Table 2.

Passive RFID tag models and materials and technologies for building UHF antennas.

Model.	Materials for UHF Antenna	Technology for UHF Antenna Building & Details
M1	Electroconductive paint	Screen printing process on textile media; The length of the contour: λ/2 = 172 mm for fmed = 866.5 MHz; the width of the contour l = 1 mm.
M2	Copper conductor plated with silver	Modeling of silver-plated copper wire and fixing with adhesive on textile support; The diameter of conductor is d = 0.25 mm; the insulation of the conductor is achieved with teflon.
M3	Electroconductive textile thread	Electroconductive textile wire modeling and gluing on textile support; The round filament with polyamide core 6.6 and 99% silver metallic coating, wire resistance is R = 30 Ω/m.
M4	Multifilament stainless steel wire	Modeling multifilament steel wire fixed on the textile support by embroidering; The stainless steel wire has 275 filaments with the diameter d = 12 μm, the insulation of the wire being made of teflon or polyester.