A-187.7-FoM V-band low-power CMOS VCO using modified fT-doubler with current-reused technique

Jian Ying Chen, Hung Ting Chou, Hwann Kaeo Chiou

Research output: Contribution to journalArticlepeer-review

Abstract

A modified fT-doubler with current-reused technique is proposed to realize a low power and low phase noise V-band voltage controlled oscillator (VCO) in a standard 1P9M 90-nm CMOS. The proposed technique not only increases the operation frequency but also reduces the DC power consumption at millimeter-wave frequencies. The short circuit unity gain frequency fT of the modified fT-doubler yields a 31% improvement compared to that of conventional one. Measurement result shows that the designed VCO achieves a phase noise of-115.4 dBc/Hz at 10-MHz offset under a low power consumption of 2 mW. The figure-of-merit is up to-187.7 dBc/Hz.

Original languageEnglish
Pages (from-to)1752-1755
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume57
Issue number7
DOIs
StatePublished - 1 Jul 2015

Keywords

  • current reused
  • modified f-doubler
  • V-band
  • voltage controlled oscillator

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