✦ LIBER ✦

Low-power self-injection-locked CMOS armstrong voltage-controlled oscillator

✍ Scribed by Sheng-Lyang Jang; Ying-Hsiang Liao; Chia-Wei Chang; M.-H. Juang

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 345 KB
Volume: 53
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.25826

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✦ Synopsis

Abstract

A 7‐GHz NMOS Armstrong cross‐coupled voltage‐controlled oscillator (VCO) is designed and implemented in a 0.18 μm CMOS one‐poly six‐metal (1P6M) process. The differential VCO uses two single‐ended Armstrong oscillators coupled via a pair of cross‐coupled transistors and a pair of varactors, and it also uses the self‐injection locking technique to reduce the phase noise. At the dc drain‐source voltage of 0.6 V, the output phase noise of the VCO is −110.9 dBc/Hz at 1‐MHz offset frequency from the carrier frequency of 7.45 GHz and the figure of merit is −186.26 dBc/Hz. Total VCO core power consumption is 1.614 mW. Tuning range is 1.16 GHz, from 6.42 to 7.58 GHz, while the control voltage was tuned from 0 to 2 V. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:728–731, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25826

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