Resistive coupling effects via the substrate may damage circuit behaviour of VLSI chips. In order to analyze the influence of the substrate on the circuit behaviour of VLSI chips the admittance matrix of the substrate must be known. This paper describes a Boundary Element Method for the calculation of this matrix. The method uses a Green’s function for the bounded 3D medium. The advantage of th...

The study of the electrophysical characteristics crystalline semiconductors with structural defects is practical interest in development radiation-resistant varactors. capacitance-voltage a disordered semiconductor can be used to determine concentration point its crystal matrix. purpose this work calculate low-frequency admittance capacitor working substance “insulator–crystalline t -defects ch...

A new method for building a reduced order circuit model, based on symbolic or numerical elimination of the internal circuit nodes, is presented. The circuit passivity is preserved unlike the majority of other approaches. A 1033 node RC circuit is reduced to an admittance with one pole and two zeros for a frequency range of three decades.

Abstract This paper proposes a matrix operation method for modeling the three-phase transformer by phase-coordinates. Based on decoupling theory, 12 × dimension primitive admittance is obtained at first employing coupling configuration of windings. Under condition asymmetric magnetic circuits, according to boundary conditions connections, transformers in different connections enable be from mat...

High-order harmonic resonance is a key issue in the traction power supply systems (TPSS) of electric railways for safe operation. The effective evaluation frequency critical taking measures to suppress resonance. In this paper, influence distributed parameters networks on frequencies based accurate calculation proposed. quantitative assessments impedance and admittance are investigated. Further...

Newton-Raphson State Estimation method using bus admittance matrix remains as an efficient and most popular method to estimate the state variables. Elements of Jacobian matrix are computed from standard expressions which lack physical significance. In this paper, elements of the state estimation Jacobian matrix are obtained considering the power flow measurements in the network elements. These ...

This paper investigates the effects of mutual coupling between the elements of an array on direct data domain algorithms. Mutual coupling severely undermines the interference suppression capabilities of direct data domain algorithms. The method of moments (MoM) is used to evaluate the mutual coupling between the elements of a given array. The MoM admittance matrix is then used to eliminate the ...

An effective approach for unbalanced three-phase distribution power flow solutions is proposed in this paper. The special topological characteristics of distribution networks have been fully utilized to make the direct solution possible. Two matrices—the bus-injection to branch-current matrix and the branch-current to busvoltage matrix— and a simple matrix multiplication are used to obtain powe...