Metasurface‐Based Circular Polarized Antenna With CSRR for 5G Wireless Mobile Network Communications

ABSTRACT In this paper, a compact metasurface (MTS)‐based microstrip circular patch (MCP) antenna with a defected ground structure (DGS) is designed along with a complementary split ring resonator (CSRR). The proposed 5G wireless network operates at a 20‐GHz resonating frequency with a 15‐GHz bandwidth that varies from 14 to 29 GHz, including a 6.3‐dBi valued gain. The geometric dimensions of the proposed antenna are 20 20 1.6 with an electrical size of having a fractional bandwidth of 69.7%. The designed antenna consists of a highly truncated multilayer MTS comprising an array of 2 2 unit cells. The main objective attains an improved gain and stable radiation with the CSRR‐DGS structures that use a substrate of FR4 with a dielectric constant of 4.4 along with a loss tangent of 0.025. The designed methodology advances the function of an in‐cut MTS structure, which can miniaturize the antenna size and is best suited for enhancing the electromagnetic coupling along with the significant performance improvement. The elegant bandwidth and radiation make it a strong candidate for the next‐generation 5G wireless communication devices.