dBc公司
相位噪声
频率合成器
直接数字合成器
分频器
频率偏移
边带
抖动
物理
锁相环
倍频器
无线电频率
偏移量(计算机科学)
电气工程
绝对相位
带宽(计算)
光电子学
电信
工程类
光学
计算机科学
正交频分复用
程序设计语言
频道(广播)
CMOS芯片
作者
Archita Hati,Craig W. Nelson,Corey Barnes,D. Lirette,Tara M. Fortier,Franklyn Quinlan,Jason A. Desalvo,Andrew D. Ludlow,Scott A. Diddams,David A. Howe
出处
期刊:IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control
[Institute of Electrical and Electronics Engineers]
日期:2013-08-31
卷期号:60 (9): 1796-1803
被引量:27
标识
DOI:10.1109/tuffc.2013.2765
摘要
We present the design of a novel, ultralow-phasenoise frequency synthesizer implemented with extremely-lownoise regenerative frequency dividers. This synthesizer generates eight outputs, viz. 1.6 GHz, 320 MHz, 160 MHz, 80 MHz, 40 MHz, 20 MHz, 10 MHz and 5 MHz for an 8 GHz input frequency. The residual single-sideband (SSB) phase noises of the synthesizer at 5 and 10 MHz outputs at 1 Hz offset from the carrier are -150 and -145 dBc/Hz, respectively, which are unprecedented phase noise levels. We also report the lowest values of phase noise to date for 5 and 10 MHz RF signals achieved with our synthesizer by dividing an 8 GHz signal generated from an ultra-stable opticalcomb- based frequency division. The absolute SSB phase noises achieved for 5 and 10 MHz signals at 1 Hz offset are -150 and -143 dBc/Hz, respectively; at 100 kHz offset, they are -177 and -174 dBc/Hz, respectively. The phase noise of the 5 MHz signal corresponds to a frequency stability of approximately 7.6 × 10 -15 at 1 s averaging time for a measurement bandwidth (BW) of 500 Hz, and the integrated timing jitter over 100 kHz BW is 20 fs.
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