On the Design and Performance Analysis of Flexible Planar Monopole Ultra-Wideband Antennas for Wearable Wireless Applications

Table 1

Properties of the flexible substrates.

Substrate	Dielectric constant (ɛr)	Loss tangent (δ)	Thickness (T) (mm)	Young’s modulus (MPa)
Polyester	1.9	0.0045	0.99	72.9
Polyamide	3.5	0.0027	0.563	275
Denim	1.7	0.085	0.675	75.75
Teslin	2.2	0.0145	0.712	4.38