Digital Frequency Synthesis Demystified
Bar-Giora Goldberg
LLH Technology Publishing, Eagle Rock VA, 1999, 336 pages
Bar-Giora Goldberg
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odern electronic communications and radar
equipment uses digital techniques to generate appropriate
reference frequencies. This book is an introduction to the
technology and discusses digital phase-locked loops (PLLs)
and direct digital synthesis (DDS). The author is well-versed
in the subject. Considering the fact that the author's native
language is obviously not English, the writing is mostly
understandable and the style is not too bad, except for pages
27-28 where the author ties himself into knots trying to act
politically correct.
The author describes the concepts behind DDS architecture and contrasts it with digital PLL and the older analog technologies. He is particularly enthusiastic about sample-and-hold circuits and fractional-N PLLs, calling the latter ``the most elegant integration of PLL and DDS technologies.'' Whether or not you agree with that assessment, this book provides a clear description of the engineering tradeoffs and advantages of each approach, and introduces the reader to some of the more popular actual devices that have been manufactured. A background in electronics, signal processing or computer design is recommended. The reader is expected to already know how DSS, VCOs and PLLs fit in the overall scheme of things. Contains many oscilloscope tracings and graphs and a CD containing the text of the book in PDF format and some programs written in BASIC.
