High-Gain Wideband Circularly Polarized Metasurface Antenna Array for C-band Satellite Communication

In this paper, a circularly polarized (CP) metasurface (MS) antenna array with high-gain and wideband for C-band Satellite is proposed. The array consists of 2x2 CP MS-based antennas fed with a sequential phase rotation feeding network. The proposed MS-based antenna array with an air gap exhibits compact size of 1.58 lambda(0) x 1.58 lambda(0) x 0.077 lambda(0). Simulated and measured results show that the antenna array offers a wide impedance bandwidth (45.34%) for |S11|<-10 dB with a peak gain of 14.1 dBic, and a 3-dB axial ratio (AR) bandwidth of 34.34%. Moreover, the proposed array yields smooth gain response with a 3-dB realized gain bandwidth of 38.62%. The experimental results indicate good agreement with the simulation results.