研究目的
To design and study a new hybrid metasurface (HMS) for infrared-multiband radar stealth-compatible materials that can simultaneously achieve multiband microwave absorption and low IR emission.
研究成果
The designed HMS successfully achieves infrared stealth and multiband microwave absorption simultaneously. It demonstrates five strong absorption peaks in the microwave band and low emissivity in the infrared band, confirming its potential for multispectral stealth technology applications.
研究不足
The study focuses on the design and initial testing of the HMS. The practical application and durability under various environmental conditions were not extensively explored. The mutual coupling between layers and the slight frequency shift in experimental results compared to simulations indicate areas for further optimization.
1：Experimental Design and Method Selection:
The HMS is constructed by stacking a multiband radar absorber and an infrared shielding structure. The design involves two specifically designed metasurface layers to control infrared emission and microwave absorption.
2：Sample Selection and Data Sources:
The samples were fabricated using the printed circuit board technique, with a 380 mm×380 mm sample size. The metal is a copper film, and the dielectric materials are F4B and FR4 boards.
3：List of Experimental Equipment and Materials:
Agilent 8720ET vector network analyzer for microwave reflection measurements, Vertex 80 for infrared reflection spectra measurements, copper film, F4B and FR4 dielectric boards.
4：Experimental Procedures and Operational Workflow:
The reflection properties were measured with the free space reflection method in a microwave anechoic chamber. The infrared emissivity was calculated from the measured reflection rate.
5：Data Analysis Methods:
The absorption spectra and infrared emissivity were analyzed to evaluate the stealth performance of the HMS.
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