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A Swing-Enhanced Class-D VCO Using a Periodically Time-Varying (PTV) Inductor
Lin, Xiaoqi; Yin, Jun; Mak, Pui In; Martins, Rui P.
2022-03
Source PublicationIEEE Solid-State Circuits Letters
ISSN2573-9603
Volume5Pages:25-28
Abstract

This letter reports the design and analysis of a swing-enhanced class-D voltage-controlled oscillator (VCO) utilizing a periodically time-varying (PTV) inductor to boost the output swing that effectively improves the phase noise (PN) in both 1/f^{2} and 1/f^{3} regions at a low supply voltage ( V_{\mathrm{ DD}} ). Without extra switches, the PTV inductor reuses the original cross-coupled transistors in the class-D oscillator that semiperiodically cancels the magnetic flux between two coupled inductors. Fabricated in 65-nm LP CMOS, the 3.67-to-4.43-GHz VCO prototype measures figure of merits of 192.4 ± 1.5 dBc/Hz at 1-MHz offset frequency and 194.4 ± 0.8 dBc/Hz at 10-MHz offset frequency when the V_{\mathrm{ DD}} varies from 0.3 to 0.4 V.

KeywordClass-d Oscillator Common-mode (Cm) Resonance Flicker Noise Upconversion Periodically Time-varying (Ptv) Inductor Phase Noise (Pn) Voltage-controlled Oscillator (Vco)
DOI10.1109/LSSC.2022.3150293
URLView the original
Indexed ByESCI
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Hardware & Architecture ; Engineering, Electrical & Electronic
WOS IDWOS:000761191100002
Scopus ID2-s2.0-85124744703
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Faculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorYin, Jun
AffiliationDepartment of ECE, State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics and Faculty of Science and Technology, University of Macau, Macau, Macao
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Lin, Xiaoqi,Yin, Jun,Mak, Pui In,et al. A Swing-Enhanced Class-D VCO Using a Periodically Time-Varying (PTV) Inductor[J]. IEEE Solid-State Circuits Letters,2022,5:25-28.
APA Lin, Xiaoqi,Yin, Jun,Mak, Pui In,&Martins, Rui P..(2022).A Swing-Enhanced Class-D VCO Using a Periodically Time-Varying (PTV) Inductor.IEEE Solid-State Circuits Letters,5,25-28.
MLA Lin, Xiaoqi,et al."A Swing-Enhanced Class-D VCO Using a Periodically Time-Varying (PTV) Inductor".IEEE Solid-State Circuits Letters 5(2022):25-28.
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