NDLI: A 3 GHz CMOS quadrature oscillator using active superharmonic coupling

Content Provider	IEEE Xplore Digital Library
Author	Jackson, B.R. Saavedra, C.E.
Copyright Year	2007
Description	Author affiliation: Queen's Univ., Kingston (Jackson, B.R.; Saavedra, C.E.)
Abstract	A 3 GHz quadrature oscillator has been designed, fabricated, and measured using CMOS 0.18 mum technology. The oscillator uses an active superharmonic coupling technique to generate the quadrature signals. By using two identical LC differential oscillators with a 180deg relationship enforced between the second-order harmonics that are present at the common- mode nodes, quadrature outputs are obtained at the fundamental frequency. Quadrature oscillations were achieved at 3.0 GHz with a measured output power of -6 dBm. The phase error in the fundamental quadrature outputs is less than 6deg and the power consumption for the core of the oscillator is 7.5 mW. The phase noise performance is -116 dBc/Hz at a 1 MHz offset and the figure of merit is -177 dBc/Hz. The layout for this circuit is very compact at 650 mum times 500 mum.
Starting Page	1109
Ending Page	1112
File Size	410247
Page Count	4
File Format	PDF
ISBN	9782874870019
DOI	10.1109/EUMC.2007.4405392
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-09
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	European Microwave Association
Subject Keyword	Coupling circuits CMOS technology Microwave oscillators Signal generators Phase noise CMOS analog integrated circuits Resistors Frequency conversion Voltage-controlled oscillators MOSFETs Quadrature oscillators Microwave FET oscillators MMICs RF CMOS Superharmonic coupling
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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