Metamaterial substrate based on controllable dielectric constant and preparation method of substrate
A dielectric constant and metamaterial technology, applied in the field of metamaterials, can solve the problems of high loss and high dielectric constant of PCB substrates, and achieve the effect of light weight, low dielectric constant and loss, and wide application fields
Active Publication Date: 2015-03-04
KUANG CHI INST OF ADVANCED TECH +1
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Problems solved by technology
At present, the realization of the metamaterial structure is mainly completed by making metal wires on the PCB. The traditional PCB substrate has a high dielectric constant and a large loss. The dielectric constant of the tetrafluoroethylene substrate with the lowest dielectric constant on the market is generally higher than that of the PCB. 2.5, unable to meet the requirements of some high-demand metamaterial design
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[0017] 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.
[0018] A method for preparing a metamaterial substrate based on a controllable dielectric constant, the preparation method comprising the following steps: as figure 1 as shown,
[0019] a. Dissolve a certain amount of atmospheric supercritical fluid into the thermoplastic polymer melt to form a single-phase melt. The atmospheric supercritical fluid is generally CO 2 supercritical fluid or N 2 supercritical fluid;
[0020] b. Injected into the mold cavity with low temperature and pressure, the molecular instability is caused by the decrease of temperature and pressure, thus forming a large number...
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The invention provides a metamaterial substrate based on a controllable dielectric constant and a preparation method of the substrate. A micropore-containing metamaterial substrate is manufactured by utilizing a micro-fine foamed injection molding process, and the density and dielectric constant of the substrate are reduced through the introduced air; a thermoplastic polymer serves as a main material for the substrate, and compared with a hard ceramic material, the substrate is light in weight, small in dielectric constant, low in loss and wide in application field; and moreover, according to the micro-fine foamed injection molding process, the dielectric constant of the substrate can be finely controlled, and the substrate has significance for realizing a graded index metamaterial and converting the metamaterial with reasonable design into a realistic product.
Description
【Technical field】 [0001] The invention relates to the field of metamaterials, in particular to a metamaterial substrate based on controllable dielectric constant and a preparation method thereof. 【Background technique】 [0002] Metamaterials refer to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, it is possible to break through the limitations of some apparent natural laws, so as to achieve supernormal material functions beyond the ordinary properties inherent in nature. The properties and functions of metamaterials mainly come from their internal structures rather than the materials that make them up, so a lot of research work has been done to design and synthesize metamaterials. In 2000, Smith et al. of the University of California pointed out that the composite structure of periodically arranged met...
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IPC IPC(8): B29C44/00B29C44/34B29L7/00
Inventor 刘若鹏赵治亚法布里奇亚·盖佐何雪涵
Owner KUANG CHI INST OF ADVANCED TECH