A loaded technique for modeling oblique wire in finite-difference time-domain method

When the thin wire whose orientation cannot be parallel to Cartesian axis is modeled by the finite-difference time-domain method, the staircasing introduce numerical errors and nonphysical phenomenon. In order to reduce the influence on the induced current, a loaded technique is proposed. The lumped elements are matched at the grid corner based on the contour-path model. All the electromagnetic difference equations nearby the wire are modified. The accuracy of the proposed technique is demonstrated by the comparison with the method of moment.