Title :
Design of PLL frequency synthesizer based on the fourth-order active filter
Author :
Gao, Wei ; Gao, Xudong
Author_Institution :
Space Star Technol. Co., Ltd., China Acad. of Space Technol., Beijing, China
Abstract :
The fourth-order active loop filter is employed to design the PLL frequency synthesizer at S-band in this paper. By using ADIsimPLL3.1 the transfer function and the phase noise are simulated. The testing results of the real circuits performance parameters coincide with the simulated results very well. And it is verified that the high order loop filter can improve the phase-noise of the PLL frequency synthesizer.
Keywords :
active filters; frequency synthesizers; phase locked loops; phase noise; transfer functions; ADIsimPLL3.1; PLL frequency synthesizer; S-band; fourth-order active loop filter; high order loop filter; phase noise; real circuit performance parameter; transfer function;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5606981
