An analysis of 1/f2 phase noise in bipolar colpitts oscillators (With a digression on bipolar differential-pair LC oscillators)
(2007) In IEEE Journal of Solid-State Circuits 42(2). p.374-384- Abstract
- This work presents an analysis of phase noise in the 1/f(2) region displayed by both single-ended and differential bipolar Colpitts oscillators. Very accurate and rigorous symbolic phase noise expressions are derived, enabling a deeper insight into the major mechanisms of phase noise generation, and providing new tools for design optimization. Phase noise expressions for the cross-coupled differential-pair LC-tank oscillator are derived as well.
The theoretical analysis is validated on a 3 GHz differential bipolar Colpitts VCO implemented in a 0.35 mu m SiGe process. Measurements show a phase noise of -123 dBc/Hz or less at 1 MHz offset frequency from the 2.8-3.1 GHz carrier, for a phase noise figure-of-merit of at least 183... (More) - This work presents an analysis of phase noise in the 1/f(2) region displayed by both single-ended and differential bipolar Colpitts oscillators. Very accurate and rigorous symbolic phase noise expressions are derived, enabling a deeper insight into the major mechanisms of phase noise generation, and providing new tools for design optimization. Phase noise expressions for the cross-coupled differential-pair LC-tank oscillator are derived as well.
The theoretical analysis is validated on a 3 GHz differential bipolar Colpitts VCO implemented in a 0.35 mu m SiGe process. Measurements show a phase noise of -123 dBc/Hz or less at 1 MHz offset frequency from the 2.8-3.1 GHz carrier, for a phase noise figure-of-merit of at least 183 dBc/Hz across the tuning range. A very good agreement between theory, numerical simulations, and. measurements is observed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1051557
- author
- Fard, Ali and Andreani, Pietro LU
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Journal of Solid-State Circuits
- volume
- 42
- issue
- 2
- pages
- 374 - 384
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:33847713392
- ISSN
- 0018-9200
- DOI
- 10.1109/JSSC.2006.889388
- language
- English
- LU publication?
- no
- id
- 6a6676a8-d096-4b1b-a80f-22c5c144ca69 (old id 1051557)
- alternative location
- http://ieeexplore.ieee.org/iel5/4/4077153/04077159.pdf
- date added to LUP
- 2016-04-04 09:05:45
- date last changed
- 2022-01-29 08:12:06
@article{6a6676a8-d096-4b1b-a80f-22c5c144ca69,
abstract = {{This work presents an analysis of phase noise in the 1/f(2) region displayed by both single-ended and differential bipolar Colpitts oscillators. Very accurate and rigorous symbolic phase noise expressions are derived, enabling a deeper insight into the major mechanisms of phase noise generation, and providing new tools for design optimization. Phase noise expressions for the cross-coupled differential-pair LC-tank oscillator are derived as well.<br/><br>
The theoretical analysis is validated on a 3 GHz differential bipolar Colpitts VCO implemented in a 0.35 mu m SiGe process. Measurements show a phase noise of -123 dBc/Hz or less at 1 MHz offset frequency from the 2.8-3.1 GHz carrier, for a phase noise figure-of-merit of at least 183 dBc/Hz across the tuning range. A very good agreement between theory, numerical simulations, and. measurements is observed.}},
author = {{Fard, Ali and Andreani, Pietro}},
issn = {{0018-9200}},
language = {{eng}},
number = {{2}},
pages = {{374--384}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Journal of Solid-State Circuits}},
title = {{An analysis of 1/f2 phase noise in bipolar colpitts oscillators (With a digression on bipolar differential-pair LC oscillators)}},
url = {{http://dx.doi.org/10.1109/JSSC.2006.889388}},
doi = {{10.1109/JSSC.2006.889388}},
volume = {{42}},
year = {{2007}},
}