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Double-frequency FSS with close interval frequency response characteristic and unit structure thereof

A technology of interval frequency and response characteristics, applied in the field of dual-frequency FSS and its unit structure, can solve the problems of large resonance response interval, failure to meet FSS requirements, and large size

Active Publication Date: 2020-04-14
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing multi-frequency system, the resonance response interval is too large, which cannot meet the needs of FSS in practical applications; and the existing multi-frequency FSS structural unit size is relatively large, which does not meet the current trend and demand for miniaturized structures

Method used

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  • Double-frequency FSS with close interval frequency response characteristic and unit structure thereof
  • Double-frequency FSS with close interval frequency response characteristic and unit structure thereof
  • Double-frequency FSS with close interval frequency response characteristic and unit structure thereof

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Experimental program
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Embodiment 1

[0038] See figure 1 and figure 2 , figure 1 It is a perspective view of a dual-frequency FFS unit structure with closely spaced frequency response characteristics provided by an embodiment of the present invention; figure 2 It is a side view of a dual-frequency FFS unit structure with closely spaced frequency response characteristics provided by an embodiment of the present invention. The dual-frequency FFS unit structure includes a metal layer 1 and a dielectric substrate 2 , and the metal layer 1 is disposed on the dielectric substrate 2 . In this embodiment, the upper surface of the dielectric substrate 2 has a square structure with a size of 8mm*8mm. In addition, the thickness of the metal layer 1 is in the range of 0.017mm-0.035mm, and the thickness of the dielectric substrate 2 is 1mm. Compared with the existing FFS unit, the size of the dual-frequency FFS unit structure in this embodiment is very small, meeting the current trend of pursuing miniaturization of devi...

Embodiment 2

[0047] On the basis of the above embodiments, this embodiment provides a dual-frequency FFS with closely spaced frequency response characteristics. See Figure 4 , Figure 4 It is a perspective view of a dual-frequency FFS with closely spaced frequency response characteristics provided by an embodiment of the present invention. The dual-frequency FFS includes M×N periodically arranged dual-frequency FFS unit structures as described in Embodiment 1, wherein M and N are integers greater than or equal to 1. In this embodiment, the dual-frequency FFS includes 6×6 unit structures. In other embodiments, the dual-frequency FFS may also include other numbers of unit structures, such as 10×10, 20×20, 40×40 ,even more.

[0048] As mentioned above, the dual-frequency FFS is formed by the periodic arrangement of the dual-frequency FFS unit structure described in the first embodiment, that is, the adjacent dielectric substrates 2 are closely attached. Since the distance between the fou...

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Abstract

The invention discloses a double-frequency FSS with a close interval frequency response characteristic and a unit structure thereof, the unit structure comprises a metal layer and a dielectric substrate, and the metal layer is arranged on the dielectric substrate; wherein the metal layer comprises a bow-shaped annular metal patch and a square annular metal patch, the square annular metal patch surrounds the periphery of the bow-shaped annular metal patch, and the center of the square annular metal patch coincides with the center of the bow-shaped annular metal patch; and the bow-shaped annular metal patch is of a centrosymmetric annular structure formed by connecting a plurality of bow-shaped metal units end to end. The double-frequency FSS comprises M*N unit structures which are arrangedperiodically. The double-frequency FSS has a double-frequency band elimination characteristic, can achieve the band elimination effect at the frequency bands of 5.59-6.51 GHz and 7.43-9.61 GHz underthe depth of -10 dB, has excellent polarization stability and angle stability, is very small in size, and meets the miniaturization requirements of devices.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, and in particular relates to a dual-frequency FSS with closely spaced frequency response characteristics and a unit structure thereof. Background technique [0002] Frequency Selective Surface (FSS) is a single-screen or multi-screen periodic array structure composed of a large number of passive resonant units, which can effectively control the reflection and transmission of electromagnetic waves. When the electromagnetic wave is incident on the frequency selective surface, the performance out of band-pass or band-stop characteristics. A frequency selective surface is essentially a spatial filter. The structure of FSS is mainly composed of a dielectric substrate and a metal array covering the surface of the dielectric. The dielectric substrate mainly plays a supporting role to enhance the mechanical strength of the entire FSS structure, and the metal array makes the...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0013
Inventor 相征李毅任鹏陈瑞洁
Owner XIDIAN UNIV
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