Title
Quality Factor Analysis For Cross-Coupled Lc Oscillators Using A Time-Varying Root Locus
Abstract
An extraction of an effective oscillator Q factor in cross-coupled LC oscillators using time-varying root locus is proposed. The extraction utilizes root computations and analytical expression of the cross-coupled-pair admittance. The methodology permits to investigate the Q-factor degradation mechanisms in large-signal LC oscillators and to compare different oscillator topologies. The obtained effective Q factor is validated through SpectreRF simulations and phase noise measurements of a voltage-controlled oscillator fabricated on a 130-nm process.
Year
DOI
Venue
2012
10.1109/TCSII.2011.2174673
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Keywords
Field
DocType
Oscillator, Q factor, time-varying root locus (TVRL)
Colpitts oscillator,Q factor,Variable-frequency oscillator,Control theory,Phase noise,Root locus,Vackář oscillator,Electronic engineering,Voltage-controlled oscillator,Admittance,Mathematics
Journal
Volume
Issue
ISSN
59
1
1549-7747
Citations 
PageRank 
References 
1
0.43
6
Authors
2
Name
Order
Citations
PageRank
Svetozar S. Broussev1102.27
Nikolay T. Tchamov2177.82