{"volume":74,"abstract":[{"text":"This paper analyses substrate-related spurious tones in fractional-N phase-\r\nlocked loops with integrated VCOs. Spur positions are calculated and experimentally\r\nverified as a function of the divider ratios of prescaler and programmable divider.\r\nFor an integrated wideband PLL in SiGe BiCMOS technology the spur power levels\r\nare measured and compared with theoretical expectations. The power in these spurs is\r\nminimized by layout techniques shielding the reference input buffer. Spur minimization\r\nby using a variable reference frequency is experimentally demonstrated. Based on this\r\nobservation, a programmable integer-N PLL for driving the fractional-N synthesizer is\r\nsuggested to reduce the worst-case spur level significantly.\r\nIndex Terms — Fractional-N, frequency synthesizers, fractional spurs, substrate\r\nspurs, phase-locked loops (PLLs), phase noise.\r\n","lang":"eng"}],"doi":"10.1007/s10470-012-0002-x","user_id":"15931","citation":{"short":"S.A. Osmany, F. Herzel, C. Scheytt, Analog Integrated Circuits and Signal Processing 74 (2013) 545–556.","ama":"Osmany SA, Herzel F, Scheytt C. Analysis and minimization of substrate spurs in fractional-N frequency synthesizers. <i>Analog Integrated Circuits and Signal Processing</i>. 2013;74(3):545-556. doi:<a href=\"https://doi.org/10.1007/s10470-012-0002-x\">10.1007/s10470-012-0002-x</a>","bibtex":"@article{Osmany_Herzel_Scheytt_2013, title={Analysis and minimization of substrate spurs in fractional-N frequency synthesizers}, volume={74}, DOI={<a href=\"https://doi.org/10.1007/s10470-012-0002-x\">10.1007/s10470-012-0002-x</a>}, number={3}, journal={Analog Integrated Circuits and Signal Processing}, author={Osmany, Sabbir Ahmed and Herzel, Frank and Scheytt, Christoph}, year={2013}, pages={545–556} }","chicago":"Osmany, Sabbir Ahmed, Frank Herzel, and Christoph Scheytt. “Analysis and Minimization of Substrate Spurs in Fractional-N Frequency Synthesizers.” <i>Analog Integrated Circuits and Signal Processing</i> 74, no. 3 (2013): 545–56. <a href=\"https://doi.org/10.1007/s10470-012-0002-x\">https://doi.org/10.1007/s10470-012-0002-x</a>.","mla":"Osmany, Sabbir Ahmed, et al. “Analysis and Minimization of Substrate Spurs in Fractional-N Frequency Synthesizers.” <i>Analog Integrated Circuits and Signal Processing</i>, vol. 74, no. 3, 2013, pp. 545–56, doi:<a href=\"https://doi.org/10.1007/s10470-012-0002-x\">10.1007/s10470-012-0002-x</a>.","apa":"Osmany, S. A., Herzel, F., &#38; Scheytt, C. (2013). Analysis and minimization of substrate spurs in fractional-N frequency synthesizers. <i>Analog Integrated Circuits and Signal Processing</i>, <i>74</i>(3), 545–556. <a href=\"https://doi.org/10.1007/s10470-012-0002-x\">https://doi.org/10.1007/s10470-012-0002-x</a>","ieee":"S. A. Osmany, F. Herzel, and C. Scheytt, “Analysis and minimization of substrate spurs in fractional-N frequency synthesizers,” <i>Analog Integrated Circuits and Signal Processing</i>, vol. 74, no. 3, pp. 545–556, 2013, doi: <a href=\"https://doi.org/10.1007/s10470-012-0002-x\">10.1007/s10470-012-0002-x</a>."},"department":[{"_id":"58"}],"date_created":"2021-09-14T09:22:30Z","title":"Analysis and minimization of substrate spurs in fractional-N frequency synthesizers","related_material":{"link":[{"relation":"confirmation","url":"https://www.researchgate.net/publication/233895658_Analysis_and_minimization_of_substrate_spurs_in_fractional-N_frequency_synthesizers"}]},"publication":"Analog Integrated Circuits and Signal Processing","issue":"3","page":"545-556","type":"journal_article","year":"2013","_id":"24352","intvolume":"        74","language":[{"iso":"eng"}],"author":[{"first_name":"Sabbir Ahmed","last_name":"Osmany","full_name":"Osmany, Sabbir Ahmed"},{"full_name":"Herzel, Frank","last_name":"Herzel","first_name":"Frank"},{"id":"37144","first_name":"Christoph","full_name":"Scheytt, Christoph","last_name":"Scheytt"}],"status":"public","date_updated":"2022-01-18T10:29:31Z"}