Patent ID: 8860402

Claim:
An electromagnetic pulse (EMP) and intentional electromagnetic interference (IEMI) event detection system comprising: an electromagnetically shielded enclosure; and a detector configured to detect an EMP or IEMI event, the detector comprising: an antenna configured to capture signals representing at least a portion of a far field magnetic field generated from an EMP or IEMI event, the EMP or IEMI event having an electric field amplitude between 10 volts/meter and 100,000 volts/meter and a frequency of between 1 MHz to 10 GHz; a circuit electrically connected to the antenna, the circuit including: an equalizer communicatively connected to the antenna via a direct current isolation circuit, the equalizer outputting signals having an amplitude independent of frequencies of detected signals, the equalizer compensating for differentiating frequency response of the antenna; a logarithmic amplifier electrically connected to the equalizer and configured to generate a range of signals based on signals received at the antenna; and a peak detector receiving signals from the logarithmic amplifier and configured to capture a peak value of the signals; wherein an EMP or IEMI event is detected at least in part based on the peak value.