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

I-shaped left-handed material

A left-handed material and I-shaped technology, applied in the field of metamaterials, can solve problems such as narrow bandwidth, large loss, and complex structure, and achieve excellent performance

Inactive Publication Date: 2018-06-22
TIANJIN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these structures generally have a series of problems such as complex structure, narrow bandwidth, large loss, and large volume, which seriously limit the application and development of left-handed materials.

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
  • I-shaped left-handed material
  • I-shaped left-handed material
  • I-shaped left-handed material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] The invention protects an I-shaped left-handed material, which includes a unit structure composed of a dielectric substrate. In this embodiment, the dielectric substrate is made of a commonly used dielectric FR4 material, with a relative permittivity of 4.4, a loss tangent of 0.02, and a height of the substrate h=3.36mm, width a=1.40mm, thickness 0.50mm, structural dimensions such as figure 1 As shown, one side of the dielectric substrate is plated with I-shaped copper plating, the width of the copper plating is 0.12mm, and the thickness is 0.035mm. And the specific size of the vertical copper plating length of the I-shaped structure after optimized design by HFSS software is l=2.60mm.

[0020] In this embodiment, the left-hand material unit structure is printed on one side of the dielectric substrate, and expands in three directions of the three-dimensional co...

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

PropertyMeasurementUnit
heightaaaaaaaaaa
heightaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an I-shaped left-handed material. The material comprises unit structures composed of dielectric substrates; each dielectric substrate is made of an epoxy resin plate with an dielectric constant of 4-4.8 and a loss tangent value of 0.02; the dielectric substrate has the height of 3-3.6mm, the height of 1.2-1.6mm and the thickness of 0.5mm; one side of the dielectric substrate is plated with plating copper adopting a square structure; the unit structures are extended in a three-dimensional direction and mutually connected to form an array adopting an I-shaped structure; the array adopting the I-shaped structure is set as a perfect magnetic boundary condition PHC in an X-axis direction and is set as a perfect conductor boundary condition PEC in a Z-axis direction; electromagnetic waves are incident in a Y-axis direction; an excitation mode is set as wave impedance excitation; and left-handed characteristics are achieved in the Y-axis direction.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to an I-shaped left-handed material. Background technique [0002] Veselago proposed the concept of left-handed materials in 1968, and pointed out that its permittivity and magnetic permeability are negative at the same time in a certain electromagnetic wave frequency band, and has many strange electromagnetic properties such as negative refraction, perfect lens effect, inverse Doppler effect, etc. . It is precisely because of these special electromagnetic properties that left-handed materials have extensive and important applications in the fields of optical imaging, antenna systems, microwave devices, and electromagnetic stealth. However, this theory was not realized for the first time by Smith in the form of a combination of metal wire and split resonator ring until thirty years later. Since then, the study of left-handed materials has embarked on a fast track of rapid development....

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): H01Q15/00
CPCH01Q15/00
Inventor 金杰何政蕊张赟
Owner TIANJIN UNIV