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Guide medium composed of S-type unit

A technology of anisotropic medium and negative dielectric constant, applied in electrical components, optics, instruments, etc., can solve the problems of poor stability, large loss, narrow frequency band, etc., and achieve the effect of stable performance, low loss and wide frequency band.

Inactive Publication Date: 2005-08-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the heterotropic medium mainly adopts the structure of SRR+Rod, such as figure 2 As shown, this structure has poor stability and complex structure. Two structures are needed to produce the characteristics of negative ε and negative μ, the loss is large, and the frequency band where the negative refractive index is located is very narrow (<1GHz); compared with it, the S-shaped medium to overcome these disadvantages

Method used

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  • Guide medium composed of S-type unit
  • Guide medium composed of S-type unit
  • Guide medium composed of S-type unit

Examples

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Embodiment Construction

[0015] Such as figure 1 Shown is an S-shaped heterogeneous dielectric structure of a unit, which consists of a characteristic S-shaped metal strip that produces an equivalent negative permittivity and another S-shaped metal strip that produces an equivalent negative magnetic permeability. According to the opposite direction, use the printed circuit process to print on both sides of the substrate medium, and then arrange them periodically in the x and y directions to form an S-type anisotropic medium with negative refractive index characteristics. figure 1 The length a of the middle S-shaped metal strip is 5mm, the line width is 0.4mm, and the width is 2.4mm.

[0016] Such as image 3 Shown is the S-type anisotropic medium with the characteristic of negative refractive index, which is composed of a pair of S structures or any pair of S structures connected in series end to end.

[0017] The front S and the back S are reversed, printed on the substrate, and then arranged per...

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Abstract

This invention discloses an inverted medium composed of a pair of metal strips, one is a specific S-like metal strip generating equivalent negative dielectric constant and the other generating equivalent negative magnetic conductivity, which are printed on both sides of the base board medium with printed circuit technology in terms of inverted directions then to be arrayed periodically on x, y directions to make up of a S-like inverted medium with the negative index of refraction property.

Description

technical field [0001] The invention relates to a heterotropic medium composed of S-type units. Background technique [0002] The former Soviet scientist V.G.Veselago predicted in 1968 that when the dielectric constant ε and magnetic permeability μ of the medium are negative at the same time, its refractive index will become negative. This kind of medium in which ε and μ are negative at the same time was named by J.A. Kong of the Massachusetts Institute of Technology, and its Chinese name is "heterotropic medium". In 2001, D.R.Smith et al. of the University of California, San Diego, based on the research results of J.B.Pendry of the Imperial College of Technology in the United Kingdom, that is: a medium with a negative dielectric constant ε can be constructed with an array of thin metal rods (Rod), and an open-circuit ring The resonator (SRR: Split-Ring Resonator) array can construct a medium with negative magnetic permeability μ, and for the first time constructs an artifi...

Claims

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Application Information

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IPC IPC(8): G02F1/00H01Q15/02
Inventor 陈红胜冉立新章献民孔金瓯
Owner ZHEJIANG UNIV