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Frequency Synthesizer With Dual Loop Frequency and Gain Calibration
Huawei Technologies Sweden, Kista, Sweden .
Huawei Technologies Sweden, Kista, Sweden .
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology. (Communication Electronics)ORCID iD: 0000-0003-2117-1178
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
2013 (English)In: IEEE Transactions on Circuits and Systems Part 1: Regular Papers, ISSN 1549-8328, E-ISSN 1558-0806, Vol. 60, no 11, 2911-2919 p.Article in journal (Refereed) Published
Abstract [en]

A 3600-MHz phase-locked loop based frequency synthesizer for UMTS applications has been developed in 0.18 $mu$ m CMOS. It incorporates a VCO frequency and loop-gain calibration technique that allows an integrated VCO frequency tuning range of 28% and a low VCO gain ($K_{rm VCO}$ of 30 MHz/V. The loop-gain calibration can compensate for not only variations in VCO gain and divider modulus, but also charge-pump current and loop filter capacitance to an accuracy of 5%. The PLL settles in 150 $mu$s including frequency and gain calibrations. No switches are used in the loop filter. The output phase noise at 1-MHz offset is ${-}123$ dBc/Hz and the integrated phase error (1 kHz–2 MHz) is 1.26 $^{circ}$.

Place, publisher, year, edition, pages
IEEE , 2013. Vol. 60, no 11, 2911-2919 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-100996DOI: 10.1109/TCSI.2013.2256191OAI: oai:DiVA.org:liu-100996DiVA: diva2:664702
Available from: 2013-11-16 Created: 2013-11-16 Last updated: 2017-12-06

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Serban, AdrianaGong, Shaofang

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