Investigation of a FSS Inspired Printed Monopole Antenna with Gain Enhancement for 5G Applications

There is a high demand for effective RF front-ends that offers strong circular polarization (CP) features & are feasible from design front with high CP antenna gain, strong radiation, and consistent antenna efficiency to properly utilise RF signals that are present in the ambient RF environment. So, a frequency selective surface (FSS)-inspired CP printed monopole is reported. It attains a broadened CP with the fractional bandwidth > 10%, CP peak gain of 7.98 dBic, directional radiation pattern with nice 3-dB angular beamwidth in the desired operating bands, along with an improved front-to-back ratio (FBR) within the admissible limits. The attained outcomes matched with performance trade-off obtained from state-of-the-art reviewed antenna designs. In addition to, comprehensive design is reported for the widespread solution of the limitation, which is usually faced by monopole antennas in sub-6 GHz bands.