A quadrature VCO with +/- 50% tuning continuous tuning range is presented. It is based on a core LC-QVCO with +/- 20% tuning range, a single sideband mixer, two frequency dividers and a multiplexer. The circuit has been implemented in a 0.13 um 1.2 V CMOS technology. The additional area with respect to the core LC-QVCO is 100x100 um. Quadrature error is less than 2°; the phase noise is less than -120 dBc/Hz @ 1 MHz offset over the whole tuning range and is mainly due to the LC-QVCO. Spurs are more than 34 dB below the fundamental in the worst case.

D. Guermandi, P. Tortori, E. Franchi Scarselli, A. Gnudi (2005). A 0.83-2.5 GHz Continuously Tunable Quadrature VCO. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 40, 2620-2627 [10.1109/JSSC.2005.857427].

A 0.83-2.5 GHz Continuously Tunable Quadrature VCO

GUERMANDI, DAVIDE;TORTORI, PAOLA;FRANCHI SCARSELLI, ELEONORA;GNUDI, ANTONIO
2005

Abstract

A quadrature VCO with +/- 50% tuning continuous tuning range is presented. It is based on a core LC-QVCO with +/- 20% tuning range, a single sideband mixer, two frequency dividers and a multiplexer. The circuit has been implemented in a 0.13 um 1.2 V CMOS technology. The additional area with respect to the core LC-QVCO is 100x100 um. Quadrature error is less than 2°; the phase noise is less than -120 dBc/Hz @ 1 MHz offset over the whole tuning range and is mainly due to the LC-QVCO. Spurs are more than 34 dB below the fundamental in the worst case.
2005
D. Guermandi, P. Tortori, E. Franchi Scarselli, A. Gnudi (2005). A 0.83-2.5 GHz Continuously Tunable Quadrature VCO. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 40, 2620-2627 [10.1109/JSSC.2005.857427].
D. Guermandi; P. Tortori; E. Franchi Scarselli; A. Gnudi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/23086
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