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A 22 GHz cascode CMOS VCO using frequency doubler

✍ Scribed by Bonghyuk Park; Seungsik Lee; Songcheol Hong; Sangsung Choi

Book ID
102519800
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
310 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This paper presents a fully integrated cascode CMOS LC VCO using frequency doubler for oscillating at 22 GHz band. A symmetrical cascode coupling topology is implemented with negative conductance scheme for increasing the quality factor and output swing. Therefore, this architecture improves the phase noise characteristic in 0.18 μm CMOS technology. In order to oscillate at 22 GHz band the frequency doubler (clipper) is used. The measured phase noise is −102.4 dBc/Hz at the 1 MHz offset frequency. The tuning range of 1.32 GHz is obtained with the control voltage from 0.5 to 1.6 V. The current consumption of the VCO and the frequency doubler has 11.8 mA from 1.8 V supply. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2870–2873, 2007; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.22857

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