2008
DOI: 10.1049/iet-map:20070235
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Abstract: -A free wave, transmission only technique for the determination of complex permittivity in the mm wave band 14 -40 GHz of planar samples of textiles is presented.W ith this method accurate alignment of source and detector horns is not required and time gating methods to reduce or remove standing wave interference between horns is replaced by a data smoothing process. Transmittance measurements are taken at discrete angles of incidence ( 0 to 65 degrees) for TE ( s) polarised mm waves and the data is then smoot… Show more

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Cited by 36 publications
(29 citation statements)
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“…In addition, the ability of the fibres to absorb moisture must also be considered in the characterization of the dielectric behaviour of textiles, as will be explained further in Section 2.4. Thus, the accurate measurement of dielectric characteristics of textiles is challenging and different experimental techniques have been used, such as the Cavity Perturbation Method [4,10], MoM-segment method [9], Resonance Method [21], Free Space Method [24] and Transmission Line Method [2527]. Among these techniques, the simplest ones and thus very promising ones are the techniques based on the measurement of the behaviour of transmission lines [2527].…”
Section: Important Features Of Textile Materials In the Design Of Weamentioning
confidence: 99%
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“…In addition, the ability of the fibres to absorb moisture must also be considered in the characterization of the dielectric behaviour of textiles, as will be explained further in Section 2.4. Thus, the accurate measurement of dielectric characteristics of textiles is challenging and different experimental techniques have been used, such as the Cavity Perturbation Method [4,10], MoM-segment method [9], Resonance Method [21], Free Space Method [24] and Transmission Line Method [2527]. Among these techniques, the simplest ones and thus very promising ones are the techniques based on the measurement of the behaviour of transmission lines [2527].…”
Section: Important Features Of Textile Materials In the Design Of Weamentioning
confidence: 99%
“…Wovens and knits with electric surface resistivity below 1 Ω/□ are commercially available (e.g., Less EMF Inc. at http://www.lessemf.com or Shieldex Trading at http://www.shielextrading.net) and have been successfully used [2,24,26]. However, knits may present higher anisotropy than wovens, showing different electric surface resistance along the longitudinal and the transversal directions and this anisotropy may increase with the knit deformation.…”
Section: Important Features Of Textile Materials In the Design Of Weamentioning
confidence: 99%
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“…The tissue properties listed in Tables 8 and 9 have been chosen according to the database developed in [62]. In some simulations, the thickness of an additional layer of clothing is 1 mm (if not specified) with a relative complex permittivity of 1.6 + j 0.06, which is estimated from the complex permittivity of denim measured at 40 GHz [78]. T blood is 37 °C and T air is 23 °C in the simulation.…”
Section: Mmwave Effects On Skinmentioning
confidence: 99%
“…This research line is only starting, but a lot of works have been performed in the last years [3]- [7]. The electromagnetic characterization of various fabrics has been attempted by some researches [8]. Moreover the design, construction and experimental testing of new prototypes are welcome in the literature.…”
Section: Introductionmentioning
confidence: 99%