124-GHz CMOS quadrature voltage-controlled oscillator with fundamental injection locking

Kyoya Takano, Kosuke Katayama, Takeshi Yoshida, Shuhei Amakawa, Minoru Fujishima

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

2 Citations (Scopus)

Abstract

A 124-GHz injection-locked quadrature voltage-controlled oscillator (ILQVCO) fabricated using a 40-nm CMOS process is presented. It locks onto a fundamental reference signal at 124 GHz generated on-chip from an external reference at 31 GHz, thereby avoiding generation of spurious noise commonly se en in the phase noise spectra of subharmonically injection-locked VCOs. The QVCO's phase noise levels in the free-running and injection-locked conditions are -87 dBc/Hz and -117 dBc/Hz, respectively, at 1-MHz offset. The high fundamental oscillation frequency and the low phase noise are realized by adopting a ring-type topology and transformers for inter-stage impedance matching. The ILQVCO is combined with an on-chip double-balanced quadrature modulator for vector signal generation. A 32QAM signal thus generated achieved a data rate of 25 Gb/s with an error-vector magnitude (EVM) of 5.1%.

Original languageEnglish
Title of host publication2015 IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467371919
DOIs
Publication statusPublished - 2016 Jan 19
Externally publishedYes
Event11th IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Xiamen, Fujian, China
Duration: 2015 Nov 92015 Nov 11

Other

Other11th IEEE Asian Solid-State Circuits Conference, A-SSCC 2015
CountryChina
CityXiamen, Fujian
Period15/11/915/11/11

Keywords

  • CMOS
  • injection locking
  • millimeter wave
  • phase modulation
  • QVCO

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Takano, K., Katayama, K., Yoshida, T., Amakawa, S., & Fujishima, M. (2016). 124-GHz CMOS quadrature voltage-controlled oscillator with fundamental injection locking. In 2015 IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Proceedings [7387510] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASSCC.2015.7387510