A Circularly Polarized Metasurface Antenna Based on Substrate Integrated Double Line

A dual-slot fed circularly polarized metasurface (MTS) antenna based on the substrate integrated double line (SIDL) technology is presented in this paper. The proposed consists of a MTS which is made up of an array of
$3\times 3$
periodic metal patches, a SIDL and the dual-slot which coupled the energy to the MTS. The simulated results show a −10-dB impedance bandwidth is from 24.03 GHz to 26.45 GHz, a 3-dB axial ratio bandwidth is from 24.36 GHz to 26.44 GHz and the peak gain is 8.98 dBi at 25.4GHz.