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Further research on the behavior of energy density of electromagnetic pulses
Author(s) -
Geyi Wen
Publication year - 1996
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19960820)12:6<331::aid-mop8>3.0.co;2-g
Subject(s) - electromagnetic pulse , pulse (music) , electromagnetic radiation , physics , energy (signal processing) , range (aeronautics) , acoustics , electromagnetic field , computational physics , radar , optics , time domain , radar cross section , engineering , telecommunications , computer science , scattering , aerospace engineering , quantum mechanics , detector , computer vision
In this article we investigate the behavior of the energy density of electromagnetic pulse on the basis of a general integral expression for the radiated field in the time domain. The relationship between the rate of decay of the radiated energy of an electromagnetic pulse and the exciting source has been discussed. It has been demonstrated that the shorter the rise time of the exciting pulse, the slower the decay of the radiated electromagnetic energy. It has also been shown that for a pulse with a carrier the decay of the radiated energy can be slowed down by increasing the frequency of the carrier. These properties indicate that the high‐frequency components in an exciting pulse play a crucial role in focusing overall monostatic radar cross section (RCS) performance for all wave incident angles and over a wide range of frequencies. © 1996 John Wiley & Sons, Inc.