An Overview of Millimeter-wave Antennas

The increased data traffic and change in the requirements of users paved the way for exploring the unexplored millimeter range of frequencies. These ranges of frequencies are best suitable for communication purposes, especially for 5G applications. Antennas are a key element in communication systems. Since the millimeter-wave antennas possess compact size, multiple antennas are used in the form of an array. The antenna arrays are popularly used since it benefits the performance of output parameters. This paper gives a brief description of millimeter-wave technology and its basic characteristics along with design considerations and design challenges of antennas at millimeter-wave frequency. This paper also covers some of the millimeter-wave antenna and antenna array designs.