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On the phase-noise and phase-error performances of multiphase LC CMOS VCOs
Open accessAbstract
This paper presents an analysis of phase noise in multiphase LC oscillators, and measurement results for several CMOS quadrature-voltage-controlled-oscillators (QVCOs) working in the 2-GHz frequency range. The phase noise data for a so-called BS-QVCO (-140 dBc/Hz or less at 3 MHz frequency offset from the carrier, for a power consumption of 20.8 mW and a figure-of-merit of 184 dBc/Hz) show that phase noise performances are close to the previously derived limits. A systematic cause of departure from ideal quadrature between QVCO signals is also analyzed and measured experimentally, and a compact LC-tank layout that removes this source of phase error is proposed. A TS-QVCO designed with this technique shows a phase-noise figure-of-merit improvement of 4 dB, compared to a previous implementation. The measured equivalent phase error for all QVCOs is between 0.6/spl deg/ and 1/spl deg/.
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Cites
Jitter and phase noise in ring oscillators
Hajimiri, A., Limotyrakis, S., & Lee, T. H. (1999) · IEEE Journal of Solid-State Circuits · doi:10.1109/4.766813 · Cited by 1,071
Cited by
The Quadrature LC Oscillator: A Complete Portrait Based on Injection Locking
Mirzaei, A., Heidari, M. E., Bagheri, R., Chehrazi, S., & Abidi, A. A. (2007) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.2007.903047 · Cited by 288
Metadata
- Authors
- Andreani, P., & Wang, X.
- Venue
- IEEE Journal of Solid-State Circuits
- Published
- 2004-11
- Volume
- 39
- Issue
- 11
- Pages
- 1883-1893
- ISSN
- 0018-9200 (ISSN-L)
- OpenAlex
- W1998668465
- Cited by
- 212
- References
- 1
- FWCI
- 16.35
- Type
- journal article
- Language
- en
- Open access
- green
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- Andreani, P., & Wang, X. (2004). On the phase-noise and phase-error performances of multiphase LC CMOS VCOs. IEEE Journal of Solid-State Circuits. https://doi.org/10.1109/jssc.2004.835828
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