Title :
A 640MHz low phase noise reference source
Author :
Song, Yamei ; Li, Chunxiu ; Zequn Duan ; Zhang, Yuan ; Zhang, Feifei
Author_Institution :
Res. Inst. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A 640 MHz low phase noise reference source is developed based on a 2×2 frequency doubler driven by a very low phase noise 160 MHz crystal oscillator. The phase noise at 100 kHz offset frequency from the 640 MHz reference source measured by an HP3047A is _160 dBc/Hz, and the spuriousness is lower than _100 dBc within a 40 MHz offset frequency range.
Keywords :
UHF generation; VHF oscillators; crystal oscillators; frequency multipliers; phase noise; 160 MHz; 640 MHz; frequency doubler; low phase noise crystal oscillator; low phase noise reference source; spuriousness; Circuit noise; Feedback circuits; Filters; Hardware; Low-noise amplifiers; Noise level; Oscillators; Phase noise; Q factor; Resonant frequency;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1495294
