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Modeling leakage in sub-micron CMOS technologies /Mortazavi, Behnaz. January 1900 (has links)
Project (M.Eng.) - Simon Fraser University, 2004. / Theses (School of Engineering Science) / Simon Fraser University.
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Leakage power modeling and reduction techniques for nanometer scale VLSI circuits /Au, Yi-ching. January 2004 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 59-61). Also available in electronic version. Access restricted to campus users.
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Gate-to-channel parasitic capacitance minimization and source-drain leakage evaluation in germanium PMOS /Krom, Raymond T. January 2008 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2008. / Typescript. Includes bibliographical references.
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Use of Monotonic Static Logic in Scaled, Leaky CMOS TechnologiesIrez, Kagan January 2015 (has links)
This dissertation explores the characteristics of Monotonic-Static CMOS and its potential applications in leakage reduction in ultra scaled Bulk-Si technology with significant gate leakage currents. Using test circuits consisting of different configurations of 16-bit lookahead adders, we performed a comparison among static, monotonic static and domino logic in terms of various properties including power, delay, noise margin and area. Comparisons were done over a wide range of possible transistor widths to fully characterize the tradeoffs for each circuit type. Experimental results show that MS-CMOS has potential advantages in some situations in terms of stand-by power, evaluation speed and noise margin in such a technology.
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Models and algorithms for statistical timing and power analysis of digital integrated circuitsWang, Wei-Shen, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
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Modeling and reduction of gate leakage during behavioral synthesis of nanoscale CMOS circuits.Velagapudi, Ramakrishna 05 1900 (has links)
The major sources of power dissipation in a nanometer CMOS circuit are capacitive switching, short-circuit current, static leakage and gate oxide tunneling. However, with the aggressive scaling of technology the gate oxide direct tunneling current (gate leakage) is emerging as a prominent component of power dissipation. For sub-65 nm CMOS technology where the gate oxide (SiO2) thickness is very low, the direct tunneling current is the major form of tunneling. There are two contribution parts in this thesis: analytical modeling of behavioral level components for direct tunneling current and propagation delay, and the reduction of tunneling current during behavioral synthesis. Gate oxides of multiple thicknesses are useful in reducing the gate leakage dissipation. Analytical models from first principles to calculate the tunneling current and the propagation delay of behavioral level components is presented, which are backed by BSIM4/5 models and SPICE simulations. These components are characterized for 45 nm technology and an algorithm is provided for scheduling of datapath operations such that the overall tunneling current dissipation of a datapath circuit under design is minimal. It is observed that the oxide thickness that is being considered is very low it may not remain constant during the course of fabrication. Hence the algorithm takes process variation into consideration. Extensive experiments are conducted for various behavioral level benchmarks under various constraints and observed significant reductions, as high as 75.3% (with an average of 64.3%).
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A comparison of the performance of high-voltage insulator materials in a severely polluted coastal environmentVosloo, Wallace L. (Wallace Lockwood) 04 1900 (has links)
Thesis (PhD)--University of Stellenbosch, 2002. / ENGLISH ABSTRACT: The main aim of this research programme was to compare the relative
performance of different insulator materials used in South Africa when subjected
to a severe marine pollution environment. A test programme and procedure, test
facility and instrumentation were established. Some novel instrumentation and
monitoring equipment were developed and built specifically for this research
programme, supported by data analysing software programs. In order to
compare material performance only, all non-material design variables between
the test insulators had to be removed (e.g. creepage distance, connecting length,
inter-shed spacing, profile, etc.). To achieve this some of the test insulators had
to be specially manufactured. Leakage current, electrical discharge activity,
climatic and environmental data was collected successfully over a one-year test
period, starting with new test insulators.
The peak and energy values of the leakage current were identified as the two
main parameters needed to describe the leakage current activity on the test
insulators. A correlation was found between the climatic and environmental data
and the leakage current data, and it was found that the leakage current can be
determined successfully from some of the climatic and environmental parameters
monitored by using multiple regression techniques. Surface conductivity and
energy were found to be the best parameters to show the maximum and
continuous interaction of the insulator material surface with the electrolytic
pollution layer. A natural ageing and pollution test procedure was developed,
which has become a South African standard and is gaining international
acceptance.
A model and hypothesis are proposed to describe the electrical discharge activity
that takes place on the test insulators and explain the difference in leakage
current performance of the various materials.
Keywords: Insulator, Pollution, High Voltage, Leakage current, Material
performance. / AFRIKAANSE OPSOMMING: Die hoofdoel van hierdie navorsingsprogram was om die relatiewe prestasie van
verskillende isolatormateriale wat in Suid-Afrika gebruik word te vergelyk in 'n
swaar besoedelde marine omgewing. 'n Toetsprogram en prosedure, toets
fasiliteit en instrumentasie is gevestig. 'n Paar nuwe instrumente en moniteer
toerusting is ontwikkel en gebou spesifiek vir hierdie navorsingsprogram, gesteun
deur data analise sagteware programme. Ten einde slegs materiaalprestasie te
vergelyk, moes alle nie-materiaal ontwerpsveranderlikes tussen die toetsisolators
verwyder word (bv. kruipafstand, konnekteer lengte, tussen-skerm spasiëring,
profiel, ens.). Om dit reg te kry moes sommige van die toetsisolators spesiaal
vervaardig word. Lekstroom, elektriese ontladingsaktiwiteit, klimaat en
omgewingsdata is suksesvol versameloor 'n een-jaar toetsperiode, beginnende
met nuwe toets isolators.
Die piek en energie waardes van die lekstroom is identifiseer as die twee hoof
parameters wat nodig is om die lekstroomaktiwiteit op die toetsisolators te
beskryf. 'n Korrelasie is gevind tussen die klimaat- en omgewingsdata en die
lekstroom data, en dit is gevind dat die lekstroom data suksesvol bepaal kan
word van sekere van die klimaat- en omgewingsparameters wat gemoniteer is
deur veelvoudige regressie tegnieke te gebruik. Oppervlakskonduktiwiteit en
energie is gevind die beste parameters te wees om die maksimum en kontinue
interaksie van die isolatormateriaaloppervlak met die elektrolitiese
besoedelingslaag aan te toon. 'n Natuurlike veroudering en besoedeling
toetsprosedure is ontwikkel, wat 'n Suid-Afrikaanse standaard geword het en
besig is om internastionale aanvaarding te wen.
'n Model en hipotese word voorgestelom die elektriese ontladingsaktiwiteit wat
op die toetsisolators plaasvind te beskryf en om die verskil in lekstroomprestasie
van die verskeie materiale te verduidelik.
S/eufelwoorde: Isolator, Besoedeling, Hoog Spanning, Leek stroom, Materiaal
prestasie.
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Models and algorithms for statistical timing and power analysis of digital integrated circuitsWang, Wei-Shen 28 August 2008 (has links)
Not available / text
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Models and algorithms for statistical timing and power analysis of digital integrated circuitsWang, Wei-Shen, 1976- 19 August 2011 (has links)
Not available / text
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A comparison of the performance of high-voltage insulator materials in a severely polluted coastal environmentVosloo, Wallace L. (Wallace Lockwood) 04 1900 (has links)
Thesis (PhD)--University of Stellenbosch, 2002. / ENGLISH ABSTRACT: The main aim of this research programme was to compare the relative
performance of different insulator materials used in South Africa when subjected
to a severe marine pollution environment. A test programme and procedure, test
facility and instrumentation were established. Some novel instrumentation and
monitoring equipment were developed and built specifically for this research
programme, supported by data analysing software programs. In order to
compare material performance only, all non-material design variables between
the test insulators had to be removed (e.g. creepage distance, connecting length,
inter-shed spacing, profile, etc.). To achieve this some of the test insulators had
to be specially manufactured. Leakage current, electrical discharge activity,
climatic and environmental data was collected successfully over a one-year test
period, starting with new test insulators.
The peak and energy values of the leakage current were identified as the two
main parameters needed to describe the leakage current activity on the test
insulators. A correlation was found between the climatic and environmental data
and the leakage current data, and it was found that the leakage current can be
determined successfully from some of the climatic and environmental parameters
monitored by using multiple regression techniques. Surface conductivity and
energy were found to be the best parameters to show the maximum and
continuous interaction of the insulator material surface with the electrolytic
pollution layer. A natural ageing and pollution test procedure was developed,
which has become a South African standard and is gaining international
acceptance.
A model and hypothesis are proposed to describe the electrical discharge activity
that takes place on the test insulators and explain the difference in leakage
current performance of the various materials.
Keywords: Insulator, Pollution, High Voltage, Leakage current, Material
performance. / AFRIKAANSE OPSOMMING: Die hoofdoel van hierdie navorsingsprogram was om die relatiewe prestasie van
verskillende isolatormateriale wat in Suid-Afrika gebruik word te vergelyk in 'n
swaar besoedelde marine omgewing. 'n Toetsprogram en prosedure, toets
fasiliteit en instrumentasie is gevestig. 'n Paar nuwe instrumente en moniteer
toerusting is ontwikkel en gebou spesifiek vir hierdie navorsingsprogram, gesteun
deur data analise sagteware programme. Ten einde slegs materiaalprestasie te
vergelyk, moes alle nie-materiaal ontwerpsveranderlikes tussen die toetsisolators
verwyder word (bv. kruipafstand, konnekteer lengte, tussen-skerm spasiëring,
profiel, ens.). Om dit reg te kry moes sommige van die toetsisolators spesiaal
vervaardig word. Lekstroom, elektriese ontladingsaktiwiteit, klimaat en
omgewingsdata is suksesvol versameloor 'n een-jaar toetsperiode, beginnende
met nuwe toets isolators.
Die piek en energie waardes van die lekstroom is identifiseer as die twee hoof
parameters wat nodig is om die lekstroomaktiwiteit op die toetsisolators te
beskryf. 'n Korrelasie is gevind tussen die klimaat- en omgewingsdata en die
lekstroom data, en dit is gevind dat die lekstroom data suksesvol bepaal kan
word van sekere van die klimaat- en omgewingsparameters wat gemoniteer is
deur veelvoudige regressie tegnieke te gebruik. Oppervlakskonduktiwiteit en
energie is gevind die beste parameters te wees om die maksimum en kontinue
interaksie van die isolatormateriaaloppervlak met die elektrolitiese
besoedelingslaag aan te toon. 'n Natuurlike veroudering en besoedeling
toetsprosedure is ontwikkel, wat 'n Suid-Afrikaanse standaard geword het en
besig is om internastionale aanvaarding te wen.
'n Model en hipotese word voorgestelom die elektriese ontladingsaktiwiteit wat
op die toetsisolators plaasvind te beskryf en om die verskil in lekstroomprestasie
van die verskeie materiale te verduidelik.
S/eufelwoorde: Isolator, Besoedeling, Hoog Spanning, Leek stroom, Materiaal
prestasie.
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