Title :
High linearity voltage-controlled oscillator
Author :
Le, Nguyen Phuong Thi ; Low, Ken Tart ; Yao, Libin
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
A linearization technique for CMOS voltage-controlled oscillators (VCOs) is presented. The linearity of the oscillator is improved by applying a feedback loop using a switched-capacitor network as a frequency-to-voltage converter (FVC). The technique is verified by circuit-level simulation using parameters of a 0.35-¿m CMOS technology. After the linearization, the linearity error of VCO can be improved to less than 0.015% for a dynamic range of 60 dB.
Keywords :
CMOS integrated circuits; frequency convertors; switched capacitor networks; voltage-controlled oscillators; CMOS voltage-controlled oscillators; VCO; circuit-level simulation; feedback loop; frequency-to-voltage converter; high linearity voltage-controlled oscillator; linearization technique; size 0.35 mum; switched-capacitor network; CMOS technology; Circuit simulation; Dynamic range; Feedback loop; Frequency conversion; Linearity; Linearization techniques; Switched capacitor networks; Switching converters; Voltage-controlled oscillators; Voltage-controlled oscillator; frequency feedback loop; high linearity;
Conference_Titel :
ASIC, 2009. ASICON '09. IEEE 8th International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-1-4244-3868-6
Electronic_ISBN :
978-1-4244-3870-9
DOI :
10.1109/ASICON.2009.5351417
