Ultralow Phase Noise and Wideband CMOS VCO Using Symmetrical Body-Bias PMOS Varactors

This letter presents an ultralow phase-noise and wide turning-range CMOS voltage-controlled oscillator (VCO) for 5 GHz WLAN applications. The proposed PMOS-only VCO design with body-bias varactors achieves a tuning range of 20.4% and a phase noise of -138.4 dBc/Hz at 1 MHz offset. The total power co...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2013-02, Vol.23 (2), p.90-92
Main Authors: LU, Kuan-Chung, WANG, Fu-Kang, HORNG, Tzyy-Sheng
Format: Article
Language:English
Subjects:
Applied sciences
Body bias
Circuit properties
CMOS integrated circuits
CMOS voltage-controlled oscillator (VCO)
Design. Technologies. Operation analysis. Testing
Electric, optical and optoelectronic circuits
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Integrated circuits
Noise measurement
Oscillators, resonators, synthetizers
Phase noise
PMOS varactor
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Tuning
tuning range
Varactors
Voltage-controlled oscillators
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Description
Summary:This letter presents an ultralow phase-noise and wide turning-range CMOS voltage-controlled oscillator (VCO) for 5 GHz WLAN applications. The proposed PMOS-only VCO design with body-bias varactors achieves a tuning range of 20.4% and a phase noise of -138.4 dBc/Hz at 1 MHz offset. The total power consumption of the VCO core is 13.1 mW using a 1.8 V supply voltage. The achieved figure of merit with tuning range (FOM T ) is -207.2 for the proposed CMOS VCO.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2013.2239635