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Waveguide device based on metamaterial

A waveguide device and metamaterial technology, applied in the field of electromagnetic wave propagation, can solve the problems of original wave interference, damage to the emission source, and affect the propagation efficiency, etc., to achieve the effect of reducing interference, small reflection, and high transmission

Active Publication Date: 2012-07-18
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology

However, after the waveguide is filled with a medium, because the impedance of the air and the filled medium are different (that is, the impedance does not match), the electromagnetic wave propagating in the air will reflect on the surface of the filled medium when it encounters the filled medium, which not only affects the propagation efficiency , and the reflected wave will interfere with the original wave, and even damage the emission source in severe cases

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  • Waveguide device based on metamaterial
  • Waveguide device based on metamaterial
  • Waveguide device based on metamaterial

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Embodiment Construction

[0020] Such as figure 1 As shown, the metamaterial-based waveguide device 9 provided by the present invention includes a hollow waveguide 10 and a separator 20 placed in the waveguide 10 to separate the inner space of the waveguide 10 into two sections. . Generally, the waveguide 10 is a metal tube; and the media filled in the waveguide 10 on both sides of the separator 20 are different. In this embodiment, one side of the spacer 20 is filled with air in the waveguide 10 , and water is filled in the other side of the spacer 20 as a wave-absorbing load. figure 1 The spacer 20 shown in is placed obliquely, that is, it forms an angle less than 90 degrees with the direction of the central axis A-A of the waveguide 10, so that the contact area between the filling medium and the spacer 20 can be increased, Allow electromagnetic waves to spread over a larger area and improve propagation efficiency. In fact, the separator 20 can also be placed vertically, such as perpendicular to ...

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Abstract

The invention provides a waveguide device based on a metamaterial. The waveguide device comprises a waveguide tube and a separating piece arranged in the waveguide tube for separating the internal space of the waveguide tube into two segments. The separating piece is made of the metamaterial, and the impedance of the metamaterial is equal to or close to the impedance of the air, and therefore, when an electromagnetic wave enters the separating piece of the metamaterial from the air, the reflection is low, the transmission is high, the interference to an incoming wave is reduced, and an emission source can not be damaged due to the reflection.

Description

technical field [0001] The present invention relates to electromagnetic wave propagation and, more particularly, to a waveguide arrangement. Background technique [0002] A waveguide is an important way of electromagnetic wave propagation. In practice, it refers to a waveguide that allows electromagnetic waves to propagate efficiently. In some applications, in order to reduce the size of the waveguide, people often fill the waveguide with dielectric. However, after the waveguide is filled with a medium, because the impedance of the air and the filled medium are different (that is, the impedance does not match), the electromagnetic wave propagating in the air will reflect on the surface of the filled medium when it encounters the filled medium, which not only affects the propagation efficiency , and the reflected wave will interfere with the original wave, and even damage the transmitting source in severe cases. Contents of the invention [0003] Aiming at the above-menti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/00
Inventor 刘若鹏赵治亚方小伟杨树坤周添李星昆
Owner KUANG CHI INST OF ADVANCED TECH
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