Title :
0.8 mW 1.1–5.6 GHz dual-modulus prescaler based on multi-phase quasi-differential locking divider
Author :
Yu, Xiao Peng ; Lim, Wei Meng ; Lu, Zhi ; Gu, Jhen-Fong ; Liu, Yanbing ; Kiat-Seng, Y.
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
A dual-modulus prescaler based on a multi-phase quasi-differential locking divider is presented. It directly modulates the output in a multi-phase ring oscillator by quasi-differential injection. Dualmodulus operation is achieved by change of the number of injected signals. It is suitable for low supply operation while a wide locking range is obtained. Implemented in a standard 0.18 μm CMOS process, the 4/5 dual-modulus prescaler achieves an operating range of 1.1-5.6 GHz with 0.8 mW measured power consumption from a 1.2 V supply.
Keywords :
CMOS integrated circuits; frequency dividers; oscillators; prescalers; CMOS process; dual-modulus operation; dual-modulus prescaler; frequency 1.1 GHz to 5.6 GHz; multiphase quasi-differential locking divider; multiphase ring oscillator; power 0.8 mW; quasi-differential injection; size 0.18 mum; voltage 1.2 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.8825
