DocumentCode
937533
Title
RF Bandwidth of Frequency-Division Multiplex Systems Using Frequency Modulation
Author
Medhurst, R.G.
Author_Institution
Research Labs., General Electric Co., Ltd., Wembley, Eng.
Volume
44
Issue
2
fYear
1956
Firstpage
189
Lastpage
199
Abstract
The radio-frequency energy distribution of a Frequency-Division-Multiplex, Frequency-Modulated Multichannel telephony system is evaluated. An estimate is obtained of the intermodulation noise generated when this spectrum is passed through an "ideal" bandpass filter with very sharp cutoff. From this it is possible to specify the minmum bandwidth of such a filter in terms of required system performance. This result provides a useful guide to the bandwidth over which control of group-delay and attenuation is necessary.
Keywords
Antenna feeds; Band pass filters; Bandwidth; Frequency division multiplexing; Frequency modulation; Microwave filters; Radio frequency; Reflector antennas; Shape measurement; Telephony;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1956.274905
Filename
4051992
Link To Document