Dual Band Millimeter Wave MIMO Antenna Loaded with SRRs for 5G Applications

This paper presents a four element dual band MIMO patch antenna for millimeter-wave (mm-wave) wireless communication in Ka-band (26-40 GHz) applications. The proposed design consists of one U-shaped monopole element along with two split ring resonators (SRRs) symmetrically placed with respect to the feed line on the top layer and a defected ground plane. By precisely optimizing the design parameters, the geometry radiates at 28 GHz and 36 GHz with peak gains of 4.21 dBi and 6.05 dBi, respectively. A single antenna element has initially been designed with detailed analysis and subsequently the four port MIMO antenna has been realized. Both the antennas exhibit desired characteristics to be used for mm-wave 5G and future wireless applications.