Print Email Facebook Twitter A Low-Noise Fractional-N Digital Frequency Synthesizer With Implicit Frequency Tripling for mm-Wave Applications Title A Low-Noise Fractional-N Digital Frequency Synthesizer With Implicit Frequency Tripling for mm-Wave Applications Author Zong, Z. (TU Delft Electronics) Chen, Peng (University College Dublin) Staszewski, R.B. (TU Delft Electronics; University College Dublin) Date 2019 Abstract In this paper, we propose a 60-GHz fractional-N digital frequency synthesizer aimed at reducing its phase noise (PN) at both the flicker (1/f 3 ) and thermal (1/f 2 ) regions while minimizing its power consumption. The digitally controlled oscillator (DCO) fundamentally resonates at 20 GHz and co-generates a strong third harmonic at 60 GHz which is extracted to the output while canceling the 20-GHz fundamental. The latter component is fed back to the frequency dividers in an all-digital phase-locked loop for phase detection, which comprises a pair of digital-to-time and time-to-digital converters with dithering to attenuate fractional spurs. The mechanism of flicker noise upconversion to 1/f 3 PN in the DCO is investigated, and a reduction technique is proposed. The 28-nm CMOS prototype achieves 213-277-fs rms jitter in the 57.5-67.2-GHz tuning range while consuming only 40 mW. The DCO flicker PN corner is record low at 300-400 kHz. Subject 60 GHzAll-digital phase-locked loop (ADPLL)Digital-to-time converter (DTC)Digitally controlled oscillator (DCO)Flicker noiseFlicker noise upconversionFractional spur suppressionFractional-N PLLHarmonic boostingHarmonic extractionImplicit multiplierMm-wave (mmW)Phase noise (PN)Time-to-digital converter (TDC) To reference this document use: http://resolver.tudelft.nl/uuid:556432e9-11a7-47f2-9019-18e7ccc9f1fd DOI https://doi.org/10.1109/JSSC.2018.2883397 ISSN 0018-9200 Source IEEE Journal of Solid State Circuits, 54 (3), 755-767 Part of collection Institutional Repository Document type journal article Rights © 2019 Z. Zong, Peng Chen, R.B. Staszewski Files PDF 52088745.pdf 3.72 MB Close viewer /islandora/object/uuid:556432e9-11a7-47f2-9019-18e7ccc9f1fd/datastream/OBJ/view