Low-power, low-phase-noise tuned-input tuned-output VCO with loop gain enhancement

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A negative conductance is proposed to compensate for the loss of an auxiliary LC tank at the drain of a conventional tuned-input tuned-output voltage-controlled oscillator (VCO). This conductance enhances the loop gain of the VCO. The DC current flowing through the negative conductance generator is reused by the VCO to save power. The proposed VCO is fabricated in a 0.18 mu m 1P6M CMOS process. The measurement results show that the phase noise is -120.5 dBc/Hz at 1 MHz offset frequency from the oscillation frequency of 6.08 GHz while dissipating 1.5 mA from a 1.8 V supply with a FOM of -191.9 dBc/Hz.
Publisher
INST ENGINEERING TECHNOLOGY-IET
Issue Date
2012-09
Language
English
Article Type
Article
Keywords

CMOS

Citation

ELECTRONICS LETTERS, v.48, no.19, pp.1192 - 1193

ISSN
0013-5194
DOI
10.1049/el.2012.2118
URI
http://hdl.handle.net/10203/104317
Appears in Collection
EE-Journal Papers(저널논문)
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