Radar shielding experiments by composite bilayer magnetic systems
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909492677967872 |
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| author | la Rosa, Jaume Calvo-de López-Sánchez, Jesús Hernàndez, Joan Manel Marín, Pilar Tejada, Javier |
| author_facet | la Rosa, Jaume Calvo-de López-Sánchez, Jesús Hernàndez, Joan Manel Marín, Pilar Tejada, Javier |
| contents | An experimental strong increase of the reflection loss (from 25 up to 35 dBs) and an extension of the absorption bandwidth up to 20% is measured in a set of novel functional bilayer systems. We focus our work on studying the samples in an anechoic chamber under far-field real radar conditions. Each layer consists of a composite material, typically a dielectric matrix filled with random anisotropy hexaferrite and soft metallic materials (powder or wires). Combining the two types of materials into a submillimetric bilayer structure has shown unprecedented improvements in microwave absorption capacities compared to the former absorption of each layer. The capacity to improve the shielding behavior is strongly related to each layer permittivity, permeability, and thickness leading, therefore, to a strong control over the design of novel materials for stealth applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_00604 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radar shielding experiments by composite bilayer magnetic systems la Rosa, Jaume Calvo-de López-Sánchez, Jesús Hernàndez, Joan Manel Marín, Pilar Tejada, Javier Materials Science Applied Physics An experimental strong increase of the reflection loss (from 25 up to 35 dBs) and an extension of the absorption bandwidth up to 20% is measured in a set of novel functional bilayer systems. We focus our work on studying the samples in an anechoic chamber under far-field real radar conditions. Each layer consists of a composite material, typically a dielectric matrix filled with random anisotropy hexaferrite and soft metallic materials (powder or wires). Combining the two types of materials into a submillimetric bilayer structure has shown unprecedented improvements in microwave absorption capacities compared to the former absorption of each layer. The capacity to improve the shielding behavior is strongly related to each layer permittivity, permeability, and thickness leading, therefore, to a strong control over the design of novel materials for stealth applications. |
| title | Radar shielding experiments by composite bilayer magnetic systems |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2408.00604 |