Abstract
This paper describes a new hybrid technique, combining the alternating direction implicit finite difference time domain (ADI-FDTD) method and the method of moments in the time domain (MoMTD) to analyze problems involving thin-wire antennas close to inhomogeneous dielectric bodies. The unconditionally stable ADI-FDTD formulation presents computational advantages over the explicit Yee FDTD scheme in cases that require a fine mesh to accurately model their electromagnetic characteristics. The hybrid procedure has been found stable in the examples analyzed so far, which was not always the case in the previous approach based on the classical Yee FDTD.
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