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A 4.8–6.8 GHz low phase noise LC VCO in 0.13‐µm CMOS technology
Author(s) -
Wang Yuan,
Gan Shanliang,
Jia Song,
Zhang Xing
Publication year - 2016
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.2182
Subject(s) - phase noise , varicap , dbc , voltage controlled oscillator , cmos , transconductance , electrical engineering , materials science , offset (computer science) , transistor , lc circuit , optoelectronics , voltage , electronic engineering , engineering , physics , computer science , capacitance , capacitor , electrode , quantum mechanics , programming language
Summary This letter presents a novel LC voltage controlled oscillator (VCO) supporting the high‐speed serial transmission standard of RapidIO in 0.13‐µm complementary metal‐oxide semiconductor technology. The low phase noise is achieved through several techniques including current source switching, parallel coupled negative transconductance cell, and varactor bias combination scheme. Measured results of proposed circuit show a low phase noise of −120 dBc/Hz at 1 MHz offset from 6.25 GHz carrier and tuning range of 4.8 ~ 6.8 GHz (34.48%) while consuming 7.4 mW under the supply voltage of 1.2 V. Copyright © 2015 John Wiley & Sons, Ltd.