A low phase noise colpitts VCO for Ku-band applications

Yi Wang, D.M.W. Leenaerts, E. Heijden, van der, Reza Mahmoudi

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

14 Citations (Scopus)


A 12.74 GHz low phase noise Colpitts VCO has been designed and fabricated in a 0.25µm SiGe:C BiCMOS technology. The balanced VCO uses a transformer coupled tank and two additional inductors to reduce the current in the feedback loop. The efficiency of energy transfer from active devices to the tank has been improved by these two methods, which leads to a larger output swing for the same DC current. Measured phase noise is better than -100dBc /Hz at 100 kHz offset over the tuning range from 12.43 to 13.08GHz.
Original languageEnglish
Title of host publicationProceedings of the Bipolar/BiCMOS Circuits and Technology Meeting (BCTM 2012), September 30 - October 3, 2012, Portland, Oregon
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-4673-3020-6
Publication statusPublished - 2012


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