaanxi Province, ChinaCollege of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Engineering Research Center of Smart Coal Mine Advanced Communication Technology Universities of Shaanxi Province, ChinaSchool of Geophysics and Information Technology, China University of Geosciences, Beijing, Beijing 100083, ChinaThe integration of broadband functionality, polarization insensitivity, angular stability, and low-profile design in metamaterial (MM) absorbers remains a significant challenge. This study introduces a novel design approach utilizing characteristic mode (CM) analysis, enabling intuitive and efficient optimization of frequency-selective surfaces (FSSs) at the absorber’s top layer. Four distinct FSS configurations were developed, achieving over 90 % absorption in specific bands: 8.22 – 16.79 GHz, 8.24 – 17.90 GHz, 6.35 – 19.0 GHz, and 6.22 – 21.10 GHz. Emphasis was placed on enhancing angular stability while maintaining a compact structure. The finalized absorber exhibits an ultra-wideband response spanning 6.22 – 21.10 GHz (C, X, Ku bands), with a full-width half-maximum bandwidth of 108.9 % and a minimal thickness of 0.083 λL. Fabrication and experimental validation confirmed the design’s robustness, aligning closely with numerical simulations. This work highlights the efficacy of CM analysis in guiding MM absorber design, offering a systematic framework to address multifunctional requirements. The achieved performance combining broadband absorption, polarization insensitivity, and angular stability positions the proposed absorber as a promising solution for advanced electromagnetic applications.http://www.sciencedirect.com/science/article/pii/S2590123025020584Metamaterial absorberBroadband absorptionPolarization insensitivityAngular stability |
| spellingShingle | Junfei Gao Xiaojun Huang Qi Xue Lina Gao Yutao Ma Linyan Guo Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis Results in Engineering Metamaterial absorber Broadband absorption Polarization insensitivity Angular stability |
| title | Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| title_full | Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| title_fullStr | Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| title_full_unstemmed | Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| title_short | Broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| title_sort | broadband metamaterial absorber with enhanced angular stability using characteristic mode analysis |
| topic | Metamaterial absorber Broadband absorption Polarization insensitivity Angular stability |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025020584 |
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