Design and Optimization of Multi-Modulus-Divider for K-Band Fractional-N Frequency Synthesizer

被引:0
|
作者
Wang Z.-C. [1 ]
Wu Z.-B. [1 ]
Qi Q.-W. [1 ]
Wang X.-H. [1 ]
机构
[1] Beijing Silicon SoC Engineering Research Center, School of Information and Electronics, Beijing Institute of Technology, Beijing
关键词
Fractional-N frequency synthesizer; Multi-modulus-divider; Retime circuit technique;
D O I
10.15918/j.tbit1001-0645.2017.329
中图分类号
学科分类号
摘要
A multi-modulus-divider (MMD) was designed based on TSMC 90 nm CMOS process, achieving a division range of the MMD from 32 to 39. The block diagram of MMD, including double-modulus-divider, S counter and P counter were discussed in detail. Time sequence requirement of the P counters with and without retime circuit were analyzed and discussed. The proposed MMD was integrated into a K-band fractional-N frequency synthesizer. The measurement results show that in-band phase noise performance can be optimized about 15 dB through the modified MMD. The measurement results exhibit the phase noise performance can achieve -81.3 dBc/Hz and -72.44 dBc/Hz at 10 kHz frequency offset and 1 kHz frequency offset, respectively. © 2019, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
引用
收藏
页码:1187 / 1191
页数:4
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