Research on 3D periodic structure velvet fabric and its frequency response characteristics

Cheng, Huanhuan; Xiao, Heming; Shi, Meiwu; Wang, Qun; Wang, Ni

doi:10.1177/0040517515596927

Cited by 12 publications

(14 citation statements)

References 22 publications

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“…During use, the base medium will be the main bearer for external force, especially the elastic base medium with large deformation. The deformation of the substrate medium will cause changes in the size and other dimensions of the various scale structures fixed thereon, further leading to changes in electromagnetic response characteristics [17]. It can be seen that the electromagnetic response of the 3D FSF can be regulated by deformation.…”

Section: The Frequency Selective Textile Materials With Three-dimensimentioning

confidence: 99%

Electromagnetic Function Textiles

Xiao¹,

Shi²,

Chen³

2020

Electromagnetic Materials and Devices

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This chapter is about the electromagnetic (EM) functional textiles. There are three parts including the EM properties of the textiles, the EM functional textile materials, and the application of the EM functional textiles. In the first part, we outline the textile materials including the fibers, yarns, and fabrics and their EM properties. Generally, textiles are poor in EM properties such as low conductivity and low dielectric and magnetic properties. In the second part, EM functional textiles are defined and the manufacture method is stated. The EM functional fibers and yarns and fabrics can be got by various methods; the EM properties can be improved to a high level. In the third part, several typical EM functional textiles are introduced. These textiles are antistatic textiles, EM shielding textiles, EM scattering textiles, and two-dimensional and three-dimensional frequency selective textiles. The principle, the processing methods, the properties of the static electro or EM shielding or EM scattering or frequency selection, and so on are described one by one in detail.

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Section: The Frequency Selective Textile Materials With Three-dimensimentioning

confidence: 99%

Electromagnetic Function Textiles

Xiao¹,

Shi²,

Chen³

2020

Electromagnetic Materials and Devices

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“…The analysis is as follows. Velvet inclination angle θ: Cheng et al [22] analyzed that the resonance point moved to the lower frequency with an increase of the velvet height or the unit length L [22]. However, the increase of velvet inclination angle θ leads to two results, the equivalent height of the unit decreasing and the velvet equivalent length in the electric field increases.…”

Section: The Influence Of the Velvet Assembling Numbermentioning

confidence: 99%

“…Compared with the planar FSS, the U-shaped velvet FSF has a 3D design, which increases design parameters. The velvet FSF would have more flexible lightweight characteristics and more structure patterns, which a conventional FSS does not have [12,22].…”

Section: Introductionmentioning

confidence: 99%

“…The parameter design of electromagnetic functional fabric can be divided into four parts, including the yarn material, the unit shape, the grid array and the electromagnetic wave incidence condition. In the unit design part, [22] have already explored the influence of the velvet height, the unit cell size, the bottom connectivity on frequency response characteristics. In this study, the structure parameters of other unit design, such as planar and 3D shape, the linear density of the conductive ply yarn, the inclination angle of velvet and different U-shaped connective conditions, are continued to be studied.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Unit Structure in Frequency Selective Fabric Fabricated by U-Shaped Velvet

Wang¹,

Xiao²,

Cheng³

et al. 2017

JTEFT

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In this study, the three-dimension (3D) frequency selective fabrics (FSFs) fabricated by U-shaped velvet, using copper wires or silver filaments as the conductive unit material, were prepared. Specimens with different unit structure parameters were experimented and analyzed. Compared to FSFs with dipole unit structure, the velvet fabrics with the same unit length have two resonance peaks in the test frequency range. With an increase of inclination angle of velvet, the resonance frequency is changed slightly, accompanied by a trend of decreasing first and then stabilizing. And the resonance frequency of the FSF would shift slowly to higher frequency under the condition of increasing the linear density of conductive ply yarns. If the total length of U-shaped unit on the bottom is greater, the resonance frequency will go to the lower one. If the total length of U-shaped unit is same, specimens with the different number of unit will have the similar resonance frequencies. This work shows that the unit structure of U-shaped velvet FSFs can be designed with more parameters comparing with planar FSF.

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“…Frequency selective surfaces (FSSs) have been widely studied over the past few decades, which were mainly focused on the design and characterization of new structures, active FSS, and curved or three-dimensional (3D) structures [1][2][3][4]. Traditionally, software simulation and numerical calculation methods were used to predict the transmission characteristics and design the corresponding array structure [5,6].…”

Section: Introductionmentioning

confidence: 99%

Design and Characterization of Periodically Conductive Woven Fabric

Guan

Yang

et al. 2019

Autex Research Journal

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In this paper, a novel kind of electromagnetic (EM) functional textiles is proposed, which show high-pass characteristics as they interact with EM waves. The periodically conductive woven fabric was designed, fabricated, and measured. Specifically, by means of unit cell model building and EM simulation, the theoretical S21 (transmission coefficient) and S11 (reflection coefficient) curves were obtained. A concrete sample was fabricated through weaving process, and its transmission characteristics were measured in the microwave anechoic chamber. The measured and simulated results were highly consistent, demonstrating the validity of design process. Compared with the aluminum foil paper sample, the S21 values of fabricated sample were a little smaller, and the reason could be attributed to yarn crimp and surface roughness. The EM characteristics of fabricated sample under two different polarization modes were slightly different, which was due to the beating-up tension of weaving process. The work could offer new research ideas, and the related products have potential advantages over rigid plates on the account of textile characteristics.

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Research on 3D periodic structure velvet fabric and its frequency response characteristics

Cited by 12 publications

References 22 publications

Electromagnetic Function Textiles

Electromagnetic Function Textiles

Study of the Unit Structure in Frequency Selective Fabric Fabricated by U-Shaped Velvet

Design and Characterization of Periodically Conductive Woven Fabric

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