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Broadband low-consumption junior unit left-handed material based on double crosses

A double-cross type and cross-type technology, applied in the direction of electrical components, antennas, etc., can solve the problems of complex structure, large volume, large loss, etc., and achieve the effect of broadening the application field and simple processing technology.

Inactive Publication Date: 2014-12-24
HANGZHOU DIANZI UNIV
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  • 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

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  • Broadband low-consumption junior unit left-handed material based on double crosses
  • Broadband low-consumption junior unit left-handed material based on double crosses
  • Broadband low-consumption junior unit left-handed material based on double crosses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Using circuit board etching technology, a double-cross-type metal line structure unit array is etched on a certain surface of an epoxy resin PCB substrate with a thickness of 0.5mm, and the unit spacing is c=0.15mm. The length of the short horizontal line of the double-cross metal wire is a=1.4mm, the length of the long vertical line is b=2.8mm, the line width of the straight line is w=0.12mm, the horizontal distance between the two cross-shaped metal wires is g=0.18mm, the longitudinal The distance k=2.6mm, and the distance d=0.1mm between the metal wire structure and the upper and lower boundaries. Cut the etched PCB board into a size of 10.08mm × 6.35mm to obtain a single-layer double-cross type left-hand material as attached figure 2 shown.

[0032] The structure was simulated using the commercial electromagnetic simulation software Ansoft HFSS. Simulation S-parameters as attached Figure 3(a) , 3(b) shown, Figure 3(a) is S 11 , S 21 It can be seen that there...

Embodiment 2

[0034]Using circuit board etching technology, a double-cross-type metal line structure unit array is etched on a certain surface of an epoxy resin PCB substrate with a thickness of 0.7mm, and the unit spacing is c=0.25mm. The length of the short horizontal line of the double-cross metal wire a=2.3mm, the length of the long vertical line b=3.1mm, the line width of the straight line w=0.15mm, the horizontal distance between the two cross-shaped metal wires g=0.15mm, the longitudinal The distance k=3.8mm, and the distance d=0.05mm between the metal wire structure and the upper and lower boundaries. Cut the etched PCB board into a size of 16.95mm × 8.24mm to obtain a single-layer double-cross type left-hand material as attached Figure 5 shown.

Embodiment 3

[0036] Using circuit board etching technology, a double-cross-type metal line structure unit array is etched on a certain surface of an epoxy resin PCB substrate with a thickness of 1.0mm, and the unit spacing is c=0.3mm. The length of the short horizontal line of the double-cross metal wire a=4.0mm, the length of the long vertical line b=5.5mm, the line width of the straight line w=0.2mm, the horizontal distance between the two cross-shaped metal wires g=0.1mm, the longitudinal The distance k=4.6mm, and the distance d=0mm between the metal wire structure and the upper and lower boundaries. Cut the etched PCB board into a size of 7.19mm × 17.2mm to obtain a single-layer double-cross type left-hand material as attached. Image 6 shown.

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Abstract

The invention relates to a broadband low-consumption junior unit left-handed material based on double crosses. The broadband low-consumption junior unit left-handed material comprises two cross-shaped metal wire structures, and is formed by arranging the two cross-shaped metal wire structures on the same side of a dielectric substrate in a mirroring paralleling mode. Each cross-shaped metal wire structure is composed of a short transverse straight line and a long vertical straight line, wherein the length a of the short transverse straight line of the cross-shaped metal wire structure ranges from 1.0 mm to 5.0 mm, the length b of the long vertical straight line ranges from 2.0 mm to 6.0 mm, and the line width of the long vertical straight line ranges from 0.1 mm to 0.25 m. The transverse distance g of the long vertical straight lines of a double cross-shaped metal wire structure unit array ranges from 0.1 mm to 0.25 mm, and the longitudinal distance k between the short transverse straight lines ranges from 2.5 mm to 6.0 mm. The broadband low-consumption junior unit left-handed material is easy to machine; through the high coupling performance of the two cross-shaped structures, the bandwidth can reach to more than fifty percent under the condition that the transmission loss is very small, and the unit electrical length is very low, and the application range of the left-handed material is expanded.

Description

technical field [0001] The invention relates to a left-handed material based on a double-cross type broadband low-consumption small unit, belonging to the field of electromagnetic medium characteristic research. Background technique [0002] Veselago proposed the concept of left-handed material in 1968, and pointed out that its permittivity and permeability are both negative in a certain electromagnetic wave frequency band, and have many strange electromagnetic properties such as negative refraction phenomenon, perfect lens effect, inverse Doppler effect, etc. (V. G. Veselago. The Electrodynamics of Substances with Simultanesously Negtive Value [J]. Soviet Physics. 1968, 10:509-514). It is precisely because of these special electromagnetic properties that left-handed materials have a wide range of important applications in optical imaging, antenna systems, microwave devices, and electromagnetic stealth. However, this theory was not first realized by Smith in the form of a m...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
Inventor 耿友林董怀景
Owner HANGZHOU DIANZI UNIV
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