Conformal Load-Bearing Spiral Antenna on Conductive Textile Threads

Zhong, Jingni; Kiourti, Asimina; Sebastian, Tom; Bayram, Y.; Volakis, John L.

doi:10.1109/lawp.2016.2570807

Cited by 77 publications

(40 citation statements)

References 15 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the fabrication of the radiating elements of a textile antenna, it is possible to use the inkjet printing [ 26 ], embroidery [ 27 ] or cut-transfer-glueing process [ 2 ]. The choice usually is made on the base of the materials used for the radiating elements.…”

Section: Design Fabrication and Measurement Of Small Antennas Formentioning

confidence: 99%

Small Antennas for Wearable Sensor Networks: Impact of the Electromagnetic Properties of the Textiles on Antenna Performance

Atanasova

Atanasov

2020

Sensors

View full text Add to dashboard Cite

The rapid development of wearable wireless sensor networks (W-WSNs) has created high demand for small and flexible antennas. In this paper, we present small, flexible, low-profile, light-weight all-textile antennas for application in W-WSNs and investigate the impact of the textile materials on the antenna performance. A step-by-step procedure for design, fabrication and measurement of small wearable backed antennas for application in W-WSNs is also suggested. Based on the procedure, an antenna on a denim substrate is designed as a benchmark. It demonstrates very small dimensions and a low-profile, all while achieving a bandwidth (|S11| < −6 dB) of 285 MHz from 2.266 to 2.551 GHz, radiation efficiency more than 12% in free space and more than 6% on the phantom. Also, the peak 10 g average SAR is 0.15 W/kg. The performance of the prototype of the proposed antenna was also evaluated using an active test. To investigate the impact of the textile materials on the antenna performance, the antenna geometry was studied on cotton, polyamide-elastane and polyester substrates. It has been observed that the lower the loss tangent of the substrate material, the narrower the bandwidth. Moreover, the higher the loss tangent of the substrate, the lower the radiation efficiency and SAR.

show abstract

Section: Design Fabrication and Measurement Of Small Antennas Formentioning

confidence: 99%

Small Antennas for Wearable Sensor Networks: Impact of the Electromagnetic Properties of the Textiles on Antenna Performance

Atanasova

Atanasov

2020

Sensors

View full text Add to dashboard Cite

show abstract

“…Conductive threads, as the basic interconnect element that are inherently flexible has enabled the realization of metallic structures on conventional fabrics. Antennas are typical examples for which the whole structure can be implemented using only conductive threads [20]. Similar to antennas, metamaterials based on SRRs [23] and radio frequency identification (RFID) tags [24] are usually realized using a few layers of metallic structures on fabrics for sensing and electromagnetic signal conditioning applications.…”

Section: Introductionmentioning

confidence: 99%

Embroidered Rectangular Split-Ring Resonators for the Characterization of Dielectric Materials

et al. 2020

View full text Add to dashboard Cite

In this paper, we report an embroidered rectangular split-ring resonator (SRR) operating at S band for material characterization based on the differences in dielectric parameters. We designed, fabricated and characterized SRR sensors on a conventional fabric that can be conformally attached over the surface of samples under investigation. The structures are made of conductive threads and can be embroidered on any dielectric fabric at low cost using conventional embroidery methods. We have demonstrated material characterization capability of the sensors using a specific design with a length of 60 mm and a width of 30 mm. We wrapped the sensors on low-density polyethylene (LDPE) bottles filled with deionized (DI) water and common solvents (ethanol, methanol, isopropanol and acetone) in our experiments. We measured the nominal resonant frequency of a specific sensor wrapped around an empty bottle as 2.07 GHz. The shifts in resonant frequencies when the bottle was filled with the solvents follow the dielectric constants of the solvents.

show abstract

“…Antennas fabricated using the SIW method is shown in Figure 9 . A novel fleece fabric WLAN antenna for wearable applications such as sportswear and emergency worker outfits was reported previously [ 123 ].…”

Section: Fabrication Techniques For Flexible Antennasmentioning

confidence: 99%

Flexible Antennas: A Review

et al. 2020

View full text Add to dashboard Cite

The field of flexible antennas is witnessing an exponential growth due to the demand for wearable devices, Internet of Things (IoT) framework, point of care devices, personalized medicine platform, 5G technology, wireless sensor networks, and communication devices with a smaller form factor to name a few. The choice of non-rigid antennas is application specific and depends on the type of substrate, materials used, processing techniques, antenna performance, and the surrounding environment. There are numerous design innovations, new materials and material properties, intriguing fabrication methods, and niche applications. This review article focuses on the need for flexible antennas, materials, and processes used for fabricating the antennas, various material properties influencing antenna performance, and specific biomedical applications accompanied by the design considerations. After a comprehensive treatment of the above-mentioned topics, the article will focus on inherent challenges and future prospects of flexible antennas. Finally, an insight into the application of flexible antenna on future wireless solutions is discussed.

show abstract

Conformal Load-Bearing Spiral Antenna on Conductive Textile Threads

Cited by 77 publications

References 15 publications

Small Antennas for Wearable Sensor Networks: Impact of the Electromagnetic Properties of the Textiles on Antenna Performance

Small Antennas for Wearable Sensor Networks: Impact of the Electromagnetic Properties of the Textiles on Antenna Performance

Embroidered Rectangular Split-Ring Resonators for the Characterization of Dielectric Materials

Flexible Antennas: A Review

Contact Info

Product

Resources

About