Patent ID: 7454725
Filing Date: 2008-11-18
Classification: G06F

Abstract:
1. An apparatus for analyzing a distributed constant in a transmission line, comprising: an input section for inputting distributed parameters for each line segment virtually and arbitrarily divided in said transmission line to be analyzed; an arithmetic operation section for calculating characteristic data of said transmission line by performing a predetermined arithmetic operation based on said distributed parameters input from said input section; and an output section for outputting the characteristic data, wherein said distributed parameters input from said input section include a distributed self-inductance L wherein said arithmetic operation section calculates the characteristic data in said transmission line by solving a differential equation regarding electromagnetic interaction of said each line segment based on predetermined distributed parameters being input from the input section, and wherein said arithmetic operation section comprises a secondary simultaneous differential equations as represented in a following formula 1 regarding electromagnetic interaction of said each line segment with the voltage V(θ) of said each line segment in said transmission line as an unknown variable (in the formula 1, V(θ) is a column vector of n×1 as represented in a following formula 2, Z is an impedance matrix created based on said distributed parameters as represented in a following formula 3, Y is an admittance matrix created based on said distributed parameters as represented in a following formula 4), in which said secondary simultaneous differential equations as represented in the formula 1 are solved by obtaining the eigenvalues y