A 0.3 V Cross-Coupled VCO Using Dynamic Threshold MOSFET

Author

Jang, Sheng-Lyang ; Huang, Chuang-Jen ; Hsue, Ching-Wen ; Chang, Chia-Wei

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

Volume

20

Issue

3

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

166

Lastpage

168

Abstract

An ultra-low voltage differential voltage-controlled oscillator (VCO) is designed and implemented in a 0.13 ?? m CMOS 1P8M process. The designed circuit topology is an nMOS-core cross-coupled LC-tank VCO, and a self-generated 2nd harmonic ac signal is coupled to the bodies of MOSFETs to enhance the VCO performance. At the supply voltage of 0.3 V, the output phase noise of the VCO is -116.88 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 3.579 GHz, and the figure of merit is -194.43 dBc/Hz. Total power consumption is 0.225 mW. Tuning range is about 240(770) MHz, from 3.39 to 3.63(4.16) GHz, while the control voltage was tuned from 0 V to 0.3(1.0) V.

Keywords

CMOS integrated circuits; MOSFET; network topology; power consumption; voltage-controlled oscillators; CMOS 1P8M process; circuit topology; dynamic threshold MOSFET; frequency 1 MHz; frequency 3.579 GHz; nMOS-core cross-coupled LC-tank VCO; power 0.225 mW; power consumption; size 0.13 mum; ultra-low voltage differential voltage-controlled oscillator; voltage 0.3 V; 130 nm nMOS; Dynamic threshold voltage; ultra-low voltage; voltage-controlled oscillators (VCOs);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2040220

Filename

5406041