This book presents the technology of millimetre waves and Terahertz (THz) antennas. It
highlights the importance of moderate and high-gain aperture antennas as key devices for
establishing point-to-point and point-to-multipoint radio links for far-field and near-field
applications such as high data-rate communications intelligent transport security imaging
exploration and surveillance systems. The book provides a comprehensive overview of the key
antenna technologies developed for the mm wave and THz domains including established ones ¿
such as integrated lens antennas advanced 2D and 3D horn antennas transmit and reflect arrays
and Fabry-Perot antennas ¿ as well as emerging metasurface antennas for near-field and
far-field applications. It describes the pros and cons of each antenna technology in comparison
with other available solutions a discussion supplemented by practical examples illustrating
the step-by-step implementation procedures for each antenna type. The measurement techniques
available at these frequency ranges are also presented to close the loop of the antenna
development cycle. In closing the book outlines future trends in various antenna technologies
paving the way for further developments. Presenting content originating from the five-year ESF
research networking program ¿Newfocus¿ and co-authored by the most active and highly cited
research groups in the domain of mm- and sub-mm-wave antenna technologies the book offers a
valuable guide for researchers and engineers in both industry and academia.