Influence of Dielectric Loss on RF Performance of Microstrip Multi-Resonant Circuits

Table 5

Parameters of the substrates used in fabric-based RF devices. It shows that the dielectric loss tangents of fabric materials vary widely.

Ref.	Substrate material			Thickness (mm)	Frequency (GHz)
[Here]	Denim fabric	2.16	0.114	0.560	1.0-3.0
[20]	Cotton	1.71	0.020	1.090	2.0-2.8
[21]	Cotton/PES	1.64	0.028	2.808	2.0-3.0
[22]	PET	1.20	0.020	1.000	2.45
[23]	Polyamide 66	1.90	0.0098	0.500	2.45
[24]	Kevlar fabric	2.60	0.006	0.590	0.1-1.0