Unlock instant, AI-driven research and patent intelligence for your innovation.

Terahertz three-frequency-band absorber with plastic sphere periodic structures

A periodic structure and absorber technology, which is applied in the field of terahertz absorbers, can solve problems such as high processing costs, restricting the application of absorbers, and complex structures

Active Publication Date: 2019-12-20
CHINA JILIANG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most terahertz absorbers at home and abroad have the characteristics of complex structures and high processing costs, which restrict the application of absorbers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Terahertz three-frequency-band absorber with plastic sphere periodic structures
  • Terahertz three-frequency-band absorber with plastic sphere periodic structures
  • Terahertz three-frequency-band absorber with plastic sphere periodic structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the structure of the three-band terahertz absorber with the periodic structure of plastic spheres and the shapes of the components are as described above, so details are not repeated here. The specific parameters of each component are as follows: the bottom surface of the cuboid plastic dielectric substrate is a square, its side length is 400 μm, and its height is 100 μm; the thickness of the bottom metal film and the top metal layer are both 1 μm; the radius R of the plastic sphere is 55 μm. The period L of the adjacent plastic truncated cone unit is 400 μm. The various performance indicators of the terahertz dual-band absorber based on the plastic frustum-conical structure were calculated and obtained using CST Studio Suite 2018 software. Figure 5 The performance curve of the terahertz triple-band absorber with plastic sphere structure. Figure 6 shown in f =0.3THz, the absorption rate of the absorber reaches 90%. Figure 7 shown in f =0.6THz,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a three-frequency-band absorber with plastic sphere periodic structures. The absorber comprises the N * N plastic sphere unit structures, wherein N is a natural number, each plastic sphere unit structure sequentially comprises a bottommost metal film, a cuboid plastic medium base body, a plastic sphere and a top hemispherical metal layer from bottom to top. By changing theradius of a plastic sphere and the period of the plastic sphere, the absorber achieves the optimal absorption effect. The simulation result shows that the absorber has three absorption frequency points, and absorptivity reaches 90% or above. The three-frequency-band absorber based on the plastic sphere structures is advantaged in that the absorber is simple in structure, low in cost, excellent inperformance and the like, and the requirement for terahertz communication is met.

Description

technical field [0001] The invention relates to a terahertz absorber, in particular to a terahertz three-band absorber with a periodic structure of plastic spheres. Background technique [0002] Terahertz generally refers to electromagnetic waves with a frequency of 0.1~10THz, and the corresponding wavelength is 0.03mm~3mm. In recent years, the terahertz wave between the millimeter wave and infrared light, which has been developed quite maturely on the electromagnetic spectrum, is undoubtedly a brand-new research field, and it has great potential value in all aspects. For a long time, due to the lack of effective terahertz wave generation and detection methods, compared with traditional microwave technology and optical technology, people have little understanding of the nature of electromagnetic radiation in this band, so that this band has become the terahertz wave in the electromagnetic spectrum. void. With the breakthrough of terahertz radiation source and detection tec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/008
Inventor 李九生张丽娜
Owner CHINA JILIANG UNIV