Transparent Patch Antenna Fabricatedwith Poly(3,4-ethylene dioxythiophene) Polystyrene Sulfonate (PEDOT:PSS) in 2.45 GHz

Abstract

In this research, we present an optical transparent patch antenna fabricated with poly(3,4ethylene dioxythiophene) polystyrene sulfonate (PEDOT:PSS; PP).This patch antenna provides a peak gain at 2.45 GHz.The parameters of the patch antenna are designed on the basis of the transmission line theory.Vector network analyzers can be used to obtain a wide gap of the patch antenna, i.e., a low resonance frequency.In this study, the average transmittance of the patch antenna is higher than 88%, which is measured by ultraviolet-visible (UV/Vis) absorption spectroscopy.To increase the conversion efficiency of the patch antenna, a PP film is annealed at 220 °C to improve the conductivity.The higher the conductivity of the film, the higher the conversion efficiency of the patch antenna.The sheet resistance is increased from 216 to 80 Ω/sq.The results of S 11 = -16 dB, gain = -8.6 dB, and efficiency = 7% are obtained using vector network analyzers and by antenna radiation pattern measurement.The result indicating that annealing improves the efficiency of the transparent patch antenna is feasible.