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Analog Integrated Circuits and Signal Processing
Lim, C. C.; Ramiah, H.; Yin, J.; Mak, P. I.; Martins, R. P.
2017-06-01
Source PublicationLC-VCOs using spiral inductors with single- and dual-ayer patterned floating shields: a comparative study
ISSN0925-1030
Pages497-502
AbstractThis letter studies and compares class-B VCOs using spiral inductors with the proposed dual-layer patterned floating shield (DL-PFS) and conventional single-layer patterned floating shield (SL-PFS). The proposed DL-PFS technique utilizes two lowest metal layers to effectively reduce the capacitive induced current to the substrate in an on-chip spiral inductor, thereby boosts its Q-factor by 40% when compared with the conventional SL-PFS approach. We fabricated, as a proof of concept, the class-B LC VCOs using the DL-PFS and SL-PFS in 0.13 µm CMOS. Operating at 10 GHz, the VCO with the DL-PFS inductor measures a 3.6 dB phase noise (PN) improvement at the same power consumption of 2.12 mW. Specifically, the VCO with DL-PFS inductor is tunable from 9.3-to-10.1 GHz and measured PN at 10 GHz is −132.5 dBc/Hz at 10 MHz offset while consuming 2.12 mW at the lowest 0.6 V supply. The achieved figure-of-merit (187.4 dBc/Hz@1 MHz offset) compares favorably with the recent state-of-the-art.
KeywordInductor Patterned floating shield Substrate CMOS VCO
URLView the original
Language英語English
The Source to ArticlePB_Publication
PUB ID32374
Fulltext Access
Document TypeJournal article
Corresponding AuthorRamiah, H.
Recommended Citation
GB/T 7714
Lim, C. C.,Ramiah, H.,Yin, J.,et al. Analog Integrated Circuits and Signal Processing[J]. LC-VCOs using spiral inductors with single- and dual-ayer patterned floating shields: a comparative study,2017:497-502.
APA Lim, C. C.,Ramiah, H.,Yin, J.,Mak, P. I.,&Martins, R. P..(2017).Analog Integrated Circuits and Signal Processing.LC-VCOs using spiral inductors with single- and dual-ayer patterned floating shields: a comparative study,497-502.
MLA Lim, C. C.,et al."Analog Integrated Circuits and Signal Processing".LC-VCOs using spiral inductors with single- and dual-ayer patterned floating shields: a comparative study (2017):497-502.
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