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Titolo:
Impact of AAC design on phase noise performance of VCOs
Autore:
Zanchi, A; Samori, C; Lacaita, AL; Levantino, S;
Indirizzi:
Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy Politecn Milan Milan Italy I-20133 tron & Informaz, I-20133 Milan, Italy Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy Politecn Milan Milan Italy I-20133 tron & Informaz, I-20133 Milan, Italy CNR, CEQSE, I-20133 Milan, Italy CNR Milan Italy I-20133CNR, CEQSE, I-20133 Milan, Italy
Titolo Testata:
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING
fascicolo: 6, volume: 48, anno: 2001,
pagine: 537 - 547
SICI:
1057-7130(200106)48:6<537:IOADOP>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
OSCILLATORS; AMPLIFIER;
Keywords:
bandlimited stochastic processes; bipolar transistor oscillators; communication circuits; integrated circuit noise; mobile communications; peak detectors; phase noise; voltage-controlled oscillators;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Zanchi, A Texas Instruments Inc, Dallas, TX 75243 USA Texas Instruments Inc Dallas TX USA 75243 Dallas, TX 75243 USA
Citazione:
A. Zanchi et al., "Impact of AAC design on phase noise performance of VCOs", IEEE CIR-II, 48(6), 2001, pp. 537-547

Abstract

The automatic amplitude control (AAC) system is a servo-circuit of voltage-controlled oscillators (VCOs) that proves important for the practical implementation of fully integrated RF front-ends. Nevertheless, the noise contributed by the AAC can degrade the phase noise performance of the oscillator. In this paper, the time-varying noise transfer of the peak detector is analyzed, since it is recognized as the critical noise source in the simple AAC loop taken as reference. A fast rule to predict the noise spectral density at the peak detector output is given that substantially facilitates the estimate of the phase noise degradation on the VCO output. The analysis hasbeen carried out both theoretically and by simulation; experimental validation has also been provided by means of a discrete-components test board. Guidelines for low-noise design of the peak detector of AAC are finally proposed.

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Documento generato il 19/09/20 alle ore 17:21:24