Calculation of braided shielding cable responses in radiation and pulsed current injection environments

Using the transmission line model, the response in radiation and pulsed current injection(PCI) environments of braided cable shields coupling to inner conductor is calculated by finite-difference time-domain method. The numerical results indicate that the peak value of voltage of radiation environment is larger than the near port of PCI environments, and the far port is the biggest. The peak value of voltage and the integrate value of absolute value of voltage are in direct ratio with the current amplitude of shields. And the value is independent of the rise time. The value is non-linear with the full wave at half maximum(FWHM) for small FWHM, but it is just the opposite for big FWHM. The peak value and the length of cable are changed in the same ratio for short cable, as the length change