| Citation: |
Chen Pufeng, Li Zhiqiang, Huang Shuilong, Zhang Haiying, Ye Tianchun. A 3GHz Low-Power and Low-Phase-Noise LC VCO with a Self-Biasing Current Source[J]. Journal of Semiconductors, 2008, In Press.
Chen P F, Li Z Q, Huang S L, Zhang H Y, Ye T C. A 3GHz Low-Power and Low-Phase-Noise LC VCO with a Self-Biasing Current Source[J]. J. Semicond., 2008, 29(11): 2106.
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A 3GHz Low-Power and Low-Phase-Noise LC VCO with a Self-Biasing Current Source
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Abstract
A fully integrated 3GHz low-power and low-phase-noise voltage-controlled oscillator (VCO) with a self-biasing current source was implemented in a standard 0.18μm CMOS process.A trade-off between noise and power was realized through the optimization of the improved current source.The VCO can be tuned from 2.83 to 3.25GHz with a 13.8% tuning range.The measured phase noise at 1MHz offset is -111dBc/Hz at a frequency of 3.22GHz while the core circuit draws less than 2mA from a 1.8V supply voltage.These results make the circuit suitable for a 5GHz wireless local area network (WLAN) receiver and 3.4 to 3.6GHz world interoperability for microwave access (WiMAX) application.-
Keywords:
- 3GHz LC VCO,
- phase noise,
- self-biasing current source,
- CMOS
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References
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