An ultra-wide absorption band energy selective surface

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By designing an ultra-wide absorption band energy selective surface and adopting an adaptively adjustable energy selective layer and absorption layer, the problems of large reflection coefficient and poor stealth performance of existing energy selective surfaces have been solved, achieving efficient electromagnetic wave absorption and protection, and improving electromagnetic stealth performance and protection frequency band.

CN224304902UActive Publication Date: 2026-05-29CHINA WEST NORMAL UNIVERSITY

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: CHINA WEST NORMAL UNIVERSITY
Filing Date: 2025-04-22
Publication Date: 2026-05-29

AI Technical Summary

Technical Problem

Existing energy selective surfaces have a large reflection coefficient when high-power electromagnetic waves are incident, which increases the radar cross section and reduces electromagnetic stealth performance. Furthermore, existing protection measures are limited in their effectiveness in balancing inter-band interference and high-power electromagnetic pulse protection.

Method used

An ultrawide absorption band energy selective surface is designed, comprising an energy absorption layer and an energy selection layer. By adjusting the state of the diode and the resistance distribution, adaptive adjustment is achieved, enabling low-loss transmission of low-power electromagnetic waves and absorption of high-power electromagnetic waves. Combined with an air layer to optimize impedance matching, reflection loss is reduced.

Benefits of technology

It achieves ultra-wide shielding and absorption when high-power electromagnetic waves are incident, and low-loss transmission when low-power electromagnetic waves are incident, thus improving electromagnetic stealth performance and anti-interference capability, expanding the protection frequency band, and reducing reflection loss.

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Abstract

The utility model discloses a kind of ultra-wide absorption band energy selection surfaces, it is related to electromagnetic metasurface technical field, including energy absorption layer and energy selection layer, energy absorption layer is set in the top of energy selection layer, energy absorption layer includes wave-absorbing layer and first dielectric layer, wave-absorbing layer is set in the upper surface of first dielectric layer, energy selection layer includes first energy selection layer, second dielectric layer and second energy selection layer, second dielectric layer is set between first energy selection layer and second energy selection layer, according to the power intensity of incident electromagnetic wave adaptive adjustment operating state, ultra-wide band absorption and adaptive protection to electromagnetic wave;When high-power electromagnetic wave is incident, it can realize ultra-wide shielding band and absorption band;When low-power electromagnetic wave is incident, then show the passband characteristic of low insertion loss, while maintaining ultra-wide band absorption capacity, to realize electromagnetic protection and electromagnetic stealth function, effectively improve the anti-interference ability and stealth performance of equipment.

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