  Terahertz technology has made significant advances in the fields of
spectroscopy, imaging and, more recently, wireless communications. In the
latter, the use of this frequency band between 0.1 and 10 THz becomes extremely
attractive due to the abundance of bandwidth and the potential for low area and
power footprints, yet challenging given the large propagation losses and the
lack of mature devices and circuits for terahertz operation. Maturity issues
aside, this combination of features renders terahertz wireless communications
desirable for highly integrated applications where area may be a decisive
metric.
