Dual-band low-phase-noise lc-qvco using series coupling and switched biasing techniques

Ho Jun Chang, Ki Won Kim, Jin Hong Park, Tae-Yeoul Yun

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An LC-tank quadrature voltage-controlled oscillator (QVCO) is proposed to achieve frequency-band reconfigurability and low phase noise. In this work, phase noise contributed by the 1/f noise of coupling transistors and tail transistors is noticeably reduced when series coupling and switched biasing techniques are simultaneously adopted. The proposed QVCO was implemented in 0.25-lm triple-well CMOS process for K-PCS and WCDMA bands. Measured results showed a phase noise of -117 dBc/Hz at an offset of 1 MHz and a phase-noise figure-of-merit of -172 dBc/Hz while consuming 8.13 mA from a 2-V power supply.

Original languageEnglish
Pages (from-to)955-960
Number of pages6
JournalAnalog Integrated Circuits and Signal Processing
Volume73
Issue number3
DOIs
StatePublished - 2012 Dec 1

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Phase noise
Variable frequency oscillators
Transistors
Noise figure
Frequency bands

Keywords

  • 1/f noise
  • Dual-band
  • Phase noise
  • QVCO
  • Series coupling
  • Switched biasing

Cite this

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abstract = "An LC-tank quadrature voltage-controlled oscillator (QVCO) is proposed to achieve frequency-band reconfigurability and low phase noise. In this work, phase noise contributed by the 1/f noise of coupling transistors and tail transistors is noticeably reduced when series coupling and switched biasing techniques are simultaneously adopted. The proposed QVCO was implemented in 0.25-lm triple-well CMOS process for K-PCS and WCDMA bands. Measured results showed a phase noise of -117 dBc/Hz at an offset of 1 MHz and a phase-noise figure-of-merit of -172 dBc/Hz while consuming 8.13 mA from a 2-V power supply.",
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Dual-band low-phase-noise lc-qvco using series coupling and switched biasing techniques. / Chang, Ho Jun; Kim, Ki Won; Park, Jin Hong; Yun, Tae-Yeoul.

In: Analog Integrated Circuits and Signal Processing, Vol. 73, No. 3, 01.12.2012, p. 955-960.

Research output: Contribution to journalArticle

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AU - Kim, Ki Won

AU - Park, Jin Hong

AU - Yun, Tae-Yeoul

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