Arbitrary polarization three-dimensional broadband wave absorber and preparation method thereof

Abstract

The invention discloses an arbitrarily polarized three-dimensional broadband wave absorber and a preparation method thereof, the arbitrarily polarized three-dimensional broadband wave absorber comprises four groups of wave absorbers, one end of any one group of wave absorbers in the four groups of wave absorbers faces one side of the adjacent group of wave absorbers, and the other end of any one group of wave absorbers faces the other side of the adjacent group of wave absorbers. One side of each wave absorbing body faces one end of the other wave absorbing body adjacent to the other wave absorbing body; the wave absorbing body at least comprises a wave absorbing part, and the wave absorbing part comprises a first dielectric layer, a first resistive film layer, a second dielectric layer, a second resistive film layer, a third dielectric layer and a third resistive film layer. According to the invention, through the wave-absorbing part with multiple rotational symmetry, after electromagnetic waves are incident to the wave-absorbing part, multiple reflections can occur between the first dielectric layer and the second dielectric layer and between the second dielectric layer and the third dielectric layer, so that the acting times of the electromagnetic waves and the wave-absorbing part are increased, and the wave-absorbing effect is effectively improved; and stable absorption of electromagnetic waves can be realized under any polarization condition, the absorption effect of a low-frequency band is ensured, and the wave absorption performance is good.

Description

technical field [0001] The invention relates to the field of wave-absorbing materials, in particular to a three-dimensional broadband wave-absorbing body with arbitrary polarization and a preparation method thereof. Background technique [0002] With the development of modern technology, electronic equipment has been widely used in various fields in daily life, and these electronic equipment will radiate electromagnetic waves into the environment when used, causing environmental pollution. At present, the absorption of electromagnetic waves radiated by electronic equipment is carried out through electromagnetic wave absorbing materials. Therefore, the role of electromagnetic wave absorbing materials in civilian applications such as information dissemination, electronic devices, and microwave radiation protection is becoming more and more important. The demand for broadband absorbing materials is becoming more and more urgent. [0003] At present, there are three main ways t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a three-dimensional broadband absorber with arbitrary polarization and its preparation method, and solve the problem of poor absorbing effect of absorbing materials on low-frequency electromagnetic waves in the prior art. The problem of poor wave performance

Images