Research Article
Design and Study of an mmWave Wearable Textile Based Compact Antenna for Healthcare Applications
Table 9
Free space performance comparison among different textile substrates.
| | Substrate | Relative permittivity | Thickness (mm) | Return loss magnitude at 60 GHz (dB) | Bandwidth (GHz) | Gain (dBi) | Radiation efficiency (%) |
| | Cotton | 1.63 | 1.5 | −21.20 | — | 6.74 | 93.30 | | Jeans | 1.7 | 1 | −20.46 | — | 5.96 | 94.78 | | Denim | 1.87813 | 1.5 | −15.35 | — | 6.65 | 92.67 | | Silk | 1.75 | 1.16 | −27.52 | — | 5.50 | 94.01 | | Tween | 1.69 | 1.37 | −25.10 | — | 6.20 | 93.56 | | Panama | 2.12 | 1.04 | −31.62 | — | 5.58 | 93.81 | | Felt | 1.38 | 1.38 | −19.80 | — | 5.77 | 94.47 | | Moleskin | 1.45 | 1.17 | −20.81 | — | 5.70 | 94.96 | | 100% polyester | 1.9 | 1.5 | −14.92 | — | 6.62 | 92.59 | | Quartzel fabric | 1.95 | 1.5 | −13.80 | — | 6.55 | 93.12 | | Cordura/Lycra | 1.5 | 0.5 | −15.05 | — | 6.33 | 96.61 |
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