skrf.network.s2y

skrf.network.s2y(s, z0=50, s_def='power')

Convert scattering parameters [1] to admittance parameters [2].

Equations are the inverse of s2z().

Parameters:

• s (complex array-like) – scattering parameters

• z0 (complex array-like or number) – port impedances

• s_def (str -> s_def : can be: 'power', 'pseudo' or 'traveling') – Scattering parameter definition : ‘power’ for power-waves definition [3], ‘pseudo’ for pseudo-waves definition [4]. ‘traveling’ corresponds to the initial implementation. Default is ‘power’.

Returns:

y – admittance parameters

Return type:

complex array-like

See also

s2z, s2y, s2t, z2s, z2y, z2t, y2s, y2z, y2z, t2s, t2z, t2y, Network.s, Network.y, Network.z, Network.t

References

[1]

http://en.wikipedia.org/wiki/S-parameters

[2]

http://en.wikipedia.org/wiki/Admittance_parameters

[3]

Kurokawa, Kaneyuki “Power waves and the scattering matrix”, IEEE Transactions on Microwave Theory and Techniques, vol.13, iss.2, pp. 194–202, March 1965.

[4]

Marks, R. B. and Williams, D. F. “A general waveguide circuit theory”, Journal of Research of National Institute of Standard and Technology, vol.97, iss.5, pp. 533–562, 1992.