Bültmann & Gerriets
Direct Digital Synthesizers
Theory, Design and Applications
von Kari A. I. Halonen, Jouko Vankka
Verlag: Springer US
Reihe: The Springer International Series in Engineering and Computer Science Nr. 614
Hardcover
ISBN: 978-1-4419-4895-3
Auflage: Softcover reprint of hardcover 1st ed. 2001
Erschienen am 07.12.2010
Sprache: Englisch
Format: 235 mm [H] x 155 mm [B] x 12 mm [T]
Gewicht: 335 Gramm
Umfang: 216 Seiten

Preis: 160,49 €
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Inhaltsverzeichnis
Klappentext

Preface. Abstract. List of Abbreviations. List of Symbols. 1. Introduction. 2. Direct Digital Synthesizer. 3. Indirect Digital Synthesizer. 4. Cordic Algorithm. 5. Sources of Noise and Spurs in DDS. 6. Blocks of Direct Digital Synthesizer. 7. Spur Reduction Techniques in Sine Output Direct Digital Synthesizer. 8. Up-Conversion. 9. Direct Digital Synthesizer with an On-Chip D/A-Converter. 10. CMOS Quadrature if Frequency Synthesizer/Modulator. 11. Multi-Carrier QAM Modulator. 12. Single Carrier QAM Modulator. 13. Multi-Carrier GMSK Modulator. 14. Conclusions. References. Appendices.



A major advantage of a direct digital synthesizer (DDS) is that its output frequency, phase and amplitude can be precisely and rapidly manipulated under digital processor control. Other inherent DDS attributes include the ability to tune with extremely fine frequency and phase resolution, and to rapidly `hop' between frequencies. These combined characteristics have made the technology popular in military radar and communications systems. In fact, DDS technology was previously applied almost exclusively to high-end and military applications: it was costly, power-hungry, difficult to implement, and required a discrete high speed D/A converter. Due to improved integrated circuit (IC) technologies, they now present a viable alternative to analog-based phase-locked loop (PLL) technology for generating agile analog output frequency in consumer synthesizer applications.
It is easy to include different modulation capabilities in the DDS by using digital signal processing (DSP) methods, because the signal is in digital form. By programming the DDS, adaptive channel bandwidths, modulation formats, frequency hopping and data rates are easily achieved. The flexibility of the DDS makes it ideal for signal generator for software radio. The digital circuits used to implement signal-processing functions do not suffer the effects of thermal drift, aging and component variations associated with their analog counterparts. The implementation of digital functional blocks makes it possible to achieve a high degree of system integration. Recent advances in IC fabrication technology, particularly CMOS, coupled with advanced DSP algorithms and architectures are providing possible single-chip DDS solutions to complex communication and signal processing subsystems as modulators, demodulators, local oscillators, programmable clock generators, and chirp generators. The DDS addresses a variety of applications, including cable modems, measurement equipments, arbitrary waveform generators, cellular base stations and wireless local loop base stations.
Direct Digital Synthesizers was written to find possible applications for radio communication systems. It will have appeal for wireless and wireline communication engineers, teachers and students.


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