Transient wave propagation in radially inhomogeneous biconical line

Propagation of a transient wave in a radially inhomogeneous biconical line is considered in the time domain using mode basis method. The line is excited by impulse waveform current in a ring. Dependence of cutoff frequencies on the line geometry and dielectric filling are studied. The possibility to increase the radiating signal amplitude via introduction of radial layered dielectric filling is shown.