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2.5D braided structure-based dual-band small-sized frequency selection surface

A frequency-selective surface and dual-band technology, applied in the field of wireless communication and antenna, can solve the problems of small electrical length and insufficient miniaturization, and achieve the effect of increasing electrical length, improving miniaturization effect, and reducing equivalent electrical size

Active Publication Date: 2018-07-13
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the patch on the passive resonant unit adopts a planar structure, the electrical length increased by the bending structure is small, and the degree of miniaturization is not high enough.

Method used

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  • 2.5D braided structure-based dual-band small-sized frequency selection surface
  • 2.5D braided structure-based dual-band small-sized frequency selection surface
  • 2.5D braided structure-based dual-band small-sized frequency selection surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to figure 1 , a dual-band miniaturized frequency selective surface based on a 2.5D braided structure, including M×N frequency selective surface units arranged periodically, M=20, N=20. The passive resonant unit is a regular hexagonal prism unit, and the frequency selection surface composed of it is a honeycomb structure.

[0037] refer to figure 2 , the frequency selective surface unit includes a dielectric plate 1 with a regular hexagonal cross-sectional shape, a first metal patch 2 printed on the upper surface of the dielectric plate 1 and a second metal patch 3 on the lower surface, and a metallized via hole 4 ,in:

[0038] The dielectric plate 1 has a side length of P=5mm, a thickness of h=1.5mm, and a relative permittivity of 4.4.

[0039] The first metal patch 2 has a structure such as image 3 As shown, it consists of a regular hexagonal patch 21 and six first strip groups 22. The regular hexagonal patch 21 is located at the center of the upper surfac...

Embodiment 2

[0048] The structure of this example is the same as that of Example 1, and only the following parameters have been adjusted:

[0049] M×N frequency selective surface units arranged periodically, M=6, N=6; the side length of the dielectric plate 1 is P=4mm, and the thickness h=2mm; the side length of the regular hexagonal patch 21 is S=0.5mm.

Embodiment 3

[0051] The structure of this example is the same as that of Example 1, and only the following parameters have been adjusted:

[0052] M×N frequency selective surface units arranged periodically, M=10, N=10; the side length of the dielectric plate 1 is P=8mm, and the thickness h=2.5mm; the side length of the regular hexagonal patch 21 is S=1.5mm .

[0053] Effect of the present invention can be further illustrated in conjunction with the following simulation results:

[0054] 1. Simulation content

[0055] Utilize commercial simulation software HFSS_17.0 to carry out simulation calculation to the reflection coefficient of above-mentioned embodiment 1, the result is as follows Figure 8 shown.

[0056] 2. Simulation results

[0057] refer to Figure 5 , with S 11 ≤-10dB is the standard, and the bandwidth of the dual-band frequency selection surface in embodiment 1 is 2.05-2.52GHz at low frequencies, and the resonance point is at 2.3GHz; the bandwidth of the frequency selec...

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Abstract

The invention provides a 2.5D braided structure-based dual-band small-sized frequency selection surface, and aims to improve the miniaturization effect of the dual-band small-sized frequency selectionsurface. The frequency selection surface comprises M*N passive resonant units, wherein each passive resonant unit consists of a dielectric plate, a first metal patch printed on the upper surface of the dielectric plate, a second metal patch printed on the lower surface of the dielectric plate and metalized via holes; the first metal patch consists of a regular hexagonal patch and six rotary and symmetrical first stripe groups; the second metal patch consists of six rotary and symmetrical second stripe groups; each stripe in the second stripe group is positioned in a gap in the corresponding position in the lower surface of each stripe in the first stripe group; the stripes in the first metal patch and the second metal patch are connected through the metalized via holes which run through the dielectric plate to form the 2.5D braided structure. The equivalent electrical dimensions of the passive resonant units on the dual-band small-sized frequency selection surface are reduced, so thatthe dual-band small-sized frequency selection surface can be used for the fields of communication and radar.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a frequency selective surface, in particular to a dual-band miniaturized frequency selective surface based on a 2.5D braided structure, which can be used in the technical field of wireless communication. Background technique [0002] In the field of antennas, 2.5D structure refers to a three-dimensional structure in which the structural content on the horizontal plane can be fully represented by two in-plane coordinate axes, and the structure in the vertical plane can be fully represented by one in-plane coordinate axis. Compared with the planar structure, the 2.5D structure has a higher space utilization rate and can be applied to the design of frequency selective surfaces. [0003] The frequency selective surface can be regarded as a kind of spatial filter, which is a periodic array structure composed of passive resonant units, which has frequency selection characteristics for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0026H01Q15/0053
Inventor 姜文崔岳张哲洪涛龚书喜
Owner XIDIAN UNIV
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