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

Active Publication Date: 2016-12-07
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fully polarized composite metamaterial for the defect that t

Method used

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

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Embodiment Construction

[0027] Such as figure 2 As shown, the micro-unit structure of the metamaterial provided by the present invention includes a dielectric substrate 11 made of a non-conductive material and a micro-unit structure 10 of two periodic metamaterial structural layers on the upper and lower surfaces of the dielectric substrate, They are the ring-shaped resistive film 12 and the square metal frequency selective surface 13 respectively. In this embodiment, the dielectric substrate uses TSM-DS3 non-conductive material of Taconic Company, the thickness of the entire dielectric substrate is 4-6 mm, and the relative dielectric constant of the dielectric substrate is 2-4. The surface resistivity of the ring-shaped resistive film is 50 ohm / square. The metal foil layer can be any material of gold foil, silver foil or copper foil in the metal foil, the thickness of the metal foil is 0.02-0.05 mm, and the thickness of the resistance film is 0.02-0.05 mm.

[0028] Such as image 3 Shown is a sc...

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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.

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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Application Information

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IPC IPC(8): H01Q15/00H01Q1/42
CPCH01Q1/42H01Q15/0086
Inventor 吴微微袁乃昌孟田珍伍列荣周扬朱畅王超冯起陈曦王青平
Owner NAT UNIV OF DEFENSE TECH
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