Microwave and terahertz wave band broadband absorption metamaterial
A metamaterial and broadband technology, applied in the field of metamaterials, can solve problems such as complex cross-band structures, achieve the effects of simple structure, convenient processing, and enhanced absorption rate
Inactive Publication Date: 2020-06-26
Anhui Huaxia Photoelectrics Co Ltd
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Problems solved by technology
However, there are very few literature reports on cross-band metamaterial absorbers, and the cross-band structure is relatively complex, which achieves narrow-band absorption
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[0021] The present invention will be further described below in conjunction with accompanying drawing:
[0022] Such as figure 1 with figure 2 As shown, the present invention includes a ring resonator 1 , a first dielectric layer 2 , a first metal reflective layer 3 , a second dielectric layer 4 , a resistive film layer 5 , a third dielectric layer 6 and a second metal reflective layer 7 . The ring resonator 1, the first dielectric layer 2, the first metal reflective layer 3, the second dielectric layer 4, the resistive film layer 5, the third dielectric layer 6 and the second metal reflective layer 7 are arranged sequentially from top to bottom. The ring resonator 1 is composed of a plurality of unit devices, and the plurality of unit devices are arranged periodically. The unit device includes a large metal ring 8 and a small metal ring 9 , and the small metal ring 9 is located inside the large metal ring 8 . The number of large metal rings 8 in a single unit device is 1,...
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Abstract
The invention discloses a microwave and terahertz wave band broadband absorption metamaterial, and relates to the technical field of metamaterials. The microwave and terahertz wave band broadband absorption metamaterial comprises an annular resonator, a first dielectric layer, a first metal reflection layer, a second dielectric layer, a resistive film layer, a third dielectric layer and a second metal reflection layer. The annular resonator is composed of a plurality of unit devices which are periodically arranged, each unit device comprises a large metal ring and a small metal ring, the smallmetal rings are located at the inner sides of the large metal rings, and the width of the cross section of each large metal ring is smaller than that of the cross section of the corresponding small metal ring. According to the invention, the problems of limited absorption bandwidth and difficult processing of the existing cross-band metamaterial are solved; the broadband absorption metamaterial adopts the dipole resonance absorption principle, is simple in structure, short in broadband absorption metamaterial period and low in manufacturing precision requirement, has the effect of high absorption rate of a cross-band broadband, and has the advantage of cross-band multiple functions.
Description
technical field [0001] The invention relates to the technical field of metamaterials, in particular to a broadband absorbing metamaterial in microwave and terahertz bands. Background technique [0002] Metamaterials are a class of man-made materials with special properties that are not found in nature. They have some special properties, such as allowing light and electromagnetic waves to change their usual properties, and such effects cannot be achieved by traditional materials. Since Landy et al. proposed the first perfect metamaterial absorber in 2008, as an important branch of metamaterials in recent years, metamaterial absorbers have attracted great interest, especially those based on terahertz metamaterial absorbers. The perfect absorber is the most typical representative, which can overcome the weak interaction between natural materials and terahertz waves, and thus has been widely used in the fields of communication, detection, imaging and radar. However, most of th...
Claims
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Login to View More IPC IPC(8): H01Q15/00H01Q17/00G02B1/00
CPCG02B1/002H01Q15/0086H01Q17/008
Inventor 毕竞纪艳平吴诚胡海城罗菲胡晓倩张文刘娟凌百川
Owner Anhui Huaxia Photoelectrics Co Ltd