Phase and Quadrature Pulsed Bias LC-CMOS VCO
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Abstract
Pulsed bias is an attempt to improve the performance of oscillators in integrated circuits as a result of architectural innovation. Given the relatively low value of resonator quality factor achievable on-chip, for a specified bias voltage level, pulsed bias may result in a lower power consumption and in an improvement of the spectral purity of the oscillation. The main drawback of this approach is the need to introduce a certain time delay in order to properly position pulses with respect to oscillation waveform. Delay accumulation requires further energy dissipation and introduce additional jitter. In this paper we present a new architecture capable to avoid unnecessary delay, based on the idea to apply the pulsed bias approach to a quadrature oscillator. A ?rst circuit-level implementation of this concept is presented with simulation results.
- F. X. Kaertner, “Analysis of White and f???Noise in Oscilla-tors,” Inernational Journal of Circuit Theory and Applications, Vol. 18, No. 5, 1990, pp. 485-519. doi:10.1002/cta.4490180505
- A. Hajimiri and T. H. Lee, “A General Theory of Phase Noise in Electrical Oscillators,” IEEE Journal Solid-State Circuits, Vol. 33, No. 2, 1998, pp. 179-194. doi:10.1109/4.658619
- A. Demir, “Floquet Theory and Non-linear Perturbation Analysis Foroscillators with Differen-tial-Algebraic Eq- uations,” International Journal of Circuit and Theory Applications, Vol. 28, No. 2, 2000, pp. 163-185. doi: 10.1002/(SICI)1097007X(200003/04)28:2 3.0.CO;2-K
- A. Carbone, A. Brambilla and F. Palma, “Using Floquet Eigenvectors in the Design of Electronic Oscil-lators,” Em- erging Technologies: Circuits and Systems for 4 G Mo- bile Wireless Communications, No. 6, 23-24 June 2005, pp. 100-103.
- A. Carbone and F. Palma, “Considering Orbital Devia- tions on the Evaluation of Power Density Spectrum of Oscill-Ators,” IEEE Transactions on Circuits and Systems-II: Express Briefs, Vol. 53, No. 6, 2006, pp. 438-442. doi: 10.1109/TCSII.2006.873527
- E. Hegazi, H. Sjoland and A. Abidi, “A Filtering Tech- nique to Lower LC Oscillator Phase Noise,” IEEE Journal of Solid State Circuits, Vol. 36, No. 12, 2001, pp. 1921- 1930. doi:10.1109/4.972142
- B. Soltanian and P. Kinget, “Tail Current Shaping to Improve Phase Noise in LC Voltage Controlled Os- cillators,” IEEE Journal of Solid State Circuits, Vol. 41, No. 8, 2006, pp. 1792-1802. doi:10.1109/JSSC.2006.8772 73
- L. B. Oliveira et al., “Analysis and Design of Quadrature Oscillators,” Springer, Berlin, 2008. doi:10.1007/978-14020-8516-1.
- United States Patent No. US 2008/0218280 A1.
- A. Carbone and F. Palma, “Discontinuity Correction in Piece-Wise-Linear Models of Oscillators for Phase Noise Characterization,” International Journal of Circuit Theory and Applications, Vol. 35, No. 1, 2007, pp. 93-104. doi:10.1002/cta.383
- M. Tiebout, “A Differentially Tuned Quadrature CMOS,” Proceedings of the 26th European Solid-State Circuits Conference, Montreux, 18-22 September 2006.
- J. H. Chang, et al., “A New 6 GHz Fully Integrated Low Power Low Phase Noise LC Quadrature VCO,” Pro- ceedings of 2003 Radio Frequency Integrated Circuits Symposium Philadelphia, Philadelphia, 8-10 June 2003, pp. 295-298.
- F. Yang et al., “A 4.8 GHz CMOS LC Balanced Oscillator with Symmetry Noise Filtering Technique,” International Conference on Solid-State Integrated Circuits Technology, Vol. 2, No. 7, 2004, pp. 1315-1320. doi:10.1109/ICSICT.2004.1436795