Abstract
As feature size of a circuit decrease, many second order effects such as transient effect of power grid network cannot be ignored during design. In this thesis, we focus on transient effect of power grid network, this transient effects cause voltage fluctuation over power grid network, called IR drop. We survey two approaches to solve/analyze voltage fluctuation over power grid network. The first approach is prediction-based method different from simulated-based approach. We observe that power grid network is isomorphic to a transmission line and we try to predict voltage fluctuation by signal propagation and decay properties without simulating state equation like HSPICE. The other is effect of decoupling capacitance on power grid network, we connect decap effect with transmission line, but relationship between steady state response and transient problem is not clear.