With the advent of the Internet-of-Things (IoT), 5G mobile communications, and autonomous vehicle communications, there is a growing interest in developing technologies that allow high data throughput at short distances. A way to achieve this goal is to exploit solutions operating at gigahertz (GHz) carrier frequencies along with wide bandwidth (BW). Here, we briefly discuss the application of radar solutions in situations where millimeter waves (mm waves) are employed in radar systems, bringing about the benefit of using small antennas.