Title :
Harmonic Oscillations in Directly Excited Antennas Used in Radio Telegraphy
Author_Institution :
Professor in the Electrical Engineering Institute, Royal. Polytechnic School, Naples, Italy
Abstract :
Using a symmetrically excited artificial antenna consisting of two long coils with a spark gap between them, the author measures the frequencies, decrements, and the relative amplitudes of the fundamental current and of each of the harmonics. It is found that the theoretical rectangular wave, travelling along the antenna, is modified in form, particularly if the spark is fairly persistent. Numerical data are given.
Keywords :
Coupling circuits; Damping; Electromagnetic coupling; Inductance; Integral equations; Propagation losses; Solenoids; Sparks; Telegraphy; Transmitting antennas;
Journal_Title :
Radio Engineers, Proceedings of the Institute of
DOI :
10.1109/JRPROC.1919.217480
