| DecascadeLeft2NP2NPT(SParamDataAndNoiseParamDataT, SParamDataAndNoiseParamDataT) | Decascades 2N-Port a from the left side of 2N-Port ab |
| DecascadeLeft2NP2NPT(SParamDataAndNoiseParamDataT, SParamDataAndNoiseParamDataT, SParamDataT) | Decascades 2N-Port a from the left side of 2N-Port ab using known S-Parameters of b |