����It is very important to choose proper time domain modes when microwave structures were analyzed by time domain Diakoptics. Two dimensional Bessel functions is proper time domain modes in time domain Diakoptics. One dimensional Bessel functions expand theorem was extended to two dimensional, the completeness and orthotropic of two dimensional Bessel functions were proved. Based on analysis of electromagnetic field distributions for such open microwave structures as coplanar strips, the zero and one order Bessel functions were proved to be the proper time domain mode functions. The results of this method and the finite difference time domain (FDTD) were compared and there are good sameness between them.
Su Donglin, Park Junseok, Qian Yongxi, et al. Waveguide bandpass filter analysis and design using multimode parallel FDTD Diakoptics[J].IEEE Transactions on Microwave Theory and Techniques.1999, 47(6):867-876