Design, realization and performance of a millimetric six-port network analyzer

This paper presents the design, realization and performance of a six-port network analyzer in W frequency band (75-110 GHz). Schottky diodes operating in AC detection mode are used as power detectors. A new calibration method taking into consideration the imperfection components of the system, especially the flexible waveguide and the couplers is described. Finally, a comparison between experimental results performed with the six-port network analyzer and other measurement systems available in the W-band are presented.