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Frequency-selective wave-absorbing metasurface for realizing high and low frequency integrated test environment

A test environment and metasurface technology, applied to antennas, electrical components, etc., can solve the problems of high processing cost of waveguide arrays, bulky waveguide arrays, and restrictions on practical applications, and achieve the effects of saving test costs, easy implementation, and saving test sites

Active Publication Date: 2021-12-14
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to market research, it is found that the processing cost of the waveguide array is quite high, whether it is direct machining or mold processing; on the other hand, the waveguide array is relatively heavy and difficult to install, which limits the practical application of this solution

Method used

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  • Frequency-selective wave-absorbing metasurface for realizing high and low frequency integrated test environment
  • Frequency-selective wave-absorbing metasurface for realizing high and low frequency integrated test environment
  • Frequency-selective wave-absorbing metasurface for realizing high and low frequency integrated test environment

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] The overall integrated test environment realized by the present invention is as follows: figure 1 As shown, the size of the reverberation chamber is 1.50m×1.44m×0.92m, in which two mechanical stirrers (one horizontal and one vertical) and one mechanical turntable are installed. A standard horn antenna is selected as the communication antenna, and the frequency-selective absorbing metasurface is installed on two of the cavity walls. figure 1 Here we show us the basic composition of the environment integration test environment.

[0027] in the attached figure 2 The structure of each layer of the frequency-selective wave-absorbing metasurface unit is shown in , in which the top layer and the bottom layer are respectively the wave-absorbing structure A, and the bottom layer is the transmission structure B, with a support structure between them. The top...

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Abstract

The invention discloses a frequency-selective wave-absorbing metasurface for realizing a low-frequency reverberation chamber and high-frequency quasi-darkroom integrated test environment. The wave-absorbing metasurface comprises a wave-absorbing metasurface body, the wave-absorbing metasurface body is formed by tightly and periodically arranging metasurface units, and each metasurface unit comprises a wave-absorbing structure A and a transmission structure B; in a low-frequency band, the transmission structure B and the wave absorbing structure A are in a transmission state, and the transmission structure B belongs to a resonance state; and in a high-frequency band, the wave-absorbing structure A is in a resonance state and consumes energy through a resistor, and the transmission structure B is in a reflection state and serves as a metal plate to enhance the wave-absorbing capacity of the whole structure. The frequency-selective wave-absorbing metasurface has the advantages of being small in occupied space, low in manufacturing cost, easy to machine and the like.

Description

technical field [0001] The invention belongs to the technical field of radio reverberation chambers, and in particular relates to a frequency-selective wave-absorbing metasurface for realizing an integrated test environment of a low-frequency reverberation chamber and a high-frequency quasi-dark chamber. Background technique [0002] In the 3GPP agreement, the overall spectrum resources of 5G can be divided into two frequency bands FR, of which FR1 is 450MHz-6GHz, which is what we call the sub-6GHz communication frequency band. The advantages of FR1 are low frequency, strong diffraction ability, and good coverage effect. It is currently the main frequency band for 5G. FR2 is 24.25GHz-52.60GHz, which is what we call the millimeter wave communication frequency band, which is the extended frequency band of 5G. FR2 has the advantages of ultra-large bandwidth, clean spectrum, and less interference. It is the follow-up expansion frequency band of 5G. Because the propagation char...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0086H01Q17/00
Inventor 陈晓明田兴武唐家志
Owner XI AN JIAOTONG UNIV
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