Title :
A 2.4 GHz Quadrature-Input Programmable Fractional Frequency Divider
Author :
Chang, Ka Fai ; Cheng, Kwok-Keung M.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
A 2.4 GHz quadrature-input programmable frequency divider with step size of 0.5 is demonstrated in a standard 0.35 μm CMOS process. Fractional division is realized by phase switching between the cross-coupled divide-by-4 injection-locked frequency divider outputs. The proposed circuit exhibits an operation frequency range from 2.24 to 2.70 GHz and consumes less than 5.13 mW with a 1.5 V supply.
Keywords :
CMOS integrated circuits; UHF integrated circuits; frequency dividers; cross-coupled divide-by-4 injection-locked frequency divider; fractional division; frequency 2.24 GHz to 2.70 GHz; quadrature-input programmable fractional frequency divider; size 0.35 mum; standard CMOS process; voltage 1.5 V; Clocks; Frequency conversion; Frequency synthesizers; Multiplexing; Switches; Transistors; Fractional division ratio; injection-locking; programmable frequency divider; quadrature-input injection;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2089046
