Metasurface Superstrate Antenna With Wideband Circular Polarization for Satellite Communication Application
A new wideband circularly polarized antenna using metasurface superstrate for C band satellite communication application is proposed in this letter. The proposed antenna consists of a planar slot coupling antenna with an array of metallic rectangular patches that can be viewed as a polarization dependent metasurface superstrate. The metasurface is utilized to adjust axial ratio (AR) for wideband circular polarization. Furthermore, the proposed antenna has a compact structure with a low profile of 0.07l0 l0 stands for the free space wavelength at 5.25 GHz) and ground size of 34.5x28 mm2. Measured results show that the 10 dB impedance bandwidth for the proposed antenna is 33.7% from 4.2 to 5.9 GHz, and 3 dB AR bandwidth is 16.5% from 4.9 to 5.9 GHz with an average gain of 5.8 dBi. The simulated and measured results are in good agreement to verify the good performance of the proposed antenna.
IEEE Antennas and Wireless Propagation Letters