Frequency selective rasorber with high temperature resistance and mechanical bearing characteristics based on double-layer metasurface regulation
It is crucial to design and implement a stealth radome in order to increase the overall stealth of weaponry. A multi-station radar network system’s effect is greatly diminished by the traditional stealth radome, which depends on the reflection of enemy radar waves in the non-incident direction to ac...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525004113 |
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| Summary: | It is crucial to design and implement a stealth radome in order to increase the overall stealth of weaponry. A multi-station radar network system’s effect is greatly diminished by the traditional stealth radome, which depends on the reflection of enemy radar waves in the non-incident direction to achieve the stealth of a single radar base station. This method is unable to produce a complete stealth effect. In this work, the frequency selective rasorber (FSR) is theoretically analyzed. Based on this, a frequency-selective surface (FSS) and a patterned resistor film (PRF) are used to design the low-frequency transmission/high-frequency absorption (T-A) structure, which is then confirmed through simulation. To better meet practical application requirements, considering thermal resistance and mechanical load-bearing performance, the integrated molding process of fiber ceramic-based sandwich structure was developed and successfully obtained the high-strength FSR structure, which achieves high-frequency wave transmittance of 15.5–15.8 GHz, low-frequency wave absorption of 5.1–12.6 GHz. After 800 °C thermal treatment, the metastructure maintained excellent transmission coefficients at passband frequencies, demonstrating remarkable stability. At the same time, it has excellent mechanical strength (flexural strength of 43.9 MPa). It provides a new and effective way to explore stealth systems using hypersonic vehicle antennas. |
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| ISSN: | 0264-1275 |