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s2scd - Convert 4-port, single-ended S-parameters to 2-port, cross-mode S-parameters (S_cd)

Syntax

scd_params = s2scd(s_params,option)

Description

scd_params = s2scd(s_params,option) converts the 4-port, single-ended S-parameters, s_params, to 2-port, cross-mode S-parameters, scd_params. scd_params is a complex 2-by-2-by-M array that represents M 2-port cross-mode S-parameters (S_cd). 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 — Single-ended ports 1 and 3 pair together to become cross-mode port 1. Ports 2 and 4 become cross-mode port 2. The following figure shows this convention.

  

• 2 — Ports 1 and 2 become cross-mode port 1. Ports 3 and 4 become cross-mode port 2. The following figure shows this convention.

  

• 3 — Ports 1 and 2 become cross-mode port 1. Ports 4 and 3 become cross-mode port 2. The following figure shows this convention.

  

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

s2scc

s2sdc

s2sdd

s2smm

smm2s

s2scc

s2sdc

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