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Electric field adjustable negative magnetic conductivity device based on liquid crystal and manufacturing method

A production method and adjustable negative technology, applied in the direction of waveguide devices, electrical components, instruments, etc., can solve the problems of time-consuming and labor-intensive, and achieve the effect of dynamically adjustable working frequency

Active Publication Date: 2013-11-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this solution is passive, time-consuming and labor-intensive

Method used

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  • Electric field adjustable negative magnetic conductivity device based on liquid crystal and manufacturing method
  • Electric field adjustable negative magnetic conductivity device based on liquid crystal and manufacturing method
  • Electric field adjustable negative magnetic conductivity device based on liquid crystal and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: use circuit board printing technology to etch rectangular metal sheet 5 arrays and electrodes 6 on one side of a copper clad laminate 1 with a thickness of 1.00mm, the size of the metal sheet 5 is: W=4.00mm, W 1 =1.00mm, L=9.00mm, Px=11.00mm, Py=6.00mm. Positioning holes 4 with a diameter of 1.00 mm are machined at the four corners of the copper clad laminate 1 . An epoxy glass plate with a thickness of 0.50 mm and the same size as the copper clad laminate 1 is selected, and a U-shaped bead 2 with a side width of 5.00 mm and a positioning hole 4 is prepared by using a numerical control machine tool. Coat the polyimide liquid crystal aligning agent arranged along the surface on the side of the copper-clad laminate 1 with the metal sheet array by the spin coating method, heat-cure the film by step heating method, and use a dust-free cloth on the polyimide film along the Orientation rubbing in the direction of the electrodes to obtain a polyimide liquid crys...

Embodiment 2

[0045] Example 2: A rectangular metal sheet 5 array and electrodes 6 are prepared on a copper clad laminate 1 with a thickness of 1.00mm by using circuit board printing technology. The size of the metal sheet is: W=5.00mm, W 1 = 0.80 mm, L = 9.00 mm, Px = 12.00 mm, Py = 5.00 mm, and at the same time, a positioning hole 4 with a diameter of 1.00 mm is machined at the four corners of the copper clad laminate 1 . Select an epoxy glass plate with a thickness of 0.40 mm and the same size as the copper-clad laminate 1, and use a CNC machine tool to prepare a U-shaped bead 2 with a side width of 5.00 mm, and machine the four corners of the U-shaped bead 2 into a positioning plate with a diameter of 1.00 mm. hole. Coat the polyimide liquid crystal aligning agent arranged along the surface on the side of the copper-clad laminate 1 with the metal sheet array by the spin coating method, heat-cure the film by step heating method, and use a dust-free cloth on the polyimide film along the ...

Embodiment 3

[0048] Example 3: A circular metal sheet 5 array and electrodes 6 were prepared on a copper-clad laminate 1 with a thickness of 1.00 mm by circuit board printing technology, and positioning holes 4 with a diameter of 1.00 mm were machined at the four corners of the copper-clad laminate 1 . The size of circular metal sheet 5 is: R=4.00mm, W 1 =1.00mm, Px=11.00mm, Py=11.00mm. An epoxy glass plate with a thickness of 0.60 mm and the same size as the copper clad laminate 1 is selected, and a U-shaped bead 2 with a side width of 5.00 mm and a positioning hole 4 is prepared by using a numerical control machine tool. Coat the polyimide liquid crystal aligning agent arranged along the surface on the side of the copper-clad laminate 1 with the metal sheet array by the spin coating method, heat-cure the film by step heating method, and use a dust-free cloth on the polyimide film along the Orientation rubbing in the electrode direction to obtain a polyimide liquid crystal alignment laye...

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Abstract

The invention discloses an electric field adjustable negative magnetic conductivity device based on liquid crystal and a manufacturing method thereof, which solves the technical problem of narrow work frequency band of the traditional negative magnetic conductivity material. The technical scheme is characterized in that the liquid crystal is injected into a liquid crystal injection cavity formed by a copper-clad plate and a U-shaped pressing strip so as to enable the liquid crystal to be a substrate of the negative magnetic conductivity device; and a lead-out electrode on the copper-clad plate is connected with a positive electrode of a direct current power source while the other lead-out electrode on the copper-clad plate is connected with a negative electrode of the direct current power source. By using the characteristic that the liquid crystal dielectrical property is easily subjected to outer field control, equivalent dielectric constants of the liquid crystal are changed through an applied electric field so as to realize dynamic adjustment of the work frequency of the negative magnetic conductivity device, and the maximum adjustment amplitude is up to 1.20GHz.

Description

technical field [0001] The invention relates to a negative magnetic permeability device, in particular to a liquid crystal-based electric field adjustable negative magnetic permeability device. It also relates to a manufacturing method of the electric field adjustable negative magnetic permeability device. Background technique [0002] refer to Figure 8 , the document "Dependence of the distance between cut-wire-pair layers on resonance frequencies", Optics Express, 2008, vol.18, no.8, p.5934-5941" discloses a negative magnetic permeability based on metal sheet pairs rate material, this negative magnetic permeability material is respectively etched periodically arranged metal sheets 5 on the front and back sides of the copper clad laminate 1, and the metal sheets 5 are arranged in pairs on the front and back sides of the copper clad laminate 1. Under the excitation of the vertically incident electromagnetic wave, the cladding The metal sheets on the front and back sides of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/00H01P11/00G02F1/355
Inventor 张富利张卫红邱克鹏汤兴刚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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