Implementation of Berenger absorbing boundary conditions in TLM by interfacing FDTD perfectly matched layers

C. Eswarappa and W. J. R. Hoefer

Electronics Letters, 20th July 1995, Vol. 31, No. 15, pp 1264-1266.


Berenger's perfectly matched layer (PML) absorbing boundary condition is implemented for the first time in a TLM mesh. This is achieved through a special interface between the FDTD-PMLs and the TLM lattice. Application to rectangular waveguides yields reflections less than -50dB at frequencies up to six times the cutoff frequency. These absorbing boundary conditions are compared with one-way equation absorbing boundary conditions and with matched layers having only electric losses.

Home Up