Accurate coaxial standard verification by multiport vector network analyzer

We propose a new general formulation for calibrating a multiport network analyzer (NWA), which requires at least only one fully known two port standard and one partially known load (i.e. a sliding load). In principle, since only one fully known two port component is required, the multiport NWA should reach an accuracy higher than an ordinary two-port NWA whose calibration relies on more than one standard. Experimental results confirm the high accuracy of the multiport (n>=3) NWA, through the verification of commercially available two port standards.