Metamaterial antenna housing and antenna system

Abstract

The invention relates to a metamaterial antenna housing which is provided with a metamaterial layer. The metamaterial layer comprises a dielectric substrate and a plurality of metal micro-structures attached to the two opposite surfaces of the dielectric substrate. Every two metal micro-structures arranged at the corresponding positions of the two opposite surfaces of the dielectric substrate form a pair. According to each pair of the metal micro-structures, either metal micro-structure comprises two branches which are mutually orthogonal. Each branch comprises a first metal line segment, a second metal line segment and a third metal line segment. The first metal line segments and the second metal line segments are parallel to one another and just opposite to one another. One third metal line segment is located between each first metal line segment and each second metal line segment. The third metal line segments are perpendicularly connected with the first metal line segments and the second metal line segments. One third metal line segment is connected at the middle point of each first metal line segment and each second metal line segment. The third metal line segments of the two branches are perpendicularly intersected at the middle points of the third metal line segments. The metal micro-structures on one surface are overlapped with the metal micro-structures on the other surface, and therefore the metamaterial antenna housing has good wave-transparent performance. The invention further provides an antenna system.

Description

technical field [0001] The present invention relates to a radome and an antenna system, more specifically, to a radome and an antenna system made of newly designed metamaterials. Background technique [0002] In the antenna system, it is often necessary to use a radome to cover the antenna to protect the antenna from the influence of the harsh external environment. In this way, when the antenna sends and receives electromagnetic waves, the electromagnetic waves must pass through the radome. Although materials with low dielectric constant and loss tangent and high mechanical strength are mostly used in the manufacture of radomes, such as fiberglass, epoxy resin, ABS and UPVC and other polymers, they still cannot match the wave impedance of air. When the electromagnetic wave propagates between the air and the radome, it will not only be reflected, but also the radome will have a large loss of electromagnetic waves, thereby reducing the radiation efficiency and gain of the ante...

AI Technical Summary

Problems solved by technology

Although materials with low dielectric constant and loss tangent and high mechanical strength are mostly used in the manufacture of radomes, such as fiberglass, epoxy resin, ABS and UPVC and other polymers, they still cannot match the wave impedance of air. When the electromagnetic wave propagates between the air and the radome, it not only reflects, but also the radome has a large loss of electromagnetic waves, which reduces the radiation efficiency and gain of the antenna and seriously affects the electromagnetic performance of the antenna.

In addition, most of the existing radome structures are uniform single-wall structure, sandwich structure and space frame structure. Under the condition of meeting the mechanical performance requirements, the radome wall is relatively thick, and the thickness of the radome is the same as that of the radome. In this way, it is impossible to take into account the mechanical properties of the radome and the requirements of high transmittance

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