Abstract
A compact class of general-radius thin-wire representation models combined with a 3-D high-order finite-difference time-domain/transmission-line matrix technique is developed in this paper for realistic large-scale microwave applications. Founded on an appropriately formulated set of telegrapher's equations via an error-controllable interpolation process, the new methodology efficiently approximates propagating waves along the radial direction of the wire and subdues artificial instabilities. Furthermore, through a nonoverlapping grid discretization algorithm, the hyperbolic character of Maxwell's laws is physically preserved and lattice reflection errors are extensively minimized. So, tilted and circular-loop wires of arbitrary orientation, pertaining to mesh axes, are accurately coupled with the hybrid method. These enhanced features are successfully validated by several composite media configurations.
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