DocumentCode
1036272
Title
Gigabit QPSK modulator
Author
Trambarulo, R. ; Schneider, M.V. ; Gans, M.J.
Author_Institution
AT&T Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
Volume
23
Issue
19
fYear
1987
Firstpage
998
Lastpage
999
Abstract
We describe a QPSK (quaternary phase shift keyed) modulator operating at gigabit data transmission rates at a carrier frequency of 13 GHz. The modulator circuit can also be operated as a QPSK demodulator. A modulator-de-modulator pair operating in tandem showed clean eye diagrams of the recovered data trains on each port up to l.5 Gbit/s with corresponding error rates of less than 10¿11. The circuit can be readily scaled to higher frequencies with a proportional increase in the information rate.
Keywords
data communication equipment; microwave links; modulators; phase shift keying; 13 GHz; QPSK demodulator; carrier frequency; error rates; eye diagrams; gigabit QPSK modulator; gigabit data transmission rates; modulator circuit; modulator-demodulator pair;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19870700
Filename
4258913
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