Contents I. Introduction
Recently, the fifth generation (5G) mobile and wireless communication has become a prominent research area among the researchers [1]–[2]. To achieve high data rate up to Gbps, millimeter wave technology has drawn immense attention among the researchers. However, there are certain design challenges at millimeter wave frequency band such as high free space path loss, severe attenuation due to obstacles present between transmitter and receiver, etc. To overcome these limitations while maintaining high data rate, highly directive antennas are required.
