Abstract:Aiming at the miniaturization design goal of environmental hybrid energy harvesting, a dual-band Coplanar Waveguide(CPW) antenna based on Polyvinylidene Fluoride(PVDF) piezoelectric material is proposed. The main radiation element of the antenna is a rectangular copper sticker. The symmetric L-shaped copper stickers on both sides form a coplanar waveguide feeding structure, which works as a perturbation unit to change the surface current distribution of the antenna, and achieve the dual-band design requirement. The antenna is designed and fabricated on the PVDF piezoelectric film. Due to the piezoelectric properties and high dielectric constant of the piezoelectric material itself, the antenna can simultaneously harvest both Radio Frequency(RF) and vibration energies and the size of the antenna can be effectively reduced. The experimental results show that the antenna can work in the common Industrial Scientific Medical(ISM) band of 2.4 GHz and 5.8 GHz at the same time, and the peak gains are 0.77 dB and 2.47 dB, respectively.