The convolutional PML for FDTD analysis: Transient electromagnetic absorption from DC to daylight

The convolutional PML (CPML) was introduced ten years ago as an efficient implementation of Berenger´s PML absorbing boundary within FDTD simulations. Numerous researchers and practitioners have demonstrated the benefits of the CPML for grid termination across a broad spectrum of electromagnetic applications. In this paper the basic formulation as well as a recently introduced high order implementation is revisited and its advantages to the EMC community are demonstrated.