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This paper describes a predictor-corrector latency insertion method (LIM) for a fast transient analysis of an ill-constructed circuit. First, the basic LIM algorithm and limitations of the method are described. Next, we propose the predictor-corrector LIM with a large value of fictitious latency for the ill-constructed topologies. Finally, numerical results show that our proposed method is applicable...
This letter describes a locally implicit latency insertion method (LILIM) for the fast simulation of an arbitrary shaped power distribution network (PDN) modeled by triangular meshes. First, an efficient modeling method based on triangular mesh is reviewed and we refer to the limitation of the LIM for the meshed PDN analysis. Next, in order to overcome the problem, we formulate the LILIM by combining...
For an analysis of large networks including nonlinear active devices and coupled elements, conventional SPICE-like simulators suffer from a large amount of computational cost due to time-consuming direct matrix operations. In order to overcome the problem, the block-latency insertion method (block-LIM) has been proposed as a fast circuit simulation technique. The advantage of the block-LIM is employing...
This paper describes a full-wave transient simulation technique based on the partial element equivalent circuit (PEEC) method and a leapfrog scheme. Usually, the quasi-static PEEC method, which does not include retardation of coupling effects, constructs a dense circuit matrix due to instantaneous interaction of the mutual couplings. On the other hand, it is known that sparsity can be exploited if...
This paper describes a fast finite-element time-domain (FETD) method using the iterative leapfrog mixed (ILM)-FETD method. To circumvent a time step size limitation of an existing leapfrog mixed (LM)-FETD method, which adopts a mixed E-B finite element formulation and a leapfrog scheme, we introduce an iterative procedure of the leapfrog scheme. Because iterative solutions of the ILM-FETD method converge...
This paper describes a fast circuit simulation technique based on the block-latency insertion method (block-LIM) and a model order reduction (MOR) technique. The block-LIM is one of the efficient transient analysis methods adopting an explicit leapfrog finite difference method. In the block-LIM, due to duality of voltage and current variables, they are successfully separated from each other by using...
This paper describes an iterative version of a latency insertion method (LIM) to overcome limitations on a time step size of the basic LIM. First, a semi-implicit LIM is reviewed to introduce a basic algorithm of the LIM. Then, it is shown that the semi-implicit LIM is equivalent to the scheme based on a matrix splitting and a trapezoidal formula. After that, we propose the iterative LIM by expanding...
In this paper, parallel-distributed block latency insertion method (block-LIM) is proposed for the fast transient simulation of the large scale circuit which includes lots of coupling elements such as mutual inductance and mutual capacitance. First, the block-LIM formulation for the network with mutual inductance and mutual capacitance is shown. Next, the parallel-distributed block-LIM is described...
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