Radiation from Wooden Rods with Bends & Forks

Abstract

The experimental studies of dielectric rod radiators, having bends/forks excited in HEn (dipole) mode, show that the main lobe is tilted in the direction of the bend or along the arms of the fork, if there is no portion of the rod exposed along the zero direction. The tilt of the main lobe is affected by the portion of the rod along zero direction. For the length of the rod equal to or greater than 2 wavelengths in the zero direction, the main lobe is not tilted but has broadening effect on the main lobe. The greater the angle of the bend the greater is the tilt of the main lobe. For the angle of the bend above about 40°, the main lobe is not distinct but is split up into a number of peaks. The gain falls in the direction of the bend with increasing angle. Along the axial direction of the guide, the signal decreases at first and then increases as the angle of the bend is increased.

Indexing Term:

• Dielectric Aerials