DocumentCode
1201354
Title
A Stabilized Frequency-Modulation System
Author
Pieracci, Roger J.
Author_Institution
Collins Radio Company, Cedar Rapids, Iowa
Volume
30
Issue
2
fYear
1942
Firstpage
76
Lastpage
80
Abstract
A wide-band frequency-modulation system in which the center frequency is directly controlled by a single crystal is described. The stability obtainable is that of a single quartz-crystal oscillator. Further, a system of distortion correction in a phase modulator is described in which the maximum angle of phase shift may be 60 degrees or more with low attendant distortion. This is accomplished by modulation of both the carrier and sidebands.
Keywords
Broadcasting; Circuits; Control systems; Frequency modulation; Oscillators; Phase distortion; Phase modulation; Signal generators; Stability; Wideband;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1942.233659
Filename
1694434
Link To Document