A low-voltage low-phase-noise bottom-series LC QVCO using capacitor tapping technique

Author

Zhang, Yang ; Liu, Peng ; Luo, Tang-Nian ; Chen, Yi-Jan Emery ; Heo, Deukhyoun

Author_Institution

School of Electrical Engineering and Computer Science, Washington State University, Pullman, USA

fYear

2008

fDate

15-20 June 2008

Firstpage

237

Lastpage

240

Abstract

This paper presents a novel low-voltage low-phase-noise LC quadrature voltage controlled oscillator (QVCO) implemented in the TSMC 0.18-mum CMOS process. By using a combination of bottom-series coupling architecture and capacitor tapping technique, the QVCO achieves a zero resonator phase shift (RPS), a high loaded resonator quality factor, and limited phase noise contribution from the current source, all of which lead to a low phase noise. From a 5.3-GHz carrier, the measured phase noise is -123 dBc/Hz at 1-MHz offset with a 1.8-V power supply and -118 dBc/Hz at 1-MHz offset with a 1-V power supply.

Keywords

CMOS integrated circuits; Q-factor; low-power electronics; phase noise; voltage-controlled oscillators; CMOS process; TSMC; bottom series coupling; capacitor tapping technique; frequency 1 MHz; frequency 5.3 GHz; low voltage low phase noise bottom series LC QVCO; phase noise contribution; quadrature voltage controlled oscillator; resonator phase shift; resonator quality factor; size 0.18 mum; voltage 1 V; voltage 1.8 V; CMOS process; Capacitors; Circuits; Low voltage; Phase noise; Power supplies; Q factor; Transceivers; Voltage-controlled oscillators; Wireless LAN; LC QVCO; low voltage; phase noise; quality factor; resonator phase shift;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2008 IEEE MTT-S International

Conference_Location

Atlanta, GA

ISSN

0149-645X

Print_ISBN

978-1-4244-1780-3

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2008.4633147

Filename

4633147