Tail current noise suppression in RF CMOS VCOs
(2002) In IEEE Journal of Solid-State Circuits 37(3). p.342-348- Abstract
- This paper presents the experimental results of two different techniques, inductive degeneration and capacitive filtering, for reducing the phase noise in tail-biased RF CMOS voltage-controlled oscillators (VCOs). Both techniques prevent the low-frequency tail current noise from being converted into phase noise. The techniques are applied to two distinct VCO designs, showing that the largest phase noise reduction (up to 6-7 dB at 3-MHz offset frequency from the carrier) is achieved via inductive degeneration. Capacitive filtering, however, also substantially reduces the phase noise at high offset frequencies and may therefore become a valid alternative to inductive degeneration, as discrete capacitors are of more common use than discrete... (More)
- This paper presents the experimental results of two different techniques, inductive degeneration and capacitive filtering, for reducing the phase noise in tail-biased RF CMOS voltage-controlled oscillators (VCOs). Both techniques prevent the low-frequency tail current noise from being converted into phase noise. The techniques are applied to two distinct VCO designs, showing that the largest phase noise reduction (up to 6-7 dB at 3-MHz offset frequency from the carrier) is achieved via inductive degeneration. Capacitive filtering, however, also substantially reduces the phase noise at high offset frequencies and may therefore become a valid alternative to inductive degeneration, as discrete capacitors are of more common use than discrete inductors. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/342917
- author
- Andreani, Pietro LU and Sjöland, Henrik LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- phase noise, CMOS, VCO, RF
- in
- IEEE Journal of Solid-State Circuits
- volume
- 37
- issue
- 3
- pages
- 342 - 348
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000174099700011
- scopus:0036504292
- ISSN
- 0018-9200
- DOI
- 10.1109/4.987086
- language
- English
- LU publication?
- yes
- id
- d1766ae0-11a2-4624-a7d4-30a865c3e19b (old id 342917)
- date added to LUP
- 2016-04-01 16:04:46
- date last changed
- 2024-02-09 16:59:25
@article{d1766ae0-11a2-4624-a7d4-30a865c3e19b, abstract = {{This paper presents the experimental results of two different techniques, inductive degeneration and capacitive filtering, for reducing the phase noise in tail-biased RF CMOS voltage-controlled oscillators (VCOs). Both techniques prevent the low-frequency tail current noise from being converted into phase noise. The techniques are applied to two distinct VCO designs, showing that the largest phase noise reduction (up to 6-7 dB at 3-MHz offset frequency from the carrier) is achieved via inductive degeneration. Capacitive filtering, however, also substantially reduces the phase noise at high offset frequencies and may therefore become a valid alternative to inductive degeneration, as discrete capacitors are of more common use than discrete inductors.}}, author = {{Andreani, Pietro and Sjöland, Henrik}}, issn = {{0018-9200}}, keywords = {{phase noise; CMOS; VCO; RF}}, language = {{eng}}, number = {{3}}, pages = {{342--348}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Journal of Solid-State Circuits}}, title = {{Tail current noise suppression in RF CMOS VCOs}}, url = {{http://dx.doi.org/10.1109/4.987086}}, doi = {{10.1109/4.987086}}, volume = {{37}}, year = {{2002}}, }