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A 5.1-to-7.3 mW, 2.4-to-5 GHz Class-C Mode-Switching Single-Ended-Complementary VCO Achieving >190 dBc/Hz FoM
Lim C.C.2; Ramiah H.2; Yin J.1; Kumar N.2; Mak P.-I.1; Martins R.P.1
2019
Source PublicationIEEE Transactions on Circuits and Systems II: Express Briefs
ISSN15497747
Volume66Issue:2Pages:237-241
Abstract

This brief reports a class-C mode-switching single-ended-complementary (MS-SEC) VCO for wideband operation. Unlike the existing wideband VCOs that utilize nMOS-only $-\text{g}_{\text{m}}$ transistors operating in the class-B mode to maximize the oscillation amplitude, our MS-SEC VCO combines the advantages of class-C mode, which delivers a tall current pulse, together with current-reuse to maximize the current efficiency while lowering the phase noise (PN). The $-{g}_{m}$ transistors are preserved within the saturation region to avoid the inherent trade-off between PN and power consumption for a wideband VCO, as well as the reliability concerns. The VCO prototyped in 130-nm CMOS occupies a die area of 0.33 mm and consumes 5.1-to-7.3 mW at 1.2 V, while covering 2.4-to-5 GHz and meeting the stringent PN specification of the GSM standard with no SAW filter. The results correspond to a figure-of-merit of >190 dBc/Hz throughout the tuning range.

KeywordClass-c Cmos Current-reuse Mode Switching Phase Noise (Pn) Single-ended Complementary (Sec) Voltage-controlled Oscillator (Vco) Wideband
DOIhttp://doi.org/10.1109/TCSII.2018.2848301
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000458017900017
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Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Universidade de Macau
2.University of Malaya
3.Instituto Superior Técnico
Recommended Citation
GB/T 7714
Lim C.C.,Ramiah H.,Yin J.,et al. A 5.1-to-7.3 mW, 2.4-to-5 GHz Class-C Mode-Switching Single-Ended-Complementary VCO Achieving >190 dBc/Hz FoM[J]. IEEE Transactions on Circuits and Systems II: Express Briefs,2019,66(2):237-241.
APA Lim C.C.,Ramiah H.,Yin J.,Kumar N.,Mak P.-I.,&Martins R.P..(2019).A 5.1-to-7.3 mW, 2.4-to-5 GHz Class-C Mode-Switching Single-Ended-Complementary VCO Achieving >190 dBc/Hz FoM.IEEE Transactions on Circuits and Systems II: Express Briefs,66(2),237-241.
MLA Lim C.C.,et al."A 5.1-to-7.3 mW, 2.4-to-5 GHz Class-C Mode-Switching Single-Ended-Complementary VCO Achieving >190 dBc/Hz FoM".IEEE Transactions on Circuits and Systems II: Express Briefs 66.2(2019):237-241.
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