Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Sabbir A. Osmany"'
Publikováno v:
Analog Integrated Circuits and Signal Processing. 74:545-556
This paper analyses substrate-related spurious tones in fractional-N phase-locked loops with integrated VCOs. Spur positions are calculated and experimentally verified as a function of the divider ratios of prescaler and programmable divider. For an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a88d20b64cf3d250ab1deacf0871a8ce
https://doi.org/10.1007/s10470-012-0002-x
https://doi.org/10.1007/s10470-012-0002-x
Publikováno v:
Analog Integrated Circuits and Signal Processing. 67:319-330
An integrated phase-locked loop (PLL) with low phase noise is presented, which is robust with respect to variations of device parameters with process, supply voltage, and temperature (PVT). The low-noise CMOS voltage-controlled oscillator (VCO) emplo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34359069b8645ebafe341293dab941f7
https://doi.org/10.1007/s10470-011-9622-9
https://doi.org/10.1007/s10470-011-9622-9
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 57:1914-1924
We present an analytical frequency-domain phase-noise model for fractional-N phase-locked loops (PLLs). The model includes the noise of the crystal reference, the reference input buffer, the voltage-controlled oscillator (VCO), the loop filter, charg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f7345cd2a4444f9d9ae13e34f056046
https://doi.org/10.1109/tcsi.2009.2039832
https://doi.org/10.1109/tcsi.2009.2039832
Publikováno v:
Advances in Radio Science, Vol 5, Pp 313-320 (2007)
We present an analytical phase noise model for fractional-N phase-locked loops (PLL) with emphasis on integrated RF synthesizers in the GHz range. The noise of the crystal reference, the voltage-controlled oscillator (VCO), the loop filter, the charg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c717efa02a2beead4d257c68ae089298
http://www.adv-radio-sci.net/5/313/2007/ars-5-313-2007.pdf
http://www.adv-radio-sci.net/5/313/2007/ars-5-313-2007.pdf
Publikováno v:
2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.
We present an integrated fractional-N frequency synthesizer providing in-phase / quadrature phase signal over the frequency bands 0.6–4.6 GHz, 5–7 GHz, 10–14 GHz, and in-phase signal over 20–28 GHz for software-defined radio applications. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81e5b910bcba404feba0a4c51a38c60f
https://doi.org/10.1109/bctm.2011.6082741
https://doi.org/10.1109/bctm.2011.6082741
Publikováno v:
2010 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF).
We present an integrated fractional-N frequency synthesizer providing in-phase / quadrature phase signal over the frequency bands 0.6–4.6 GHz, 5–7 GHz, 10–14 GHz, and in-phase signal over 20–28 GHz for software-defined radio applications. An
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c47a7f95e54959cdb154641ba6856c90
https://doi.org/10.1109/smic.2010.5422947
https://doi.org/10.1109/smic.2010.5422947
Publikováno v:
2009 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.
We present an integrated frequency synthesizer which is able to provide in-phase / quadrature phase signal over the frequency bands 0.6–4.6 GHz, 5–7 GHz, 10–14 GHz, and in-phase signal over 20–28 GHz for software-defined radio applications. F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e41663001bb442bbb116deede659f294
https://doi.org/10.1109/bipol.2009.5314148
https://doi.org/10.1109/bipol.2009.5314148
Autor:
Rudiger Follmann, Sabbir A. Osmany, Frank Herzel, Heinz-Volker Heyer, Klaus Schmalz, Thomas Podrebersek, J. Christoph Scheytt, Wolfgang Winkler
Publikováno v:
2009 IEEE Radio Frequency Integrated Circuits Symposium.
We present a single-chip fractional-N PLL for space applications. The design employs a high-current charge pump with optimum output biasing and a low-current charge pump for extension of the tuning range. We show that the extension of the tuning rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed1e9912b5a5a432eeec486720c5aef0
https://doi.org/10.1109/rfic.2009.5135551
https://doi.org/10.1109/rfic.2009.5135551
Autor:
Thomas Podrebersek, U. Jagdhold, Klaus Schmalz, M. Engels, V. Heyer, D. Kother, Rudiger Follmann, Sabbir A. Osmany, Wolfgang Winkler, T. Kohl, Frank Herzel
Publikováno v:
2008 IEEE MTT-S International Microwave Symposium Digest.
Broad band satellite communication makes high demands on linear low phase noise signals. One example is HDTV. For this application converters are required (e.g. from 30 GHz to 20 GHz), which themselves require very low phase noise programmable synthe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9d1b424ae219ee3c5709cca83e7f1da
https://doi.org/10.1109/mwsym.2008.4633176
https://doi.org/10.1109/mwsym.2008.4633176
Autor:
Frank Herzel, M. Engels, J.C. Scheytt, Sabbir A. Osmany, Klaus Schmalz, Wolfgang Winkler, Srdjan Glisic
Publikováno v:
2008 IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems.
We present a dual-loop PLL architecture for low-noise frequency synthesizers. The approach is experimentally verified for a 48 GHz PLL in 0.25 mum SiGe BiCMOS technology intended for a 60 GHz wireless transceiver. The design employs two parallel char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b566b3fcba21b878e8ca47b82c7fb545
https://doi.org/10.1109/smic.2008.27
https://doi.org/10.1109/smic.2008.27