Study on the HEMP induced current in the two-wire line with the metal shielded bushing

Lines into and out of a shielding box, such as power supply line and communication line are important ways by which coupling of electromagnetic pulsed energy interferes with and harms the circuit. In this paper, induced current in the two-wire line enclosed by a metal shielded bushing with one end exposed to HEMP is calculated by using the 3D FDTD method. The two-wire line is near the ground and the metal shielded bushing is directly grounded at both ends. The result is reasonable compared to the experimental data.