Enhanced conformal FDTD method for predicting transient responses of arbitrary PEC wedges illuminated by an electromagnetic pulse

One enhanced conformal FDTD method is proposed for characterizing transient responses of arbitrary PEC wedges illuminated by an electromagnetic pulse (EMP), and one low-cost modified technique is introduced for effectively suppressing numerical dispersion error with much high accuracy achieved. Excellent agreement is also obtained between our captured diffraction field of the wedge and that of uniform theory of diffraction (UTD). Further, numerical investigation is performed for predicting the EMP responses of PEC wedges with different geometries, different incident EMP directions and different observation points, etc. We would like to say that this study will be useful for the design of EMC and electromagnetic protection for ship or aircraft platform.