Analytical Deduction of the Salient Properties of a Half Wavelength J-Pole Antenna

In this paper, the analytical treatment of a half wave J-pole antenna has been carried out assuming a sinusoidal current distribution. The important properties of this type antenna have been compared with that of a half-wave dipole. It is observed that a J-pole antenna has better performance in terms of directivity. The directivity of this antenna has been found to be 2.3 dB which is slightly greater than that of a half wave centre fed dipole antenna. The gain of the antenna has been found to be better than that of a half-wavelength dipole antenna and the radiation resistance to be nearly equal to that of half wave-length dipole antenna.