A combined VCO and divide-by-two for low-voltage low-power 1.6 GHz quadrature signal generation

Author

Wang, Shen ; Ha, Dong Sam ; Kim, Beomsup ; Chawla, Vipul

Author_Institution

Bradley Dept. of ECE, Virginia Tech, Blacksburg, VA, USA

fYear

2011

fDate

19-21 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

In this paper we present a transformer-based differential VCO stacked with a divide-by-two for low-voltage low-power 1.6 GHz quadrature signal generation. The VCO adopts Amstrong VCO configuration to alleviate the small headroom and the noise coupling encountered. The start-up condition and the phase noise performance of the proposed local oscillator (LO) circuitry are analyzed using a linearized small-signal model. The LO was fabricated in TSMC 65 nm CMOS technology. It dissipates only 2.6 mW under 1 V supply voltage, while achieving good phase noise performance.

Keywords

phase noise; signal generators; transformers; voltage-controlled oscillators; CMOS technology; LO; TSMC; armstrong VCO; frequency 1.6 GHz; local oscillator circuitry; low-voltage low-power quadrature signal generation; noise coupling; phase noise performance; power 2.6 mW; size 65 nm; small headroom; start-up condition; CMOS integrated circuits; Coils; Inductance; Phase noise; Voltage-controlled oscillators; VCO; divide-by-two; local oscillator (LO); quadrature signal generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference (CICC), 2011 IEEE

Conference_Location

San Jose, CA

ISSN

0886-5930

Print_ISBN

978-1-4577-0222-8

Type

conf

DOI

10.1109/CICC.2011.6055306

Filename

6055306