Title :
Optimization of injection locked frequency divider with tunable active inductor
Author :
Jian Kang ; Xiaopeng Yu ; Jianjun Zhou
Author_Institution :
Center for Analog/RF Integrated Circuits (CARFIC), Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
This paper presents an optimized injection locked frequency divider (ILFD) with multiple division ratios. The divider core is composed of a tunable active inductor (TAI) and cross-coupled transistors. Different tuning voltages are applied to control the impedance of this TAI hence to achieve multi-division ratios of 2, 3, 4 and 5. Key considerations such as operating frequency, locking range, power consumption and input sensitivity of this ILFD are analyzed in detail, based on which an optimized ILFD is designed and fabricated in TSMC 65nm CMOS technology. Measurement results show the proposed design exhibits a high figure of merit.
Keywords :
CMOS integrated circuits; frequency dividers; inductors; optimisation; CMOS technology; ILFD; TSMC; cross-coupled transistors; figure of merit; injection locked frequency divider; input sensitivity; locking range; multiple division ratios; operating frequency; optimization; power consumption; tunable active inductor; wavelength 65 nm; Frequency conversion; Inductance; Inductors; Logic gates; Optimization; Oscillators; Transistors; Injection locked frequency divider (ILFD); large locking range; low power; multiple division ratios; tunable active inductor (TAI);
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2012 IEEE International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2303-1
DOI :
10.1109/RFIT.2012.6401618
