Optimization of uniaxial perfectly matched layer parameters for finite difference time domain simulation and application to coupled microstrip lines with multiple bend discontinuities
The finite difference time domain method is applied for the analysis of coupled microstrip lines with multiple rightangle bends. The uniaxial perfectly matched layer (UPML) boundary condition is used to absorb outward waves. The UPML parameters are optimized to obtain absorption of both propagating and evanescent. waves. It is also shown that this optimization increases the cutoff time and makes it possible to simulate the structures for a larger number of time steps. (C) 2002 Wiley Periodicals, Inc.
uniaxial perfectly matched layer finite difference time domain coupled microstrip lines discontinuities absorbing boundary surface impedance boundary condition