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Metamaterial

A technology of metamaterials and non-metallic materials, applied in the field of metamaterials, can solve problems such as excessive frequency, achieve the effect of enhancing the reception of radio frequency magnetic field and improving the imaging effect

Active Publication Date: 2012-10-10
KUANG CHI INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention reduces the problem that the frequency is too large when the magnetic permeability of the metamaterial is negative by adopting the method of inserting chip inductors in series in the artificial microstructure of the metamaterial. In order to achieve this purpose, the present invention Adopt the following technical solutions:

Method used

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Embodiment Construction

[0022] like figure 1 , figure 2 Shown is a schematic structural view of Embodiment 1 of the metamaterial of the present invention, the metamaterial includes at least one material sheet 1, each material sheet 1 includes a substrate 2, a plurality of artificial microstructures 3 attached to the surface of the substrate 2, and SMD inductor4. The base plate 2 is in the shape of a flat plate, or in the shape of a thin sheet bent into a ring, or in the shape of a grid composed of a plurality of strips interlocked at right angles. The substrate 2 is usually made of non-metallic materials such as polytetrafluoroethylene, epoxy resin, FR4, and ceramics. The artificial microstructure 3 is an open ring formed by the wiring of a conductive material, and the artificial microstructure includes a periodic arrangement on the surface of the substrate 2, such as a rectangular array arrangement, that is, a row in the x direction and a line perpendicular to the x direction. The y-direction of...

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Abstract

The invention discloses a metamaterial. The metamaterial comprises a base plate made from a non-metal material and a plurality of artificial microstructures which are attached onto the base plate and are periodically arranged, wherein the artificial microstructure is an opening ring which is made from a conductive material and is formed by a routing line. The metamaterial further comprises at least one chip inductor arranged on the opening ring, wherein the chip inductor is connected into the routing line of the opening ring in series. When the metamaterial has negative magnetic permeability, the responsive electromagnetic wave frequency is lower, the requirement of an MRI (Magnetic Resonance Imaging) system on the low frequency can be met, the receiver radio frequency magnetic field generated by the magnetic resonance imaging is enhanced, the imaging effect of the MRI system is improved, and the requirement of human body safety is satisfied at the same time.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a metamaterial with negative magnetic permeability and low response frequency. Background technique [0002] Metamaterial, also known as artificial electromagnetic material, is a new type of artificial synthetic material that can respond to electromagnetic waves. It consists of a substrate and an artificial microstructure attached to the substrate. Since the artificial microstructure is usually a structure with a certain geometric figure arranged by metal wires, it can respond to electromagnetic waves, so that the metamaterial as a whole reflects electromagnetic properties different from that of the substrate, and has a specific dielectric constant ε, magnetic permeability. The rate μ or the refractive index n, and these parameters are functions of the frequency of electromagnetic waves, usually not a constant value. [0003] The application of metamaterial technology in the field o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00A61B5/055
Inventor 刘若鹏栾琳郭洁
Owner KUANG CHI INST OF ADVANCED TECH
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