Mm. Green et An. Willson, ON THE RELATIONSHIP BETWEEN NEGATIVE DIFFERENTIAL RESISTANCE AND STABILITY FOR NONLINEAR ONE-PORTS, IEEE transactions on circuits and systems. 1, Fundamental theory andapplications, 43(5), 1996, pp. 407-410
We give results for nonlinear one-ports regarding the relationship bet
ween negative differential resistance at a particular de operating poi
nt and the stability of that operating point. In particular, we illust
rate that the presence of negative differential resistance does not ne
cessarily imply instability for any positive resistive port terminatio
n but that it does imply instability for either an open-circuit or a s
hort-circuit termination.