Title :
A 5.4-GHz Low-Power Swallow-Conterless Frequency Synthesizer with a Nonliear PFD
Author :
Kuo, Yue-Fang ; Weng, Ro-Min ; Liu, Chun-Yu
Author_Institution :
Dept. of Electr. Eng., Nat. Dong Hwa Univ., Hualien
Abstract :
A 5.4-GHz swallow-counterless CMOS frequency synthesizer with a nonlinear phase frequency detector (PFD) is presented. With the same total division ratio, the proposed divider can effectively decrease the gate-counts so as to consume less power than that of the traditional ones. The designed fast-locked nonlinear PFD can enhance the switching speed while remaining the loop stability unchanged. The phase noise of the frequency synthesizer is -135dBc/Hz at 10 MHz offset in a 0.18mum CMOS process. The switching time is within 5mus. The power consumption is only 7mW with 1.5V supply voltage. The implemented frequency synthesizer occupies a small chip area of 0.78mm2
Keywords :
CMOS integrated circuits; frequency synthesizers; microwave integrated circuits; phase detectors; phase noise; 0.18 micron; 1.5 V; 5 mus; 5.4 GHz; 7 mW; CMOS frequency synthesizer; CMOS process; fast-locked nonlinear PFD; loop stability; low-power swallow-counterless frequency synthesizer; nonlinear phase frequency detector; phase noise; Bandwidth; Charge pumps; Counting circuits; Energy consumption; Frequency conversion; Frequency synthesizers; Phase frequency detector; Phase noise; Stability; Voltage-controlled oscillators;
Conference_Titel :
Very Large Scale Integration, 2006 IFIP International Conference on
Conference_Location :
Nice
Print_ISBN :
3-901882-19-7
DOI :
10.1109/VLSISOC.2006.313261
