DocumentCode
767469
Title
A Simple Modulator for Sinusoidal Frequency Shift Keying
Author
LaRosa, Richard ; Marynowski, Thomas J. ; Henrich, Kenneth J.
Author_Institution
Hazeltine Corp., NY
Volume
30
Issue
5
fYear
1982
fDate
5/1/1982 12:00:00 AM
Firstpage
1048
Lastpage
1051
Abstract
This paper describes a method of generating a constant-envelope sinusoidal-frequency-shift-keyed spread-spectrum signal from a sequence of phase coded rectangular pulses. In-phase and quadrature pulse streams are combined and passed through a SAW filter. The constant time delay property of the SAW filter is used to transform the rectangular pulses into the proper shape. Time and frequency domain outputs are shown for a modulator operating at 70 MHz and a chip rate of 5 Mchips/s.
Keywords
frequency shift keying; modulators; radiocommunication; SAW filter; modulator; phase coded rectangular pulses; sinusoidal frequency shift keying; spread-spectrum signal; Delay effects; Frequency domain analysis; Frequency modulation; Frequency shift keying; Pulse generation; Pulse shaping methods; SAW filters; Shape; Signal generators; Spread spectrum communication;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1982.1095546
Filename
1095546
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