Improved switched tuning of differential CMOS VCOs
(2002) In IEEE Transactions on Circuits and Systems - 2, Analog and Digital Signal Processing1992-01-01+01:002004-01-01+01:00 49(5). p.352-355- Abstract
- Varactors for continuous frequency tuning are typically used in LC-oscillators. However, they have some drawbacks for large tuning-ranges, such as high tuning sensitivity causing high sensitivity to noise and disturbances on the control voltage. Furthermore, large metal-oxide-semiconductor (MOS) varactors have high conversion of harmless amplitude noise into harmful phase noise. To reduce these problems a small varactor can be used in combination with MOS-transistors that switch fixed capacitors in and out of the oscillator. The limitations due to the imperfect complementary metal-oxide-semiconductor (CMOS) switches are investigated, and an improved structure for use with the popular differential CMOS LC-oscillator is presented.
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/330085
- author
- Sjöland, Henrik LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- complementary metal-oxide-semiconductor, differential, frequency tuning, oscillator, switched tuning, RF CMOS, (CMOS), varactor, voltage-controlled oscillator (VCO)
- in
- IEEE Transactions on Circuits and Systems - 2, Analog and Digital Signal Processing1992-01-01+01:002004-01-01+01:00
- volume
- 49
- issue
- 5
- pages
- 352 - 355
- publisher
- IEEE--Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000177626600006
- scopus:0036583736
- ISSN
- 1057-7130
- DOI
- 10.1109/TCSII.2002.801415
- language
- English
- LU publication?
- yes
- id
- 3ece31cd-51ee-497f-86f7-af3dc4581ed2 (old id 330085)
- date added to LUP
- 2007-11-14 12:32:51
- date last changed
- 2018-03-11 04:08:03
@article{3ece31cd-51ee-497f-86f7-af3dc4581ed2, abstract = {Varactors for continuous frequency tuning are typically used in LC-oscillators. However, they have some drawbacks for large tuning-ranges, such as high tuning sensitivity causing high sensitivity to noise and disturbances on the control voltage. Furthermore, large metal-oxide-semiconductor (MOS) varactors have high conversion of harmless amplitude noise into harmful phase noise. To reduce these problems a small varactor can be used in combination with MOS-transistors that switch fixed capacitors in and out of the oscillator. The limitations due to the imperfect complementary metal-oxide-semiconductor (CMOS) switches are investigated, and an improved structure for use with the popular differential CMOS LC-oscillator is presented.}, author = {Sjöland, Henrik}, issn = {1057-7130}, keyword = {complementary metal-oxide-semiconductor,differential,frequency tuning,oscillator,switched tuning,RF CMOS,(CMOS),varactor,voltage-controlled oscillator (VCO)}, language = {eng}, number = {5}, pages = {352--355}, publisher = {IEEE--Institute of Electrical and Electronics Engineers Inc.}, series = {IEEE Transactions on Circuits and Systems - 2, Analog and Digital Signal Processing1992-01-01+01:002004-01-01+01:00}, title = {Improved switched tuning of differential CMOS VCOs}, url = {http://dx.doi.org/10.1109/TCSII.2002.801415}, volume = {49}, year = {2002}, }