A subwavelength structural material compatible with infrared, laser and microwave low detectability

Abstract

The invention discloses a sub-wavelength structural material compatible with low detectability of infrared, laser and microwave, which comprises metal-type frequency-selective surface layer I, medium layer I, metal-type frequency-selective surface layer II, Dielectric layer II, resistive film, dielectric layer III. The metal-type frequency selective surface layer is a sub-wavelength patch array, and the metal used has the characteristic of low infrared emissivity. The present invention uses the phase difference produced by two patches of different sizes on the metal-type frequency selective surface layer I to regulate the phase, and then controls the backscattering of the incident electromagnetic wave to achieve low detectability compatible with laser and infrared, while the bottom Three layers realize the absorption of microwave. The invention overcomes the limitation that traditional wave-absorbing cladding materials only work in a single waveband, realizes compatibility with infrared, laser and microwave, and the material structure is simple and light.

Description

technical field [0001] The invention relates to the field of multifunctional new materials, in particular to a sub-wavelength structural material compatible with infrared, laser and microwave low detectability. Background technique [0002] With the rapid development of multi-spectral detection technology, the application of single-function absorbing materials can no longer meet the current needs. New absorbing materials compatible with multiple bands, especially laser, infrared and microwave, have become the development direction of research in this field. . However, there are still certain contradictions in achieving mutual compatibility of materials with low detectability in laser, infrared and microwave bands. The reason is that the microwave band requires strong absorption and low reflection of electromagnetic waves, while the infrared band requires low absorption and high reflection. Although the laser also requires strong absorption and low reflection of electromagne...

AI Technical Summary

Problems solved by technology

However, there are still some contradictions in achieving mutual compatibility of materials with low detectability in laser, infrared and microwave bands.

The reason is that the microwave band requires strong absorption and low reflection of electromagnetic waves, while the infrared band requires low absorption and high reflection. Although the laser also requires strong absorption and low reflection of electromagnetic waves, it works in the infrared band, which has a low detectability with the infrared band. contradiction

Images