Antenna patterns of nonsinusoidal waves with the time variation of a Gaussian pulse. IV

For pt.III see ibid., vol.31, no.1, p.34-47 (1989). An experimental setup of a large-current radiator and a closed-loop sensor has recently been developed for the radiation and reception of nonsinusoidal electromagnetic waves. The time variation of the radiated waves approximately equals that of a Gaussian pulse. Here, oscillograms of antenna current and radiated nonsinusoidal pulses are presented. Magnetic flux lines representing the radiation of Gaussian pulses from a large-current sheet radiator of physical dimensions w×d×s are plotted in analogy to the plots first derived by Hertz in the late 1800s for the radiation of sinusoidal waves by a Hertzian dipole. The flux lines form closed contours as they radiate from the surface of the radiator to the far zone. The density of the flux lines at any distance from the radiator is proportion to the magnitude of the produced field strength