Trends in Measurements in the mm-Wave Range

The tendency to expand the frequency range of measurement equipment one can observe for coaxial systems, which measure in a continuous sweep the whole range up to 50 or 60 GHz. This is typical for automatic vector network analyzers. Also the new spectrum analyzers enlarge the unambiguous frequency range using new YIG preselection filters. Stand alone network analyzers like Sixports or homodyne NWA´s still have the usual waveguide bandwidth. An example of own development will be described. Finally the further increase of the upper frequency limit for coaxial systems by the development of a 1 mm- connector will be discussed.