An ultra low power consumption and low phase noise VCO operating in sub-threshold region

Qing Liu, Yu Zhao, Jiangtao Sun, Satoshi Kurachi, Nobuyuki Itoh, Toshihiko Yoshimasu

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

In this paper, a voltage controlled oscillator (VCO) with ultra low dc power consumption and low phase noise is proposed for 2.4 GHz Bluetooth. To reduce the dc power consumption, a novel bias circuit is proposed instead of a conventional tail-current circuit to decrease the supply voltage. In addition, the proposed VCO is designed to operate in sub-threshold region for decreasing the operation current. Thus, the dc power consumption is largely reduced. To improve the phase noise, a modified LC-tank is proposed to suppress the harmonic noise modulation and to prevent the phase noise degradation by the down-converted Flick noise. The LC-VCO is simulated using 0.11 μm CMOS technology. The simulation results show a phase noise of -115dBc/Hz at 1MHz offset from the 2.4 GHz carrier frequency with only 0.35 mW power consumption.

本文言語English
ホスト出版物のタイトル2010 International Symposium on Signals, Systems and Electronics, ISSSE2010 - Proceedings
ページ257-260
ページ数4
DOI
出版ステータスPublished - 2010
イベント2010 International Symposium on Signals, Systems and Electronics, ISSSE2010 - Nanjing, China
継続期間: 2010 9 172010 9 20

出版物シリーズ

名前Conference Proceedings of the International Symposium on Signals, Systems and Electronics
1

Conference

Conference2010 International Symposium on Signals, Systems and Electronics, ISSSE2010
CountryChina
CityNanjing
Period10/9/1710/9/20

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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