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A branch-loaded three-band composite microwave absorbing structure based on frequency selective surface

A frequency selective surface, three-band technology, applied in electrical components, antennas, etc., can solve the problems of angular stability and poor wave absorption performance, and achieve the effect of improving wave absorption performance, improving absorption effect, and increasing electrical length.

Inactive Publication Date: 2018-12-25
成都邑电信息技术服务有限公司
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AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is: the present invention provides a tri-band composite wave-absorbing structure based on a frequency selective surface, which solves the poor angular stability and wave-absorbing performance of the cross-shaped structure in the existing frequency selective surface, square The problem of only single-band absorption of the ring structure

Method used

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  • A branch-loaded three-band composite microwave absorbing structure based on frequency selective surface
  • A branch-loaded three-band composite microwave absorbing structure based on frequency selective surface
  • A branch-loaded three-band composite microwave absorbing structure based on frequency selective surface

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Embodiment 1

[0034] Such as Figure 1-4 As shown, a branch-loaded three-band composite absorbing structure based on a frequency selective surface includes an upper dielectric layer 1, a frequency selective surface 2 and a lower dielectric layer 3 arranged in sequence from top to bottom, and the frequency selective surface 2 The passive resonant unit includes a three-band absorbing structure and a square ring patch 4 that absorbs specific waves, and the square ring patch 4 is arranged on the three-band absorbing structure.

[0035] The three-band absorbing structure comprises four Jerusalem cross-shaped patches 6 with arms removed and perpendicular branches 5. The square annular patch 4 is centered with the Jerusalem cross-shaped patch, and the four Jerusalem cross-shaped patches The rectangular part of the patch removal arm is connected to the four ends of the branch 5 respectively.

[0036] The resistance of the frequency selective surface 2 is 11.0 ohm / sq, and the length of the passive ...

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Abstract

The invention discloses a branch-loaded three-band composite microwave absorbing structure based on a frequency selective surface, belonging to the field of electromagnetic field and microwave communication. An upper dielectric layer, a frequency selection surface and a lower dielectric layer sequentially are arranged from top to bottom; a passive resonance unit of the frequency selective surfacecomprises a three-band absorbing structure and a square ring patch for absorbing a specific wave, the square ring patch being arranged on the three-band absorbing structure, the three-band absorbing structure comprises an arm-removed rectangular Jerusalem cross-shaped patch and a branch perpendicular to each other, the square ring patch and the Jerusalem cross-shaped patch are arranged in a centercoinciding manner, and the arm-removed rectangular portion of the Jerusalem cross-shaped patch is connected with four end points of the branch. The invention solves the problems that the angular stability and the microwave absorption performance of the cross-shaped structure in the existing frequency selective surface are poor, and the square ring structure can only absorb single frequency bands,and achieves the effects of improving the angular stability and absorbing waves in three frequency bands.

Description

technical field [0001] The invention belongs to the field of electromagnetic field and microwave communication, in particular to a branch-loaded tri-band composite wave-absorbing structure based on a frequency selective surface. Background technique [0002] Frequency selective surface is widely used in stealth materials and new microwave equipment structures due to its good electromagnetic characteristics. It has frequency selective characteristics for electromagnetic waves with different operating frequencies, polarization states and incident angles. Parameters such as and incident angle can guarantee the quality of signal transmission in the actual field. [0003] The traditional cross-shaped frequency selection surface structure, because the bandwidth of the commonly used structure is too large, it is easy to cause overlap with adjacent bands, causing information interference and affecting the quality of communication; therefore, when the same polarized wave is incident ...

Claims

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Application Information

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IPC IPC(8): H01Q17/00H01Q15/00
CPCH01Q15/0013H01Q17/007
Inventor 韩旭丁帅
Owner 成都邑电信息技术服务有限公司
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