Unified Filter Description and Measurement with multiport blocks

The main goal of this paper is the unified processing and calculation of 2, 3, 4-port filter data to obtain insertion loss (ISL), modal (common, differential) conversions from input to output, voltage or current transfer functions with the real line impedances. All calculations are based on nodal (single ended) scattering matrix measurements of 2, 3, 4-port filter blocks.