Full-polarization single-passband bilateral microwave absorbing band composite metamaterial and antenna housing

A metamaterial and single-passband technology, applied to antennas, radiation unit covers, electrical components, etc., to achieve the effects of improving manufacturing accuracy, reducing costs, and reducing processing difficulty
CN106207480AActive Publication Date: 2016-12-07NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2016-12-07

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Abstract

The invention relates to a composite metamaterial which is characterized in displaying a wave transmitting band and two wave absorbing bands in different bands, belongs to the technical field of a material and an antenna housing, and solves the technical problem of providing the full-polarization composite metamaterial for the defect that the wave absorbing characteristic is only formed at a high frequency side out of the wave transmitting passband. The scheme is that periodic metamaterial structure layers, namely, a resistive film layer and a metal coil layer are respectively attached on the upper surface and the lower surface of a dielectric substrate made of a non-conductive material; the metamaterial is virtually divided into multiple square unit structures which are arranged periodically; and each square unit structure comprises the dielectric substrate and micro-unit structures on the upper surface and the lower surface of the dielectric substrate. The composite metamaterial and the antenna housing have the advantages that the bilateral wave absorbing characteristic appears in the metamaterial, an incoming wave from incidence to the antenna housing is absorbed well, the radar cross section of an antenna is reduced, and the antenna is hidden.
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Description

technical field

[0001] The invention relates to a composite metamaterial which exhibits characteristics of one wave-transmitting frequency band and two wave-absorbing frequency bands respectively in different frequency bands, and is used in the field of radome for protecting antennas. It belongs to the technical field of materials and radomes. Background technique

[0002] A metamaterial is an artificial periodic composite material. By designing the geometry of the metal foil coated on the surface of the dielectric substrate, or even combining concentrated components or magnetic materials to form a metamaterial structure, the electromagnetic properties of the original dielectric substrate can be changed. By design, some metamaterials can achieve the function of wave transmission or absorption in specific frequency bands. Combining these metamaterials with antennas can improve the performance of the antennas. The traditional radome is a dielectric cover made of several lay...

Claims

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