Abstract
A perfectly matched layer (PML) formulation is developed for 3-D envelope finite element (EVFE) solvers. The PML performance is tested against different numbers of layers and different σmax values. The results show that the PML can provide sufficient absorption of incident waves when proper parameters are chosen. Numerical tests also show that this 3-D EVFE algorithm with PML boundary conditions is unconditionally stable as the time intervals increase. Finally, the 3-D EVFE solver equipped with PML boundary conditions has been applied to the modelling of microwave integrated circuits such as MMIC interconnects and on-chip parasitic structures. Good agreements with existing simulation results are obtained with improved computational efficiency.
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