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Digital transmitter - Simple, yet preciseA transmitter developed for operation at high digital transmission speeds is described. It is a complex system that produces a clean waveform with data rates as high as 1 Mb/s; and its design makes it possible to vary all possible modulation schemes by reprogramming a chip, to vary data-transmission rates with the clock frequency, and to shape pulses without distortion. The design, furthermore, can be adapted to very-large-scale-integration (VLSI) fabrication and mass production. A prototype QPSK residual carrier modulation transmitter was fabricated and tested. The purpose was to create a deep null in the data spectrum to transmit a tone or residual carrier along with the modulation.
Document ID
19870040292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Davarian, F.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sumida, J.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
December 1, 1986
Publication Information
Publication: Microwaves & RF
Volume: 25
ISSN: 0745-2993
Subject Category
Electronics And Electrical Engineering
Accession Number
87A27566
Distribution Limits
Public
Copyright
Other

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