A Circularly Polarized H-shaped Water Patch Antenna

A circularly polarized H-shaped water patch antenna (CPHWPA) is proposed in this paper.By cutting a pair of rectangular notches on a set of one opposite sides of the square patch to form an H-shaped patch,the proposed CPHWPA can realize circularly polarized. H-type patch and circular plate floor are composed of pure water and photopolymer resin.Simulation results show that the proposed CPHWPA can achieve a wide impedance bandwidth of 18.2%,a 3-dB axial ratio (AR) bandwidth of 3.6% with high transmittance. Within the working frequency band of the antenna, the radiation efficiency of the CPHWPA is greater than 90%.