A composite-cell multiresolution time-domain technique for design of electromagnetic band-gap and via-array structures

In this paper the Haar-wavelet multiresolution time-domain (MRTD) scheme is modified in a way that enables the modeling of arbitrary positioned metals within a cell, leading to the development of composite cells that are useful for the simulation of highly detailed structures. The application of this technique to one such structure, an electromagnetic band-gap (EBG) resonator, is presented. The technique demonstrates a time-domain approach in which MRTD can be used to drastically reduce the number of cells needed to simulate a complex device while taking full advantage of the technique's inherent time-and space-adaptive gridding.