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Device and method for adjusting working frequency band of frequency selective surface

A technology of frequency selection surface and working frequency band, which can be applied to antennas, electrical components, etc., and can solve the problems of difficulty in manufacturing, high cost, and complex structure.

Pending Publication Date: 2022-07-29
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the preparation of the existing frequency selective surface is completed, the characteristics of the working frequency bands such as the absorption frequency band, the transmission frequency band, and the reflection frequency band have been determined due to the fixed patterns arranged periodically on it. To expand or change the work of the frequency selective surface The scope of application of the frequency band, the controllable frequency selection surface has appeared in the prior art. This technology generally realizes frequency selection by integrating controllable electronic components such as variable capacitors in the electromagnetic structure, or by mechanically adjusting the geometric parameters of the structure. The adjustment of the surface working frequency band, obviously, the existing controllable frequency selection surface structure is relatively complicated, and the manufacturing difficulty and cost are also high

Method used

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  • Device and method for adjusting working frequency band of frequency selective surface
  • Device and method for adjusting working frequency band of frequency selective surface
  • Device and method for adjusting working frequency band of frequency selective surface

Examples

Experimental program
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Effect test

Embodiment 1

[0033] refer to figure 1 , the dielectric substrate 10 includes two first surfaces 11 and second surfaces 12 that are away from each other. In this embodiment, a number of first conductive units 21 are periodically arranged on the first surface 11 of the dielectric substrate 10 . The first conductive unit 21 can be a strip-shaped structure, and a plurality of first conductive units 21 are arranged in parallel on the first surface 11 at the same distance by printing. At this time, a frequency is formed on the first surface of the dielectric substrate 10. Select the surface. The dielectric constant of the dielectric substrate 10 can be selected according to the operating frequency range of the frequency selection surface.

[0034]The adjusting device provided in this embodiment is used to adjust the above-mentioned frequency selective surface, and mainly includes a plurality of second conductive units 22 and a high-voltage pulse power supply 40 .

[0035] A number of second co...

Embodiment 2

[0042] refer to figure 2 The only difference between the second embodiment and the first embodiment is that the second conductive unit 22 is arranged on the second surface 12 of the dielectric substrate 10 away from the first surface 11, and the high voltage pulse power supply 40 does not supply the first conductive unit 21. . When the second conductive unit 22 is powered on, the second surface 12 of the dielectric substrate 10 also forms a frequency selective surface.

[0043] After that, when the high-voltage pulse power supply 40 is powered on, the first surface 11 and the second surface 12 of the dielectric substrate 10 simultaneously form a frequency selective surface with a controllable operating frequency band.

[0044] see Figure 5 and Image 6 , the two respectively show the structure provided by this embodiment, when the dielectric constant of the dielectric substrate 10 is 4.3, and the first conductive unit 21 and the second conductive unit 22 are made of metal ...

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Abstract

The invention discloses a device and method for adjusting the working frequency band of a frequency selective surface, the frequency selective surface is formed by periodically arranging a plurality of first conductive units on the first surface of a dielectric substrate at intervals, and the adjusting device mainly comprises a plurality of second conductive units and a high-voltage pulse power supply, wherein the second conductive units correspond to the first conductive units and are arranged on the second surface of the dielectric substrate or in the dielectric substrate, the second conductive units and the first conductive units corresponding to the second conductive units are staggered in position, and the high-voltage pulse power supply is communicated with the first conductive units and the second conductive units. The high-voltage pulse power supply is arranged on the first surface to form a current loop, a plasma layer is formed on the first surface or on the first surface and the second surface through dielectric barrier discharge, and the dielectric property of the plasma layer can be adjusted by adjusting the electrical parameters of the high-voltage pulse power supply, so that the working frequency band of the frequency selective surface is changed.

Description

technical field [0001] The invention relates to the technical field of frequency selective surfaces, in particular to a frequency selective surface operating frequency band adjustment device and adjustment method. Background technique [0002] Frequency Selective Surface (FSS for short) is an artificial electromagnetic structure, which is formed by periodic arrangement of conductive materials such as metal and graphite on the surface of the dielectric substrate by printing, etching, etc., which can transmit or reflect specific frequency bands respectively. of electromagnetic waves. After the existing frequency selective surface is prepared, because the periodically arranged patterns on it are fixed, the characteristics of its working frequency band such as absorption frequency band, transmission frequency band, reflection frequency band, etc. have been determined. The applicable range of the frequency band, the controllable frequency selection surface appears in the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/002
Inventor 林麒刘震刘汝兵梁翊超彭俊
Owner XIAMEN UNIV
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