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A 1.57 GHz fully integrated very low phase noise quadrature VCO

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2 Author(s)
Vancorenland, P. ; ESAT-MICAS, Heverlee, Belgium ; Steyaert, M.

A very low phase noise quadrature VCO is presented, featuring an inherently better figure of merit than the existing architectures. Through an improved circuit schematic and a special layout technique, the phase noise of the circuit could be lowered to stand amongst the lowest published. The circuit draws 15 mA from a 2 V supply. The phase noise is -136.5 dBc/Hz@600 kHz and the tuning range is 24% wide at a center frequency of 1.57 GHz. The figure of merit outperforms other published QVCOs.

Published in:

VLSI Circuits, 2001. Digest of Technical Papers. 2001 Symposium on

Date of Conference:

14-16 June 2001