APPENDIX I: Conversions among parameter types for y, z, h, and g parameters.

AN215A: RF Small Signal Design Using Two-Port Parameters (supplied with the permission of Motorola)
AN721: Impedance Matching Networks Applied to RF Power Transistors (supplied with the permission of Motorola)
AN3009: S-Parameter S2P File Format Guide
...

S-Parameter to Impedance
Impedance to S-Parameter
Excel Spreadsheet

S-parameter magnitude
S-parameter magnitude in dB
Input/output impedance
Normalized input/output impedance
VSWR
Mismatch loss
Loss factor
Efficiency factor
Group delay (with and without smoothing!)
Unwrapped phase (with and without reference plane extensions!)
K-factor and maximum available gain
Smith chart plots