Traceability to national standards for S-parameter measurements of devices fitted with precision 1.85 mm coaxial connectors

This paper describes a new facility that has been introduced recently to provide traceable scattering parameter measurements in the precision 1.85 mm coaxial line size. The facility uses a Vector Network Analyser (VNA) along with reference air lines to calibrate the VNA and hence establish the characteristic impedance for the S-parameter measurements. Traceability to national standards and the International System of units (SI) is achieved via precision mechanical measurements of the reference air lines. Some typical measurements, with uncertainties, are given showing the performance of this measurement facility operating to 65 GHz.