Title :
Design of a 2.4-GHz integrated frequency synthesizer
Author :
Wang, Fei ; Zhang, Jianyu ; Wang, Xuan ; Lai, Jinmei ; Sun, Chengshou
Author_Institution :
Microelectron., Fudan Univ., Shanghai, China
Abstract :
A 2.4-GHz integrated frequency synthesizer of PLL-based in 0.35-μm RF process is presented. A fully integrated cross-coupled LC VCO of low phase noise is implemented. Prescaler accompanied with phase-switching is used to eliminate the glitch. The charge-pump having excellent current matching performance and wide output voltage range is achieved. The synthesizer has a frequency tuning range from 2.28 to 2.75 GHz. The simulation results show that it dissipates less than 66mW; settle time is less 100ms; the phase noise is -117dBc/Hz@600KHz.
Keywords :
UHF oscillators; circuit CAD; frequency synthesizers; phase locked loops; voltage-controlled oscillators; 0.35 micron; 2.28 to 2.75 GHz; 2.4 GHz; 600 kHz; PLL; RF process; charge-pump; fully integrated cross-coupled LC VCO; integrated frequency synthesizer; low phase noise; phase-switching; prescaler; Charge pumps; Circuits; Digital control; Frequency conversion; Frequency synthesizers; Phase noise; Spirals; Tuning; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Design Automation Conference, 2005. Proceedings of the ASP-DAC 2005. Asia and South Pacific
Print_ISBN :
0-7803-8736-8
DOI :
10.1109/ASPDAC.2005.1466608
