RF Toolbox

Two-Port Parameter Converter

Convert between S, Z, Y, and ABCD (transmission) parameter matrices for a 2-port network. Enter the 4 complex parameters of one type and all other representations are computed instantly. Real and imaginary parts for each element.

Equations & Parameters ▸
SScattering parameters — measured at RF with a VNA. S11=ΓIN, S21=forward gain.
ZImpedance parameters — open-circuit driving-point/transfer impedances.
YAdmittance parameters — short-circuit. Y = Z⁻¹.
ABCDTransmission (chain) matrix — cascade by multiplying matrices. Used for filter/transmission line analysis.
Input Type & Reference Impedance
Ω
for S↔Z/Y/ABCD conversion
Input Matrix (Real + jImag)
Results