A transconductance-boosted complementary Colpitts voltage-controlled oscillator

A gm‐boosted complementary Colpitts differential voltage‐controlled oscillator (VCO) is proposed and implemented in a 0.18‐μm CMOS 1P6M process.It consists of two single‐ended p‐core Colpitts oscillators via gm‐enhanced cross‐coupled Colpitts transistors to obtain a differential output. At the suppl...

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Bibliographic Details
Published inMicrowave and optical technology letters Vol. 53; no. 5; pp. 1183 - 1186
Main Authors Liu, Cheng-Chen, Jang, Sheng-Lyang, Wang, Cheng-Cih, Juang, Miin-Horng
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.05.2011
Subjects
Carrier frequencies
CMOS
differential Colpitts oscillator
Electric potential
Microwaves
On-line systems
Oscillators
transformers
Tuning
VCO
Voltage
Voltage controlled oscillators
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Summary:A gm‐boosted complementary Colpitts differential voltage‐controlled oscillator (VCO) is proposed and implemented in a 0.18‐μm CMOS 1P6M process.It consists of two single‐ended p‐core Colpitts oscillators via gm‐enhanced cross‐coupled Colpitts transistors to obtain a differential output. At the supply voltage of 1.45 V, the output phase noise of the differential VCO is −119.2 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 8.69 GHz, and the figure of merit is −190.2 dBc/Hz. Total VCO core power consumption is 5.99 mW. Tuning range is 1.01 GHz, from 8.69 to 9.7 GHz, while the control voltage was tuned from 0 to 2.0 V. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1183–1186, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25934
Bibliography:National Chip Implementation Center (CIC)
National Science Council under Contract - No. NSC98-2221-E-011-139; No. CIC
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ArticleID:MOP25934
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content type line 23
ISSN:0895-2477
1098-2760
1098-2760
DOI:10.1002/mop.25934