A tunable CMOS ring VCO in a wide frequency range

Author

Zhang, Haipeng ; Li, Hao ; Wang, Yang

Author_Institution

Key Lab. of RF Circuit & Syst., Hangzhou Dianzi Univ., Hangzhou, China

fYear

2011

fDate

26-28 July 2011

Firstpage

6475

Lastpage

6478

Abstract

In this paper a tunable CMOS ring VCO (Voltage Controlled oscillator) is presented based on five-stage differential structure in a wide frequency range. The proposed VCO circuit is designed in CSMC 0.5μm CMOS process and simulated with Cadence Spectre. The power supply voltage is 5V. Simulation results indicate that the frequency is tuned from 10.85MHz to 148MHz when the control voltage varies from 1.2 V to 4.8V The phase noise is about -123.8dBc/Hz at 1MHz offset from carrier frequency of 80MHz. The proposed circuitry is simple and easy to be integrated and more suitable for correct timing logic ICs applications.

Keywords

CMOS analogue integrated circuits; VHF oscillators; radiofrequency integrated circuits; voltage-controlled oscillators; CSMC CMOS process; Cadence Spectre; correct timing logic IC; five-stage differential structure; frequency 10.85 MHz to 148 MHz; size 0.5 mum; tunable CMOS ring VCO; voltage 1.2 V to 4.8 V; voltage 5 V; voltage controlled oscillator; CMOS integrated circuits; Delay; Phase noise; Tuning; Voltage control; Voltage-controlled oscillators; phase noise; ring VCO; wide frequency range;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6002383

Filename

6002383