Research Article
Complex Permittivity Measurements of Textiles and Leather in a Free Space: An Angular-Invariant Approach
Table 4
Imaginary part of the permittivity evaluated for the textileβs samples: and different incidence angles .
| | Incidence angle, degrees | Sample no. 1 (cotton jeans) | Sample no. 2 | Sample no. 3 | Sample no. 4 | Sample no. 5 | Sample no. 6
(wool scarf) | Sample no. 7
(stock-inet) | Sample no. 8 (satin) |
| | 5 | 0.0715 | 0.033 | 0.07 | 0.041 | 0.065 | 0.133 | 0.054 | 0.074 | | 10 | 0.0633 | 0.029 | 0.057 | 0.028 | 0.06 | 0.13 | 0.057 | 0.072 | | 15 | 0.0603 | 0.0103 | 0.06 | 0.038 | 0.045 | 0.134 | 0.041 | 0.071 | | 20 | 0.0634 | 0.033 | 0.062 | 0.043 | 0.048 | 0.145 | 0.042 | 0.072 | | 25 | 0.071 | 0.0397 | 0.065 | 0.044 | 0.052 | 0.158 | 0.054 | 0.072 | | 30 | 0.0781 | 0.011 | 0.068 | 0.044 | 0.061 | 0.159 | 0.076 | 0.073 | | 35 | 0.074 | 0.011 | 0.071 | 0.044 | 0.072 | 0.159 | 0.1 | 0.074 | | 40 | 0.079 | 0.019 | 0.08 | 0.043 | 0.077 | 0.161 | 0.119 | 0.077 | | 45 | 0.0858 | 0.06 | 0.085 | 0.044 | 0.089 | 0.172 | 0.126 | 0.08 | | 50 | 0.0866 | 0.065 | 0.069 | 0.047 | 0.092 | 0.175 | 0.13 | 0.086 |
| | Averaged, | 0.073 | 0.031 | 0.068 | 0.042 | 0.066 | 0.15 | 0.08 | 0.075 | | Standard deviation | 0.0092 | 0.0222 | 0.0097 | 0.0056 | 0.0172 | 0.0162 | 0.0356 | 0.0049 |
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