This paper addresses optimization of transient radiation from dipole antennas in terms of minimized pulse extent in time or flat power spectral density. The former is a typical requirement for high-range-resolution radars while the latter can meet the Federal Communication Commission (FCC) regulations on spectrum usage. Recent needs and advances in ultra-wideband (UWB) signal processing, target identification, remote and subsurface sensing, reach-frequency tagging, secure communication, and others stimulate a variety of diverse studies in transient and broadband electromagnetics, including pulsed antennas. These generic problems have been widely explored through full-wave numerical analysis, theoretical and asymptotic approaches, nonlinear optimization methods combined with full-wave electromagnetic solvers, the E- and K-pulse signal processing techniques, and other fashions.
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