Politecnico di Milano Dipartimento di Elettronica e Informazione

 

Alfio Zanchi

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Design Issues of LC Tuned Oscillators for Integrated Transceivers

Samori, C.*; Lacaita, A.L.*; Zanchi, A.*; Vita, P.°
 

* Dipartimento di Elettronica ed Informazione - Politecnico di Milano, Italy

° STMicroelectronics RF Design Group - Catania, Italy

    Published in :

Proceedings of the 8th Great Lakes Symposium on VLSI 
(GLS-VLSI ’98)

Location Lafayette, LA (U.S.A.)     Date February 19-21, 1998    ISSN: 0018-9383      on Pages: 264 - 269

,

    Abstract :
 

                VCO for wireless receivers must fulfill tight requirements of phase noise and their 
                complete integration in silicon VLSI technologies is still an open issue due to the low
                quality factor of the inductors. In this paper we address some of the constraints met
                in the design of low noise oscillator stages: the tank topology and its quality factor, the 
                dynamics of the transconductor stage and its loading effects, the limitation resulting 
                from the AM-to-PM conversion.

 

    Subject Terms :
 

                Loaded-Q of LC tank; bipolar transconductor; MOS transconductor; harmonic 
                equivalent impedance; AM-to-PM conversion; varactor tuning.

 

 
 
 
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