Applying textile materials for the design of antennas for wireless body area networks

Tronquo, Anneleen; Rogier, Hendrik; Hertleer, Carla; Langenhove, Lieva Van

doi:10.1109/eucap.2006.4584573

Cited by 39 publications

(14 citation statements)

References 7 publications

(8 reference statements)

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“…The polyester had the lowest loss tangent compared to the other three textiles that were used for antenna fabrication. Additionally, as shown in [14,15] fleece fabric provides sufficient thickness for an adequate bandwidth. The low permittivity of fleece allows design of textile wearable antennas with large gain and high efficiency which claims fleece fabric as a very good candidate for textile substrate material.…”

Section: Substrate Materials For Wearable Antennasmentioning

confidence: 99%

“…The textile glue showed negligible influence on the sheet resistance since the plated textile is densely woven [27]. In [15] two antennas manufactured by using two different methods of attaching conductive Flectron onto Fleece fabric were considered. The layers in the first antenna were attached to each other by using a glue stick and the layers have been additionally stitched together using non-conducting threads to enhance the robustness of the antenna.…”

Section: Woven or Knitted Conductive Sheetsmentioning

confidence: 99%

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Embroidery and Related Manufacturing Techniques for Wearable Antennas: Challenges and Opportunities

et al. 2014

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This paper will review the evolution of wearable textile antennas over the last couple of decades. Particular emphasis will be given to the process of embroidery. This technique is advantageous for the following reasons: (i) bespoke or mass produced designs can be manufactured using digitized embroidery machines; (ii) glue is not required and (iii) the designs are aesthetic and are integrated into clothing rather than being attached to it. The embroidery technique will be compared to alternative manufacturing processes. The challenges facing the industrial and public acceptance of this technology will be assessed. Hence, the key opportunities will be highlighted.

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Section: Substrate Materials For Wearable Antennasmentioning

confidence: 99%

Section: Woven or Knitted Conductive Sheetsmentioning

confidence: 99%

Embroidery and Related Manufacturing Techniques for Wearable Antennas: Challenges and Opportunities

et al. 2014

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“…Therefore, lowering the dielectric constant increases spatial waves and hence increases the impedance bandwidth of the antenna, allowing the development of antennas with acceptable efficiency and high gain [3,28–30]. Again, one should note that the relative permittivity value changes with the moisture content of the substrate affecting the bandwidth of the antenna [2,29]. …”

Section: Important Features Of Textile Materials In the Design Of Weamentioning

confidence: 99%

“…The higher permittivity of the water drives the performance of the antenna, reducing its resonance frequency [2,6] and bandwidth [9,29,31]. …”

Section: Important Features Of Textile Materials In the Design Of Weamentioning

confidence: 99%

Textile Materials for the Design of Wearable Antennas: A Survey

Salvado

Loss

Gonçalves

et al. 2012

Sensors

342

228

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In the broad context of Wireless Body Sensor Networks for healthcare and pervasive applications, the design of wearable antennas offers the possibility of ubiquitous monitoring, communication and energy harvesting and storage. Specific requirements for wearable antennas are a planar structure and flexible construction materials. Several properties of the materials influence the behaviour of the antenna. For instance, the bandwidth and the efficiency of a planar microstrip antenna are mainly determined by the permittivity and the thickness of the substrate. The use of textiles in wearable antennas requires the characterization of their properties. Specific electrical conductive textiles are available on the market and have been successfully used. Ordinary textile fabrics have been used as substrates. However, little information can be found on the electromagnetic properties of regular textiles. Therefore this paper is mainly focused on the analysis of the dielectric properties of normal fabrics. In general, textiles present a very low dielectric constant that reduces the surface wave losses and increases the impedance bandwidth of the antenna. However, textile materials are constantly exchanging water molecules with the surroundings, which affects their electromagnetic properties. In addition, textile fabrics are porous, anisotropic and compressible materials whose thickness and density might change with low pressures. Therefore it is important to know how these characteristics influence the behaviour of the antenna in order to minimize unwanted effects. This paper presents a survey of the key points for the design and development of textile antennas, from the choice of the textile materials to the framing of the antenna. An analysis of the textile materials that have been used is also presented.

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“…Conductive textiles in the market are provided in the form of either conductive threads or fabrics. For the latter, an antenna is fabricated by attaching a piece of conductive fabric that is trimmed into an antenna shape [5], [6]. Otherwise, antennas with conductive threads can be fabricated by directly sewing them on the clothing for more design freedom [1].…”

Section: Introductionmentioning

confidence: 99%

Radiation Characteristics of Woven Patch Antennas Composed of Conductive Threads

Nguyen

Chung

Lee

2015

IEEE Trans. Antennas Propagat.

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The radiation characteristics of wearable antennas composed of conductive threads are investigated in this work. Various rectangular patch antennas with different thread diameters and intervals are modeled in a full-wave electromagnetic simulation tool by weaving thin conductors emulating conductive threads, and their resonance frequencies, radiation efficiencies, and radiation patterns are then observed. Interestingly, the radiation efficiency increases with a wider interval between the threads when a thicker conductive thread is used. This contrasts with the common assumption that radiation efficiency increases as more conductive materials are included. These results are also validated by experiments on woven patch antennas fabricated with silver-coated threads.

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Applying textile materials for the design of antennas for wireless body area networks

Cited by 39 publications

References 7 publications

Embroidery and Related Manufacturing Techniques for Wearable Antennas: Challenges and Opportunities

Embroidery and Related Manufacturing Techniques for Wearable Antennas: Challenges and Opportunities

Textile Materials for the Design of Wearable Antennas: A Survey

Radiation Characteristics of Woven Patch Antennas Composed of Conductive Threads

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