Future communication networks require significantly increased bandwidths in order to cope up with the ever increasing number of wireless devices and high data throughput. Today’s millimeter wave technology is mature enough to handle this requirement. Millimeter wave components are usually realized by frequency scaling the microwave components. However, an engineer has to deal with several design challenges in terms of higher loss, high signal-to-noise ratio, signal distortions etc. while implementing a millimeter wave system. Primary focus of this course is to discuss the design issues at millimeter wave frequencies.