A constant power consumption CMOS LC oscillator using improved high-Q active inductor with wide tuning-range

Ming Juei Wu*, Jyh Neng Yang, Chen-Yi Lee

*Corresponding author for this work

Research output: Contribution to journalConference article

14 Scopus citations

Abstract

An improved CMOS high-Q active inductor and a constant power consumption oscillator with wide tuning-range are presented. The inductor using one feedback resistor results in a gain to improve the Q-value of the inductor and tune the inductance (L). Based on this inductor, a negative resistance LC-tuned oscillator with constant power consumption and wide tuning-range has been designed. The simulation results show that the improved active inductor can achieve the maximum Q-value of 3500. The power consumption of a constant value around 10mW exists in the oscillator. This oscillator also depicts a reasonable phase noise performance of -91dBc/Hz at 600 kHz from 0.8GHz to 3GHz range. Furthermore, the deviation of the phase noise is as small as 6dBc/Hz during this tuning-range.

Original languageEnglish
JournalMidwest Symposium on Circuits and Systems
Volume3
DOIs
StatePublished - 1 Dec 2004
EventThe 2004 47th Midwest Symposium on Circuits and Systems - Conference Proceedings - Hiroshima, Japan
Duration: 25 Jul 200428 Jul 2004

Keywords

  • Active Inductor
  • CMOS
  • LC Oscillator
  • Phase Noise
  • Power Dissipation
  • Q-value

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