RESONANCES OF PERFECTLY CONDUCTING WIRES AND BODIES OF REVOLUTION BURIED IN A LOSSY DISPERSIVE HALF-SPACE

The method of moments (MoM) is utilized to compute the complex resonan t frequencies and modal currents of perfectly conducting wires and bod ies of revolution buried in a lossy dispersive half space. To make suc h an analysis tractable computationally, the half-space Green's functi on is Computed via the method of complex images, with appropriate modi fications made to account for the complex frequencies characteristic o f resonant modes, Results are presented for wires and bodies of revolu tion buried in lossy soil using frequency-dependent measured parameter s for the complex permittivity, and we demonstrate that the resonant f requencies generally vary with target depth. In addition to presenting results, relevant issues are addressed concerning the numerical compu tation of buried-target resonant frequencies.