Abstract
In the field of communications, PLL synthesizers playing an increasingly important role. Synthesis is a system, initially the frequency of a series of reference for the entire frequency several times, the reference frequency is usually fixed. This synthesizer called integer N Synthesis. Synthesis technology is constantly advancing, there are a lot of new frequency synthesizer circuit, and in the communications circuits are widely used.
This paper first introduced the concept of the basic lock-in technology, basic principles of hardware-based lock-Synthesis bring the complexity of the project, highlighted the application of simulation software design phase-locked Synthesis of the theory, in papers presented at the end of Model circuit, and simulation.
