RF Toolbox™

s2sdc

Convert 4-port, single-ended S-parameters to 2-port, cross-mode S-parameters (S_dc)

Syntax

sdc_params = s2sdc(s_params,option)

Description

sdc_params = s2sdc(s_params,option) converts the 4-port, single-ended S-parameters, s_params, to 2-port, cross-mode S-parameters, sdc_params. sdc_params is a complex 2-by-2-by-M array that represents M 2-port cross-mode S-parameters (S_dc). s_params is a complex 4-by-4-by-M array that represents M 4-port S-parameters.

The optional option argument indicates the port numbering convention that the S-parameters use.

option can be:

• 1 — Ports 1 and 3 are the input ports. Ports 2 and 4 are the output ports. The following figure shows this convention.

  

• 2 — Ports 1 and 2 are the input ports. Ports 3 and 4 are the output ports.

The default value of option is 1.

References

Fan, W., A. C. W. Lu, L. L. Wai, and B. K. Lok. "Mixed-Mode S-Parameter Characterization of Differential Structures." Electronic Packaging Technology Conference, pp. 533–537, 2003.

See Also

s2scd

s2sdd