Emissions Entry

0082-EX-PL-2002 Text Documents

Southwest Research Institute

2002-04-22ELS_55499

A 1.5 µs wide pulse will be applied to a resonant circuit which will, in turn, drive a small loop or dipole
antenna. The antenna and tank will resonate at their fundamental design frequency of 125 MHz. The
necessary bandwidth will be determined by the tank circuit, the characteristic bandwidth of the antenna
and the losses associated with the circuit and coupling. It is expected that the antenna will emit a
damped sinusoidal waveform of approximately five (5) or more cycles. Performing an FFT on the
simulated waveform gives an energy density spectrum with content in the range 50MHz - 200MHz
assuming a -20dB threshold criteria. The emission will be single shot with at least 1 hour between
emissions for the 2-3 week test period

Document Created: 2002-04-23 08:40:54
Document Modified: 2002-04-23 08:40:54

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