RF Toolbox™

stabilityk

Calculate stability factor K of 2-port network

Syntax

[k,b1,b2,delta] = stabilityk(s_params)

Description

[k,b1,b2,delta] = stabilityk(s_params) calculates and returns the stability factor k, and the conditions b1, b2, and delta for the 2-port network. The input s_params is a complex 2-by-2-by-m array, representing m 2-port S-parameters. stabilityk calculates the outputs using the following equations:

where

• , , , and are vectors of S-parameters, taken from the input argument s_params.

• 

Necessary and sufficient conditions for stability are k>1 and |delta|<1.

References

Gonzalez, Guillermo, Microwave Transistor Amplifiers: Analysis and Design, 2nd edition. Prentice-Hall, 1997, pp. 217–228.

See Also

snp2smp

stabilitymu