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A 0.6-V low-power armstrong VCO in 0.18 μm CMOS

✍ Scribed by Cheng-Chen Liu; Sheng-Lyang Jang; Jhao-Jhang Chen; Miin-Horng Juang

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
303 KB
Volume
52
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A low‐power differential voltage‐controlled oscillator (VCO) is proposed and implemented in a 0.18 μm CMOS 1P6M process. It consists of two single‐ended Armstrong oscillators via cross‐coupled transistors to obtain a differential output. At the supply voltage of 0.6 V, the output phase noise of the differential VCO is −120.02 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 3.85 GHz and the figure of merit is −188.5 dBc/Hz. Total VCO core power consumption is 2.1 mW. Tuning range is about 550 MHz, from 3.81 to 4.36 GHz, whereas the control voltage was tuned from 0 to 2.0 V. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 116–119, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24864

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