Phase Lock Loops and Frequency Synthesis
Chapter One
Basic Equations of the PLLs
1.1 INTRODUCTION
Phase lock loops (PLLs) belong to a larger set of regulation systems. As an independent
research and design field it started in the 1950s and gained major practical
application in cochannel TV. On this occasion, we find one of the first fundamental
papers.
Some 15 years later, we encounter a surveying book by Gardner, still mentioned
and used. Since a dozen books were published on the topic of PLL problems proper
and in connection with frequency synthesis, we would find chapters on PLLs in all
of the relevant books. Here we shall only mention some of them. But the importance
of the topic is testified by the publication of new books on PLLs (e.g., [9-12])
and a wealth of journal articles, the important ones of which will be cited at the relevant
places. A major advantage of modern PLLs is the possibility of a wide ... read full excerpt from Phase Lock Loops and Frequency Synthesis ebook
