. 2021 Apr 16;21(8):2820. doi: 10.3390/s21082820

Table 1.

Mean amplitude and standard deviation of the SPs of the three TDs, over the band of 2–3 GHz. Estimated equivalent length and relative electric permittivity.

TD	\|s₁₁\|	\|s₂₂\|	\|s₁₂\| [\|s₂₁\|]	l_eq [mm]	ε_eq
strip-1	0.071 ± 0.025	0.067 ± 0.024	0.928 ± 0.090	584	2.03
strip-2	0.119 ± 0.051	0.114 ± 0.067	0.906 ± 0.027	588	2.06
strip-3	0.076 ± 0.035	0.072 ± 0.029	0.918 ± 0.009	641	2.12