Pulsed radiation from a loop antenna in the ionospheric plasma

Pulsed radiation from a loop antenna in a magnetoplasma modeled upon the Earth's ionosphere is studied. An expression for the radiated energy is derived and its distribution over the spatial and frequency spectra of the excited waves as a function of parameters of the antenna current is analyzed. Numerical results referring to the case where the frequency spectrum of the antenna current is concentrated in the whistler frequency range are reported and discussed.