Abstract
In the present paper, the writer intends to facilitate the understanding of the phen mena of electric oscillation in the transmission lines. The resonance frequency is deduced from the general equations for an aerial circuit, censisting of parallel lines of uniformly distributed capcity and inductance, connected at its end to the net-works of concentrated inductance and capacity. Neglecting the resistance, the distribution of current and potential along the resonant transmission line is discussed.
In the experiments conducted by the writer on parallel aerial line 538 meters long, be obtained the resonant wave length and experienced that stationary wave is produced in the aerial line by the impressed undamped current of the resonant wave length. The obtained results show the coincidence with the theory.
Wired Radio in high tention transmission line is an applications of the phenomena of electric oscillation in the aerial line and there are two systems in practice. In on system high tension condensers are connected between the carrier telephone apparatus and transmission line; and in the other system resenant parallel lines are stretched on the same tower with the transmission line, The former was described by the writer in "Proceedings of the Institute of Radio Engineers June 1920", and the latter is dessribed this paper. This method is patented by the writer and his cooperates in Japan, Sept. 1920. and it was works out independent of foreign investigations. This study was made at Hiraiso laboratory in 1920. and the further investigations will be published in the near future.
