Ultra-compact metamaterial wave-absorbing unit

Abstract

The invention discloses an ultra-compact metamaterial wave-absorbing unit, which comprises a first metal film, a rectangular medium layer is arranged on the rectangular first metal film, a second metal film is arranged on the rectangular medium layer, the first metal film is provided with a hollow, the hollow consists of a first C-shaped hollow and a second C-shaped hollow, moreover, the first C-shaped hollow and the second C-shaped hollow are arranged back to back, the second metal film consists of a first C-shaped metal foil and a second C-shaped metal foil, furthermore, the first C-shaped metal foil and the second C-shaped metal foil are arranged back to back, and the hollow is shaped like the second metal film. The ultra-compact metamaterial wave-absorbing unit has the advantages that: the ultra-compact metamaterial wave-absorbing unit is extremely thin, and the wave-absorbing property exceeds more than negative 15dB.

Description

technical field [0001] The invention relates to an ultra-compact metamaterial wave-absorbing unit. Background technique [0002] Traditional absorbing materials require a thicker size to obtain a better absorbing effect, but in the low frequency band, such as in the frequency range of 1-2GHz, the thickness of the absorbing material usually exceeds 10mm, which is practical in practical applications. It is severely restricted, especially in compact microwave circuits, and it is even more difficult to use. At the same time, the performance of traditional absorbing materials is only about -10dB, which is often difficult to meet the requirements in microwave circuits and antenna arrays. [0003] For this reason, it is necessary to invent a material with an extremely thin thickness and a wave-absorbing performance exceeding -15dB, and the present invention can just meet such design requirements. Contents of the invention [0004] The invention provides an ultra-compact metamate...

AI Technical Summary

Problems solved by technology

[0002] Traditional absorbing materials require a thicker size to obtain a better absorbing effect, but in the low frequency band, such as in the frequency range of 1-2GHz, the thickness of the absorbing material usually exceeds 10mm, which is practical in practical applications. It has been severely restricted, especially in compact microwave circuits, and it is even more difficult to use. At the same time, the performance of traditional absorbing materials is about -10dB, which is often difficult to meet the requirements in microwave circuits and antenna arrays.

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