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Content Provider | IEEE Xplore Digital Library |
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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 | |
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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