Module 10.3 MSG/MAG and K Factor of Transistor
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 Freq (GHz) MagS11 (Magnitude) AngS11 (Phase Angle) MagS21 (Magnitude) AngS21 (Phase Angle) MagS12 (Magnitude) AngS12 (Phase Angle) MagS22 (Magnitude) AngS22 (Phase Angle)

Make a custom Sparameter.s2p file.
Step 1 : the Sparameter.s2p template file.
Step 2 : Open the Sparameter.s2p with a text editor.
Step 3 : Replace the value of the Freq., Mag., and Ang. with your device S parameters
Step 4 : Save the file and exit.
Step 5 : Browse and submit your new Sparameter.s2p file.

 Introduction: A convenient way of expressing the sufficient conditions for stability of the microwave amplifiers is stable factor (K) and |Δ|. When K > 1 and |Δ| < 1 that the amplifier is unconditional stable. The maximum transducer gain under simultaneous conjugate match in this condition is called maximum available gain (MAG). On the contrary, when K < 1 and |Δ| < 1 , the amplifier is potential unstable. The maximum stable gain (MSG) is defined as the value of maximum transducer gain when K=1. K : Stable Factor G_(T,max) : Maximum Available Gain(MAG) G_(MSG) : Maximum Stable Gain(MSG) K= (1- |S _11 |^2 - |S _22 |^2 + |∆ |^2 )/(2| S _12 S _21 | ) |∆| = |S_11 S_22 - S_12 S_21| G_(T,max) = |S_21 |/|S_12 | (K- sqrt(K ^2 -1 ) ) G_(MSG) = (| S_21|)/(|S_12| )