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Amplifiers' unconditional stability condition

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symsnowfairy

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unconditional stability wiki

It said that the condition of amplifiers' unconditional stability is K factor not smaller than 1 and delta(S) smaller than 1. But for my simulation, while this condition is satisfied, the load stability circle doesn't lie totally outside of Smith Chart. It means that the load does not satisfy the condition of unconditional stability.

What is the problem? Is it because there is some exception of the condition mentioned above?

Thanks in advance!
 

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