A 4.6-mW 45-GHz compact-size darlington-pair LC-VCO IN 0.18-μm cmos technology

This work proposes a 45‐GHz Darlington‐pair voltage‐controlled oscillator (VCO) in 0.18‐μm CMOS process. The Darlington‐pair transistors achieve a 10.3‐GHz higher unit gain cutoff frequency (fT) and lower negative resistance than those obtained in single MOS counterpart. This feature lowers the mini...

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Bibliographic Details
Published in:Microwave and optical technology letters 2013-03, Vol.55 (3), p.648-652
Main Authors: Chiou, H.-K., Chou, and H.-T.
Format: Article
Language:English
Subjects:
CMOS
CMOS LC-VCO
cutoff frequency
Darlington-pair
Direct current
Inductors
low power
Microwaves
millimeter wave
Oscillations
Power consumption
Reproduction
Voltage controlled oscillators
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Summary:This work proposes a 45‐GHz Darlington‐pair voltage‐controlled oscillator (VCO) in 0.18‐μm CMOS process. The Darlington‐pair transistors achieve a 10.3‐GHz higher unit gain cutoff frequency (fT) and lower negative resistance than those obtained in single MOS counterpart. This feature lowers the minimum current to start oscillation and hence reduces the power consumption in millimeter‐wave frequency regime. Meanwhile, a high‐Q straight transmission line is used to replace the inductor of the VCO resonator and achieves a good phase noise of −106.3 dBc/Hz at 10 MHz offset. The achieved figure‐of‐merit is −172.7 dBc/Hz while consumes a low direct current (DC) power consumption of 4.6 mW from a 1.5 V supply. The chip size including all pads is 0.19 mm2. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:648–652, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27380
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.27380