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Microwave radome and antenna system

A technology of microwave antenna and artificial microstructure, which is applied in the field of radome, can solve the problems of poor wave transmission performance and inability to increase antenna gain, etc., to achieve enhanced wave transmission performance, reduction of material thickness and permittivity limitations, and increase of gain Effect

Inactive Publication Date: 2012-10-03
KUANG CHI INNOVATIVE TECH
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a microwave radome and an antenna system for the above-mentioned poor wave-transmitting performance of the prior art and the inability to improve the antenna gain

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  • Microwave radome and antenna system
  • Microwave radome and antenna system
  • Microwave radome and antenna system

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Embodiment Construction

[0027] Metamaterials are artificial composite structural materials with extraordinary physical properties that natural materials do not have. Through the orderly arrangement of microstructures, the relative permittivity and magnetic permeability of each point in space can be changed. Metamaterials can realize within a certain range the refractive index, impedance, and wave-transmitting properties that ordinary materials cannot possess, so that they can effectively control the propagation characteristics of electromagnetic waves. The metamaterial radome based on the artificial microstructure can change the relative permittivity, refractive index and impedance of the material by adjusting the shape and size of the artificial microstructure, so as to achieve impedance matching with the air to maximize the incident electromagnetic wave. Transmission, improve the directionality of electromagnetic wave radiation, and increase the gain of the antenna.

[0028] The present invention p...

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Abstract

The invention relates to a microwave radome and an antenna system. The microwave radome is sleeved on microwave antennas and comprises a metamaterial slice layer and protection layers covered on two opposite surfaces of the metamaterial slice layer. The metamaterial slice layer comprises a substrate and a plurality of artificial micro-structures arrayed on two opposite surfaces of the substrate. Thickness of the substrate is equal to that of each protection layer. The substrate can be divided into multiple metamaterial units, artificial micro-structures are distributed on two opposite surfaces of each metamaterial unit respectively, and sizes of the artificial micro-structures are the same. The artificial micro-structures are cross-shaped, and four ends of each cross-shaped structure are attached to boundaries of the metamaterial units. The artificial micro-structures with specific shapes are attached to the substrate, the shapes and the sizes of the artificial micro-structures are adjusted to change the relative dielectric constant, the refractive index and the impedance, transmission of the electromagnetic wave is reinforced, and directivity and gain of the antennas are improved.

Description

technical field [0001] The present invention relates to radomes and, more particularly, to microwave radomes and antenna systems. Background technique [0002] Metamaterials, commonly known as metamaterials, are a new type of 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 interior of 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 o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q15/00
Inventor 刘若鹏赵治亚方小伟王海莲
Owner KUANG CHI INNOVATIVE TECH
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