A wideband voltage-biased LC oscillator with reduced flicker noise up-conversion

Author

Pepe, Federico ; Bonfanti, Andrea ; Levantino, Salvatore ; Samori, Carlo ; Lacaita, Andrea L.

Author_Institution

DEIB, Politec. di Milano, Milan, Italy

fYear

2013

fDate

2-4 June 2013

Firstpage

27

Lastpage

30

Abstract

The demand of voltage-controlled oscillators (VCOs) with a broad tuning range can lead to unacceptable degradation of the 1/f³ phase-noise component if traditional voltage-biased topologies are implemented. In this paper, a novel VCO architecture is proposed, where a segmented transconductor tailors the negative g_m depending on the operating range to ensure that flicker-noise up-conversion remains minimal. The implemented oscillator covers both 4G and WiMAX 2.5-GHz operation modes and achieves a 10-dB reduction of the 1/f³ phase noise without impairing the 1/f² phase-noise performance.

Keywords

1/f noise; 4G mobile communication; WiMax; flicker noise; telecommunication network topology; voltage-controlled oscillators; 1/f3 phase-noise; 4G mobile communication; VCO; WiMAX; reduced flicker noise up-conversion; voltage-biased topologies; voltage-controlled oscillators; wideband voltage-biased LC oscillator; Phase noise; Topology; Transconductance; Tuning; Voltage-controlled oscillators; Voltage-controlled oscillator (VCo); flicker noise; phase noise, AM-to-PM conversion;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2013 IEEE

Conference_Location

Seattle, WA

ISSN

1529-2517

Print_ISBN

978-1-4673-6059-3

Type

conf

DOI

10.1109/RFIC.2013.6569513

Filename

6569513