skrf.tlineFunctions.zl_2_swr

skrf.tlineFunctions.zl_2_swr(z0, zl)

Standing Wave Ratio (SWR) for a given load impedance.

Standing Wave Ratio value is defined by:

\[VSWR = \frac{1 + |\Gamma|}{1 - |\Gamma|}\]

where

\[\Gamma = \frac{Z_L - Z_0}{Z_L + Z_0}\]

Parameters:

• z0 (number or array-like) – line characteristic impedance [Ohm]

• zl (number or array-like) – load impedance [Ohm]

Returns:

swr – Standing Wave Ratio.

Return type:

number or array-like