P-band three-dimensional broadband composite wave-absorbing metamaterial and preparation method thereof

A broadband and P-band technology is applied in the field of P-band three-dimensional broadband composite absorbing metamaterial and its preparation, which can solve the problems of undocumented absorbing effect and high energy consumption of absorbing materials, and is beneficial to engineering applications, The effect of good absorption effect and easy wave absorption performance
CN113140913AActive Publication Date: 2021-07-20湖南工商大学
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南工商大学
Publication Date
2021-07-20

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Abstract

The invention discloses a P-band three-dimensional broadband composite wave-absorbing metamaterial and a preparation method thereof. The P-band three-dimensional broadband composite wave-absorbing metamaterial is formed by vertically arranging structural units of a metal type electromagnetic metamaterial based on magnetic metal on a ferrite dielectric substrate; a structural unit of the metal type electromagnetic metamaterial is formed by arranging two metal rings of different sizes on the front face and the back face of an FR4 dielectric substrate. The invention also comprises a preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial. The P-band three-dimensional broadband composite wave-absorbing metamaterial is simple in structure, the overall thickness is smaller than 20 mm, the production cost is low, the metamaterial has good P-band broadband radar absorption performance in different polarization directions under the condition of vertical incidence of electromagnetic waves, the reflection loss in the full band of the P-band (230-1000 MHz) is all superior to-10 dB, the peak reflection loss can reach-45.05 dB. The preparation method is easy and convenient to operate, modular assembly is easy, and engineering application is facilitated.
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Description

technical field

[0001] The invention relates to a wave-absorbing metamaterial and a preparation method thereof, in particular to a P-band three-dimensional broadband composite wave-absorbing metamaterial and a preparation method thereof. Background technique

[0002] Absorbing materials can effectively absorb and deplete incident electromagnetic wave energy, and are widely used in the fields of military radar stealth and civilian electromagnetic compatibility. The frequency of the P-band electromagnetic wave is between 0.3-1GHz, and the wavelength spans the scale of meters and decimeters. It is the main working frequency band of long-range early warning radars, but its long wavelength has great impact on the structure of absorbing materials, thickness control and electromagnetic parameter setting. severe challenge. Reducing the detectability of ultra-low frequency and long wavelength radars to weapons and equipment, and developing advanced and efficient P-band radar absorbi...

Claims

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