The demand of voltage-controlled oscillators (VCOs) with a broad tuning range can lead to unacceptable degradation of the 1/f^3 phase-noise component if traditional voltage-biased topologies are implemented. In this paper, a novel VCO architecture is proposed, where a segmented transconductor tailors the negative g m depending on the operating range to ensure that flicker-noise up-conversion remains minimal. The implemented oscillator covers both 4G and WiMAX 2.5-GHz operation modes and achieves a 10-dB reduction of the 1/f^3 phase noise without impairing the 1/f^2 phase-noise performance.

A wideband voltage-biased LC oscillator with reduced flicker noise up-conversion

PEPE, FEDERICO;BONFANTI, ANDREA GIOVANNI;LEVANTINO, SALVATORE;SAMORI, CARLO;LACAITA, ANDREA LEONARDO
2013

Abstract

The demand of voltage-controlled oscillators (VCOs) with a broad tuning range can lead to unacceptable degradation of the 1/f^3 phase-noise component if traditional voltage-biased topologies are implemented. In this paper, a novel VCO architecture is proposed, where a segmented transconductor tailors the negative g m depending on the operating range to ensure that flicker-noise up-conversion remains minimal. The implemented oscillator covers both 4G and WiMAX 2.5-GHz operation modes and achieves a 10-dB reduction of the 1/f^3 phase noise without impairing the 1/f^2 phase-noise performance.
2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
9781467360593
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/743169
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