Effect of lightning electromagnetic environment on radio fuze

Lightning electromagnetic pulse field (LEMP) was simulated to study its effect on naked radio fuze. The voltage wave from MARX generator was injected into GTEM cell to simulate the electric field of LEMP, and the pulse current wave from lightning surge generator was injected into loop to simulate the magnetic field in the loop. Some radio fuze was chosen as samples to test its deposited security in strong LEMP environment. The experimental results show that in severe condition the lightning electric field can attaint the high frequency groupware and might disable the fuze to produce detecting signal. The lightning electric field can destroy the demodulation circuitry and cause the demodulation voltage out of gear. The lightning magnetic field has no evident effect on the fuze.