| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a two-dimensional electromagnetic-field simulation method, in which a change in terms of time in a TM-mode electromagnetic field is calculated with secondary accuracy, when two mediums of different permittivities come into contact while one straight line tilted at 45 deg. with reference to Yee lattice axis is used as a boundary. SOLUTION: The two-dimensional electromagnetic-field simulation method is constituted, in such a way that a magnetic-field component in z-direction perpendicular to a plane is allocated to a lattice point of a type 1, that an electric field component in the y-direction and permittivity are allocated to a lattice point of type 2, that an electric-field component in x-direction and a permittivity are allocated to a lattice point of type 3, that changes in time in the electric-field component and the magnetic-field component are found by time-domain difference method and that, at this time,εi2 andεi1 which satisfy (εi1 +εi2 )/2=[(1+δ)ε1 +(1-δ)ε2 ]/2 and (1/εi1 +1/εi2 )/2=[(1+δ)/ε1 +(1-δ)/ε2 ]2 as permittivities are allocated to first proximity lattice points 6a, 6b and second proximity lattice points 7a, 7b.</p> |
