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WAVE PROPAGATION ALONG A DIELEC
DIELECTRIC ROD AERIALS
DIELECTRIC TUBE AERIALS
2 other sections not shown
aerial design amplitude analysis aperture attenuation axial axis bandwidth centimetre characteristic equation characteristics of dielectric considered corresponding curves cylindrical rods derived dielectric aerials dielectric constant dielectric cylinder dielectric rod aerials dielectric tube aerials dimensions dipole direction electric and magnetic electromagnetic elementary radiators Equivalence Principle experimental results feed field components field distribution free end free space guided wave H01 mode Hankel function HEU mode hybrid increased lens magnetic currents main lobe mechanism of radiation metal guide metal waveguide non-radiating mode normal obtained plane waves plotted points polar diagram polystyrene propagation constant radiated field radiating modes radiation characteristics radiation pattern characteristics radiation pattern expression reflected ray refracted rod and tube rod diameter rod excited rod length Schelkunoff shown in Fig side lobes side-lobe slab standing wave symmetry tangential components tapered theoretical theory and experiment tion tube surface variation vector wall thickness wave impedance wavelengths long zero