Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface
In this paper, a low-profile, double-layer absorber with ultra-broadband absorption and large-angle stability is proposed. In order to improve the angular stability, the square ring with concave–convex deformation is designed. It can expand the current path to realize the miniaturization of the abso...
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MDPI AG
2022-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/18/6452 |
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| author | Shan Zhao Wenyu Li Zengrui Li Hou Shu Kainan Qi Hongcheng Yin |
| author_facet | Shan Zhao Wenyu Li Zengrui Li Hou Shu Kainan Qi Hongcheng Yin |
| author_sort | Shan Zhao |
| collection | DOAJ |
| description | In this paper, a low-profile, double-layer absorber with ultra-broadband absorption and large-angle stability is proposed. In order to improve the angular stability, the square ring with concave–convex deformation is designed. It can expand the current path to realize the miniaturization of the absorber, which decreases the influence of oblique incident on absorption. The equivalent circuit model provides detailed resonance and admittance analysis, showing the existence of three resonances working together to achieve broadband absorption. The simulated results illustrate that the designed unit can achieve above 80% absorption within 2.09–18.1 GHz. The angular stability is up to 50° under TE/TM polarization with a period of 0.07 λ<sub>L</sub> (the wavelength of the lowest operating frequency). The 300 mm × 300 mm prototype absorbers were fabricated for demonstration, with a total thickness of 0.096 λ<sub>L</sub>. The measurement results are consistent with the simulated results, which shows that the designed absorber unit can achieve ultra-broadband and large-angle absorption. The performance of devices can be widely applied in infrared detection, radiation refrigeration, and stealth technology. |
| first_indexed | 2024-03-09T23:17:59Z |
| format | Article |
| id | doaj.art-d9d7a0abcf6a4845ad3264d8f1fa612e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:17:59Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-d9d7a0abcf6a4845ad3264d8f1fa612e2023-11-23T17:33:52ZengMDPI AGMaterials1996-19442022-09-011518645210.3390/ma15186452Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective SurfaceShan Zhao0Wenyu Li1Zengrui Li2Hou Shu3Kainan Qi4Hongcheng Yin5School of New Media, Beijing Institute of Graphic Communication, Beijing 102600, ChinaState Key Laboratory of Media Convergence and Communication, School of Information and Communication Engineering, Communication University of China, Beijing 100024, ChinaState Key Laboratory of Media Convergence and Communication, School of Information and Communication Engineering, Communication University of China, Beijing 100024, ChinaSchool of New Media, Beijing Institute of Graphic Communication, Beijing 102600, ChinaThe Science and Technology on Electromagnetic Scattering Laboratory, China Aerospace Science and Technology Corporation, Beijing 100854, ChinaThe Science and Technology on Electromagnetic Scattering Laboratory, China Aerospace Science and Technology Corporation, Beijing 100854, ChinaIn this paper, a low-profile, double-layer absorber with ultra-broadband absorption and large-angle stability is proposed. In order to improve the angular stability, the square ring with concave–convex deformation is designed. It can expand the current path to realize the miniaturization of the absorber, which decreases the influence of oblique incident on absorption. The equivalent circuit model provides detailed resonance and admittance analysis, showing the existence of three resonances working together to achieve broadband absorption. The simulated results illustrate that the designed unit can achieve above 80% absorption within 2.09–18.1 GHz. The angular stability is up to 50° under TE/TM polarization with a period of 0.07 λ<sub>L</sub> (the wavelength of the lowest operating frequency). The 300 mm × 300 mm prototype absorbers were fabricated for demonstration, with a total thickness of 0.096 λ<sub>L</sub>. The measurement results are consistent with the simulated results, which shows that the designed absorber unit can achieve ultra-broadband and large-angle absorption. The performance of devices can be widely applied in infrared detection, radiation refrigeration, and stealth technology.https://www.mdpi.com/1996-1944/15/18/6452ultra-broadbandlarge angular stabilityabsorberfrequency selective surfacestealth technology |
| spellingShingle | Shan Zhao Wenyu Li Zengrui Li Hou Shu Kainan Qi Hongcheng Yin Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface Materials ultra-broadband large angular stability absorber frequency selective surface stealth technology |
| title | Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface |
| title_full | Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface |
| title_fullStr | Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface |
| title_full_unstemmed | Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface |
| title_short | Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface |
| title_sort | ultra broadband absorber with large angular stability based on frequency selective surface |
| topic | ultra-broadband large angular stability absorber frequency selective surface stealth technology |
| url | https://www.mdpi.com/1996-1944/15/18/6452 |
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