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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationConference Proceedings of the International Symposium on Signals, Systems and Electronics
Pages257-260
Number of pages4
Volume1
DOIs
Publication statusPublished - 2010
Event2010 International Symposium on Signals, Systems and Electronics, ISSSE2010 - Nanjing
Duration: 2010 Sep 172010 Sep 20

Other

Other2010 International Symposium on Signals, Systems and Electronics, ISSSE2010
CityNanjing
Period10/9/1710/9/20

Fingerprint

Variable frequency oscillators
Phase noise
Electric power utilization
Networks (circuits)
Bluetooth
Modulation
Degradation
Electric potential

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Liu, Q., Zhao, Y., Sun, J., Kurachi, S., Itoh, N., & Yoshimasu, T. (2010). An ultra low power consumption and low phase noise VCO operating in sub-threshold region. In Conference Proceedings of the International Symposium on Signals, Systems and Electronics (Vol. 1, pp. 257-260). [5607111] https://doi.org/10.1109/ISSSE.2010.5607111

An ultra low power consumption and low phase noise VCO operating in sub-threshold region. / Liu, Qing; Zhao, Yu; Sun, Jiangtao; Kurachi, Satoshi; Itoh, Nobuyuki; Yoshimasu, Toshihiko.

Conference Proceedings of the International Symposium on Signals, Systems and Electronics. Vol. 1 2010. p. 257-260 5607111.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, Q, Zhao, Y, Sun, J, Kurachi, S, Itoh, N & Yoshimasu, T 2010, An ultra low power consumption and low phase noise VCO operating in sub-threshold region. in Conference Proceedings of the International Symposium on Signals, Systems and Electronics. vol. 1, 5607111, pp. 257-260, 2010 International Symposium on Signals, Systems and Electronics, ISSSE2010, Nanjing, 10/9/17. https://doi.org/10.1109/ISSSE.2010.5607111
Liu Q, Zhao Y, Sun J, Kurachi S, Itoh N, Yoshimasu T. An ultra low power consumption and low phase noise VCO operating in sub-threshold region. In Conference Proceedings of the International Symposium on Signals, Systems and Electronics. Vol. 1. 2010. p. 257-260. 5607111 https://doi.org/10.1109/ISSSE.2010.5607111
Liu, Qing ; Zhao, Yu ; Sun, Jiangtao ; Kurachi, Satoshi ; Itoh, Nobuyuki ; Yoshimasu, Toshihiko. / An ultra low power consumption and low phase noise VCO operating in sub-threshold region. Conference Proceedings of the International Symposium on Signals, Systems and Electronics. Vol. 1 2010. pp. 257-260
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