A low-phase-noise 5-GHz CMOS quadrature VCO using superharmonic coupling.

A low-phase-noise 5-GHz CMOS quadrature VCO using superharmonic coupling.

A new concept for quadrature coupling of LC oscillators is introduced and demonstrated on a 5-GHz CMOS voltage-controlled oscillator (VCO). It uses the second harmonic of the outputs to couple the oscillators. The technique provides quadrature over a wide tuning range without introducing any increas...

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Bibliographic Details
Published in:IEEE Journal of solid state circuits 38, 7 (2003).
Main Author: Gierkink, S.L.J
Format: Article
Language:English
Subjects:
2.5 V.
5 GHz.
8.75 mA.
CMOS voltage controlled oscillator.
LC oscillator.
Image rejection.
Phase noise.
Power consumption.
Quadrature coupling.
Superharmonic coupling.
Tuning range.