The Research and Design of the Frequency Synthesizer Based on TD-SCDMA Waveform Generator
Cheng Zhang · 2009
The article firstly gives a brief account of the frequency synthesizer technology,and then conducted the research and the design to the score frequency synthesizer making the use of Sigma-Delta technology.The frequency synthesizer's main sub-units circuits including Σ-Δ modulator,VCO and loop filter.Finally,carried the performance simulation using the ADS software on the designed frequency synthesizer,it indicated that the frequency synthesizer designed might satisfy the 88MHz ～ 132MHz dynamic range of high precision and high stability of the clock signal output,and could achieved the 88MHz ～ 132MHz clock signal dynamic range nimbly through the algorithm.