A kind of metamaterial, metamaterial satellite antenna and satellite receiving system
A satellite antenna and metamaterial technology, applied in the field of metamaterials, can solve the problems of large margin difference, antenna gain drop, signal drop, etc., to avoid warping, high gain, and avoid leakage wave phenomenon.
Active Publication Date: 2018-04-17
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology
[0003] Antennas made of metamaterials generally use a whole piece of metallic copper as the reflective surface, but when the structure of the antenna design is asymmetrical, that is, when the copper (or other metal) allowances on both sides of the substrate are quite different, no matter it is Fr4, PTFE, etc. Whether it is a traditional substrate or a fiber-free substrate, the final product will have varying degrees of warpage
The warping will cause the deviation between the actual product pattern and the design drawing, the antenna gain will decrease, and the signal will decrease
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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] Such as figure 1 As shown, a metamaterial includes a substrate 1, a metamaterial working layer 4 on one side of the substrate 1, and a metamaterial reflective layer 2 on the other side of the substrate. The working layer is formed by etching, electroplating, drilling, photolithography, electronic engraving or The ion etching method is composed of multiple metal microstructures attached to the surface of the substrate according to a certain refractive index distribution. The metal microstructure of the working layer is a plane or three-dimensional structure with a certain geometric shape comp...
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Abstract
The invention provides a metamaterial which comprises a substrate, a metamaterial working layer on one side of the substrate, and a metamaterial reflecting layer on the other side of the substrate, wherein the working layer comprises a plurality of metal micro structures attached to one surface of the substrate, the reflecting layer comprises a plurality of cross-shaped metal micro structures distributed on the other surface of the substrate periodically, the adjacent cross-shaped metal micro structures are connected in a zero clearance manner, the total metal area of the cross-shaped metal micro structures is 10 percent to 25 percent of the surface area of the substrate. The invention further relates to a metamaterial satellite antenna and a satellite receiving system which are prepared by using the metamaterial provided by the invention. While a reflecting function is achieved, the metal area of the reflecting area is enabled to be very close to the metal remnant area of the working layer, therefore, the problem of warping of the reflecting layer caused by the asymmetric designed structure of the metamaterial can be effectively avoided; in addition, the surface of the reflecting layer is coated with a conductive paint layer, so that the phenomenon of wave leakage can be avoided. Therefore, the high precision and high gain of the metamaterial satellite antenna can be achieved.
Description
【Technical field】 [0001] The invention relates to the field of metamaterials, more specifically, to a metamaterial, a metamaterial satellite antenna and a satellite receiving system. 【Background technique】 [0002] Metamaterials are materials that can modulate electromagnetic waves developed in the past ten years. Metamaterials are generally composed of a certain number of metal microstructures attached to a substrate with certain mechanics and electromagnetism. These microstructures with specific patterns and materials can modulate electromagnetic waves of specific frequency bands passing through them. [0003] Antennas made of metamaterials generally use a whole piece of metallic copper as the reflective surface, but when the structure of the antenna design is asymmetrical, that is, when the copper (or other metal) allowances on both sides of the substrate are quite different, no matter it is Fr4, PTFE, etc. Whether it is a traditional substrate or a fiberless substrate, ...
Claims
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IPC IPC(8): H01Q15/23H01Q19/06H01Q19/10
Inventor 刘若鹏季春霖岳玉涛李雪
Owner KUANG CHI INST OF ADVANCED TECH