Patent ID: 8773107
Filing Date: 2014-07-08
Classification: G01R

Abstract:
1. An apparatus configured to detect electromagnetic pulse (EMP) and intentional electromagnetic interference (IEMI) events, the apparatus comprising: a shielded loop magnetic antenna configured to receive signals representing at least a portion of a far field magnetic field generated from an electromagnetic pulse (EMP) or intentional electromagnetic interference (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; and a circuit electrically connected to the shielded loop magnetic antenna, the circuit including: an equalizer connected to the shielded loop magnetic antenna via a direct current isolation circuit, the equalizer outputting signals having amplitudes independent of frequencies of detected signals, the equalizer compensating for a varying 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; a peak detector receiving signals from the logarithmic amplifier and configured to capture a peak value of the signals; and wherein the peak detector determines a peak value of an electrical field of the EMP or IEMI event based on the captured signals.