Negative magnetic conductivity metamaterial
A technology of negative magnetic permeability and metamaterials, which is applied in the field of metamaterials, can solve the problems of low resonance frequency and reduction of metamaterial resonance frequency, etc., and achieve the effect of reducing resonance frequency, increasing capacitance, and good development prospects
Active Publication Date: 2012-07-18
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology
At present, the geometric shape of the existing artificial microstructure is "I" shape or such as figure 1 The opening ring similar to the "concave" shape is shown, but none of these structures can achieve a magnetic permeability μ significantly less than 0 or significantly reduce the resonant frequency of the metamaterial. Only by designing an artificial microstructure with a special geometric figure can the artificial Electromagnetic materials achieve a magnetic permeability μ value far less than 0 in a specific frequency band, and have a lower resonance frequency
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[0031] The present invention provides a negative magnetic permeability metamaterial, such as figure 2 As shown, it includes a first dielectric substrate 5, a second dielectric substrate 6, a third dielectric substrate 7, and a first artificial microstructure layer 1 and a second artificial microstructure layer 2 fixed on both sides of the first dielectric substrate 5, fixed on The third artificial microstructure layer 3 and the fourth artificial microstructure layer 4 on both sides of the third dielectric substrate 7, a second dielectric substrate 6 is fixed between the second artificial microstructure layer 2 and the third artificial microstructure layer 3, and the first The artificial microstructure layer 1, the second artificial microstructure layer 2, the third artificial microstructure layer 3, and the fourth artificial microstructure layer 4 are all composed of a plurality of artificial microstructures arranged in an array. The individual artificial microstructures are ...
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Abstract
The invention relates to a negative magnetic conductivity metamaterial. The metamaterial comprises three layers of medium substrates and four artificial microstructure layers which are respectively and fixedly arranged at the both sides of the three layers of the medium substrates. Artificial microstructures of a first artificial microstructure layer and a second artificial microstructure layer are respectively connected with each other through a plurality of first metal through holes; and artificial microstructures of a third artificial microstructure layer and a fourth artificial microstructure layer are respectively connected with each other through a plurality of second metal through holes. The artificial microstructures are Archimedes metal spirals. In a condition that the artificial microstructures are same in size, the resonance frequency of the metamaterial disclosed by the invention can be greatly reduced. Meanwhile, the metamaterial provided by the invention has the magnetic conductivity being -1 within a working frequency band. The negative magnetic conductivity metamaterial has important meanings for the development of the metamaterial industry and has good development and application prospects.
Description
technical field [0001] The invention relates to the field of metamaterials, in particular to a negative magnetic permeability metamaterial. Background technique [0002] At present, there have been a lot of research on magnetic permeability in the international community, among which the research on positive magnetic permeability has become mature, and the research on negative magnetic permeability metamaterials is now a hot research topic at home and abroad. Negative magnetic permeability has Quantum polarization can polarize incident waves, so it has a wide range of effects, such as magnetic resonance imaging in the field of medical imaging. Negative magnetic permeability materials can enhance the imaging effect of electromagnetic waves. In addition, negative magnetic permeability materials It also plays an important role in lens research. In the field of engineering, magnetic permeability usually refers to relative magnetic permeability, which is the absolute magnetic per...
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Inventor 刘若鹏赵治亚郭洁余铨强
Owner KUANG CHI INST OF ADVANCED TECH