Title :
Evolution of frequency modulation
Author :
Armstrong, Edwin H.
Author_Institution :
Columbia University, New York, N. Y.
Abstract :
SOME 60 years ago the electric-power industry began the development of a system of distribution which all are now agreed was not the right system. I am referring of course to the low-voltage d-c system. The inevitableness of its replacement by the high-voltage a-c system is now obvious to everyone, although the literature of the transition stage reflects a period of violently conflicting opinion.
Keywords :
Antennas; Frequency modulation; Industries; Microphones; Radio transmitters; Receivers;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1940.6435194
