Excitation of a finite length cylinder by an azimuthal Hertz dipole

The method of integral equations is used to study the excitation of an ideally conducting cylinder of finite length by an electric azimuthal dipole in the resonant frequency range. The induced current distribution on the surface of the cylinder is examined, and the far field is investigated as a function of cylinder size and dipole location with respect to the edges of the cylinder. Conditions under which cylinder finiteness may be neglected in calculating radiation patterns in the transverse plane are determined.