30-GHz Low-Phase-Noise Scalable Multicore Class-F Voltage-Controlled Oscillators Using Coupled-Line-Based Synchronization Topology

Jiayue Wan, Xiao Li, Zesong Fei, Fang Han, Xiaoran Li, Xinghua Wang*, Zhiming Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this letter, low-phase-nose multicore class-F voltage-controlled oscillators (VCOs) using coupled-lined-based synchronization topology are proposed. Compared to traditional resistance-coupled multicore VCOs, the proposed coupled-line-based topology improves the $Q$ of the small inductors in the millimeter-wave frequency range. Mode ambiguity is eliminated for a robust oscillation startup. Quad-core and oct-core VCO prototypes are designed and implemented in 65-nm CMOS process, which exhibit a measured frequency tuning range of 20.5% centered at 31.32 GHz. The quad-core VCO has a measured phase noise (PN) of -134.33 dBc/Hz and a corresponding FoM of 191.32 dBc/Hz at 10-MHz offset from 28.28 GHz. The oct-core VCO has a measured PN of -137.23 dBc/Hz and a corresponding FoM of 191.08 dBc/Hz at 10-MHz offset from 28.16 GHz.

Original languageEnglish
Pages (from-to)1183-1186
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Volume32
Issue number10
DOIs
Publication statusPublished - 1 Oct 2022

Keywords

  • CMOS
  • Class-F
  • low-phase-noise
  • millimeter-wave (mm-wave)
  • multicore
  • voltage-controlled oscillator (VCO)

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Wan, J., Li, X., Fei, Z., Han, F., Li, X., Wang, X., & Chen, Z. (2022). 30-GHz Low-Phase-Noise Scalable Multicore Class-F Voltage-Controlled Oscillators Using Coupled-Line-Based Synchronization Topology. IEEE Microwave and Wireless Components Letters, 32(10), 1183-1186. https://doi.org/10.1109/LMWC.2022.3170581