Guest Editorial

Spectrum crowding in microwaves and bandwidth hungry applications is a problem, resulting in the need to use higher frequencies. Millimetre waves have the potential to provide the new capabilities that are required for emerging applications, such as 5G and satellite communications, and carry the promise of making broadband available everywhere. Antennas and circuits are vital in achieving this goal and innovative designs can help to alleviate power needs. Furthermore, these components need to be integrated with other subsystems. The transfer of microwave techniques to millimetre technologies is not straightforward as losses become very important and gain specifications are higher