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

fYear

2009

fDate

20-23 Oct. 2009

Firstpage

363

Lastpage

366

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-Â¿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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ASICON.2009.5351417

Filename

5351417