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However, as our infrastructure and our military becomes ever more dependent on microchips and electronics in general, any developments in the ease with which an EMP can be developed should be of considerable interest to military and security professionals, or even, if this device is as straightforward as it appears to be, enterprising attendees of next year's Maker Faire.
Researchers discovered a linear relationship between the number of antennas (from one to eight) used in their time reversal mirror and the resulting amplitude of the microwave pulse they generated.
Further amplification of the signal before retransmission by the mirror, using a technique called "one-bit time reversal," allowed the team to achieve 46 dB of amplification. Because decibels are represented on a logarithmic scale, that corresponds to amplification of the original signal by a factor of more than 10,000.