Title :
Transmission Lines as Frequency Modulators
Author :
Eastman, Austin V. ; Scott, Earl D.
Author_Institution :
University of Washington, Seattle, Washington
fDate :
7/1/1934 12:00:00 AM
Abstract :
A method of producing frequency modulation is described wherein an eighth-wave radio-frequency transmission line is used as a modulation device. One end of the transmission line serves as a part of the tank circuit of the oscillator while at the other end is placed a variable resistance, such as a vacuum tube. Absolute linearity may be obtained with negligible amplitude modulation. A brief description of different types of transmission lines used is also given.
Keywords :
Distributed parameter circuits; Electron tubes; Frequency modulation; Impedance; Oscillators; Power transmission lines; Radio frequency; Transmission line theory; Transmission lines; Zirconium;
Journal_Title :
Radio Engineers, Proceedings of the Institute of
DOI :
10.1109/JRPROC.1934.226739
