Novel large-angle wave transmission antenna cover

Abstract

The invention discloses a novel large-angle wave transmission antenna cover which comprises a metamaterial, wherein the metamaterial comprises a first metamaterial sheet layer and a second metamaterial sheet layer; each metamaterial sheet layer comprises a substrate and a plurality of artificial microstructures which are arranged in arrays on the substrate and same in shape and size; the artificial microstructures of the first metamaterial sheet layer are rectangular metal patches; the artificial microstructures of the second metamaterial sheet layer are planar snowflake-shaped structures; each planar snowflake-shaped structure is provided with a first metal wire and a second metal wire which are perpendicularly bisected; two first metal branches with the same length are connected to the two ends of each first metal wire; the two ends of the first metal wire are connected to the center points of the two first metal branches; two second metal branches with the same lengths are connected to the two ends of each second metal wire; the two ends of the second metal wire are connected to the center points of the two second metal branches; the first metal branches and the second metal branches are the same in length. The antenna cover provided by the embodiment of the invention is improved in wave transmission performance and anti-jamming capability.

Description

technical field [0001] The invention relates to the field of electromagnetic technology, in particular to a novel large-angle wave-transmitting radome. Background technique [0002] Metamaterial is a new type of artificial synthetic material, which is composed of a substrate made of non-metallic materials and multiple artificial microstructures attached to the surface of the substrate or embedded in the substrate. The substrate can be virtually divided into multiple substrate units arranged in a rectangular array. Each substrate unit is attached with artificial microstructures to form a metamaterial unit. The entire metamaterial is composed of many such metamaterial units, just like Crystals are composed of countless crystal lattices arranged in a certain way. The artificial microstructures on each metamaterial unit may or may not be identical. Artificial microstructures are planar or three-dimensional structures with certain geometric figures composed of metal wires, such...

AI Technical Summary

Problems solved by technology

The structure is mostly uniform single-wall structure, sandwich structure and space frame structure, etc. The design of the cover wall thickness needs to take into account factors such as the working wavelength, the size and shape of the radome, environmental conditions, and the electrical and structural performance of the materials used, which is difficult. Reach high wave-transmission requirements, even under the condition of ensuring high transmittance, it does not have the function of large-angle wave-transmission

Moreover, the working frequency band of the radome is relatively narrow, and the radome needs to be replaced under different frequency band requirements, which cannot realize the reuse of resources, resulting in waste of resources and increase in equipment costs

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