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Enz metamaterial waveguides for large-angle transmission of TM polarized waves

A metamaterial, large-angle technology, applied in the direction of antennas, electrical components, etc., to achieve the effect of easy implementation and simple structure

Active Publication Date: 2020-08-04
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of ENZ metamaterial waveguide that is used for TM polarized wave large-angle transmission, to effectively overcome the technical problem that TM polarized wave presents as incident angle band-stop characteristic in ENZ metamaterial, realize TM polarized electromagnetic wave Efficient Transmission at Large Angle of Incidence from 0° to 80° in ENZ Metamaterials

Method used

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  • Enz metamaterial waveguides for large-angle transmission of TM polarized waves
  • Enz metamaterial waveguides for large-angle transmission of TM polarized waves
  • Enz metamaterial waveguides for large-angle transmission of TM polarized waves

Examples

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Embodiment 1

[0027] Embodiment 1, a TM polarized wave large-angle transmission waveguide with a dielectric constant of 0.01 on the ENZ metamaterial substrate.

[0028] This example includes: a parallel plate waveguide 1 and an ENZ metamaterial substrate 2. The parallel plate waveguide is composed of an upper metal plate 11 and a lower metal plate 12 placed in parallel. The thickness c of the upper metal plate 11 and the lower metal plate 12 is 0.1mm. The distance between them is b=5mm, and the middle part of the two flat plates is provided with an inwardly recessed rectangular groove 3. The length L of the rectangular groove 3 determines the transmission frequency of the TM polarized wave penetrating the ENZ metamaterial, and the length L passes through Determined by the formula f=cN / (2L), where c is the speed of light, N=1, and f is the transmission frequency of the TM polarized wave. Take L=10mm, depth h=2mm, width w=10mm. These rectangular slots form a rectangular wave structure on the...

Embodiment 2

[0029] Embodiment 2, a TM polarized wave large-angle transmission waveguide with a dielectric constant of 0.1 on the ENZ metamaterial substrate.

[0030] The structure of this example is the same as that of Example 1, and the thickness c of the upper metal plate 11 and the lower metal plate 12, and the distance b between the two, the length L of the rectangular groove 3, the depth h, and the width w, these parameters maintain No change, only the following parameters have been changed:

[0031] The thickness t of the ENZ metamaterial substrate 2 is 1 mm, and the loss tangent is 0.02;

[0032] The distance d between the ENZ metamaterial substrate 2 and the rectangular groove is 1 mm.

Embodiment 3

[0033] Embodiment 3, a TM polarized wave large-angle transmission waveguide with a dielectric constant of ENZ metamaterial substrate of 0.005.

[0034] The structure of this example is the same as that of Example 1, and the spacing b between the upper metal plate 11 and the lower metal plate 12, the length L of the rectangular groove 3, the depth h, and the width w, these parameters remain constant, only for The following parameters have been changed:

[0035] The thickness t of the metamaterial substrate 2 is 3mm, and the loss tangent is 0.05,

[0036] The distance d between the metamaterial substrate 2 and the rectangular groove is 4mm,

[0037] The thickness c of the upper metal plate 11 and the lower metal plate 12 is 0.01mm.

[0038] The technical effects of the present invention will be further described in detail below in combination with the results of simulation experiments.

[0039] 1. Simulation conditions:

[0040] The present invention uses CST Microwave Studi...

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Abstract

The invention discloses an ENZ metamaterial waveguide for large-angle transmission of TM polarized waves, which mainly solves the problem that the existing TM polarized incident waves present an incident angle band elimination characteristic on the ENZ metamaterial. The ENZ metamaterial waveguide comprises a discontinuous parallel slab waveguide (1) and ENZ metamaterial substrates (2), wherein theparallel slab waveguide (1) is formed by placing an upper metal slab (11) and a lower metal slab (12) in parallel, a rectangular groove (3) sunken inward is formed in the middle of each of the upperand lower metal slabs, and a rectangular wave structure is formed on the inner surfaces of the upper and lower metal slabs; and a metamaterial substrate having the dielectric constant approaching to zero is placed at each peak of the rectangular wave to form a sandwich structure. The ENZ metamaterial waveguide can transmit TM polarized electromagnetic waves with large incident angles of 0 to 80 degrees in the ENZ metamaterial, is simple in structure, and can be used for large-angle efficient transmission of the TM polarized waves in the ENZ metamaterial.

Description

technical field [0001] The invention belongs to the technical field of microwave devices, and relates to an ENZ transmission guided wave, which can be used for efficient angular transmission of TM polarized waves in ENZ metamaterials. [0002] technical background [0003] Permittivity approaching zero (ENZ) metamaterial is a new type of artificial electromagnetic material with low refractive index, high phase velocity, and near-zero phase shift electromagnetic properties. Based on the electromagnetic properties of ENZ metamaterials, many new electromagnetic devices can be designed, such as the design of ENZ metamaterial polarization filters, etc., while meeting the filtering characteristics of special frequency bands, it can also meet the selection of different polarization types of electromagnetic waves. . [0004] However, the selectivity of ENZ metamaterials for transverse magnetic TM polarized incident waves limits its application. This is because the TM polarized elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q15/24
Inventor 杨锐陈永朝杨佩李佳成高东兴闫诗义雷振亚
Owner XIDIAN UNIV
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