This paper describes a block matrix formulation of latency insertion method (LIM) for the fast transient simulation of the circuit which includes the elements such as mutual inductance and mutual capacitance. First, the basic formulation of LIM is shown. Next, the block-LIM formulation for the network with mutual inductance and mutual capacitance is described. Then, the block-LIM algorithm is applied to the tightly coupled transmission lines which are connected each other by a number of mutual inductors and capacitors. Finally, some numerical results are shown and it is confirmed that the proposed technique is useful and efficient for the simulations of the tightly coupled transmission lines.
In this paper, we describe a hybrid simulation technique for electrostatic discharge (ESD) events in contact discharge mode. The proposed technique is based on circuit, electrostatic field, and full-wave simulations. The circuit simulation is performed to obtain the currents which is used as the input excitation in the subsequent full-wave simulation. A circuit to be analyzed is the equivalent circuit model of an ESD generator attached with a ground strap and a target object. Meanwhile, we perform the electrostatic field simulation in order to calculate electric field distribution around the generator charged before the discharging phase. Finally, a computational domain excluding the ESD generator and the ground strap is analyzed by means of the full-wave simulation based on the finite-difference time-domain (FDTD) method. In other words, we do the full-wave simulation for only a part of the whole computational domain by using the input currents as external effects to the target object. Because the hybrid simulation can take a low computational cost relative to existing full-wave techniques, it can reduce the total CPU time and the amount of memory consumption. We compare the accuracy and the CPU time of our approach with those of the conventional FDTD solver to show the adequacy of the hybrid simulation method.
Abstract-This paper describes a fast circuit simulation technique using the latency insertion method (LIM) with a parallel and distributed leapfrog algorithm. The numerical simulation results on the PC cluster system that uses the cloud computing system are shown. As a result, it is confirmed that our method is very useful and practical.
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