Logic Gates
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. All-Optical Logic Gates Devices based on SPP Coupling between Graphene Sheets
Abstract The aim of this work is to propose all-optical logic gates based on surface plasmon polaritons (SPP's) coupling among spatially separated graphene sheets. This model consists of graphene nanoribbons embedded in silica (SiO2) substrate place in a distance such that allow an efficient coupling between the plasmonic modes of the waveguides. It was nume
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2018-06
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2. Aging aware design techniques and CMOS gate degradation estimative / Técnicas de projeto considerando envelhecimento e estimativa da degradação em portas lógicas CMOS
O advento da utilização de circuitos integrados pela sociedade se deu por dois motivos. O primeiro consiste na miniaturização das dimensões dos dispositivos integrados. Essa miniaturização permitiu a construção de dispositivos menores, mais rápidos e que consomem menos frequência. O outro fator é a utilização da metodologia baseada em bibliotec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Estudo numÃrico da influÃncia da relaxaÃÃo da nÃo-linearidade Kerr e aplicaÃÃes com portas lÃgicas utilizando PAM em componentes de fibras Ãpticas: interferÃmetro de Sagnac e acoplador direcional / Numerical study of the Kerr nonlinearity relaxation influence and aplications with logic gates using PAM in optical fiber devices: Sagnac interferometer and nonlinear directional coupler
Neste trabalho de Tese, foram investigadas caracterÃsticas de operaÃÃo de dois dispositivos Ãpticos, o InterferÃmetro de Sagnac (NOLM) e o Acoplador Direcional NÃo- Linear (NLDC) Duplo SimÃtrico. Com o primeiro dispositivo, trabalhando com pulsos de 10ps , o que equivale a uma largura espectral em banda de 0,1 THz , em duas diferentes aplicaÃÃes: es
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2011
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4. Probabilistic approach for yield analysis of dynamic logic circuits
In deep-submicrometer technologies, process variability challenges the design of high yield integrated circuits. While device critical dimensions and threshold voltage shrink, leakage currents drastically increase, threatening the feasibility of reliable dynamic logic gates. Electrical level statistical characterization of this kind of gates is essential for
Publicado em: 2011
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5. A novel voltage-mode CMOS quaternary logic design
This brief presents a novel kind of voltage-mode CMOS design that uses multiple threshold voltage transistors and three power supply lines to implement quaternary logic gates, showing lower power dissipation and using less area than the present voltage-mode quaternary circuits. Inverter, NMIN, and NMAX gates are simulated with the Spice tool using TSMC 0.18-
Publicado em: 2011
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6. Multiple objective technology independent logic synthesis for multiple output functions through AIG functional composition / Síntese lógica independente de tecnologia visando múltiplos objetivos, aplicada a funções de múltiplas saídas, empregando composição funcional de AIGs
O emprego de ferramentas de automação de projetos de circuitos integrados permitiu que projetos complexos atingissem time-to-market e custos de produção factíveis. Neste contexto, o processo de síntese lógica é uma etapa fundamental no fluxo de projeto. O passo independente de tecnologia (parte do processo de síntese lógica, que é realizada sem co
Publicado em: 2011
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7. AnÃlise de performance de sÃlitons Ãpticos espaÃo-temporais em guia planar com nÃo-linearidade cÃbico quintica periodicamente modulada e circuitos lÃgicos operando nos regimes Kerr instantÃneo e relaxado. / Performance analysis of the spatio-temporal optical solitons in a planar guide with cubic quintic nonlinearity periodically modulated and logic circuits operating in regimes Kerr instantaneous and relaxed.
In this work, the propagation and stability of spatiotemporal optical solitons (or optical bullets) in a planar waveguide with periodically modulated cubic-quintic nonlinearity is presented numerically as a function of the amplitudes of modulation , the frequency of modulation and the propagation distance .With the objective of ensure the stability and preve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2010
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8. Implementação de portas lógicas quânticas em condensados de Bose- Einstein acoplados
It is well established that the dynamics of two coupled Bose-Einstein condensates (BECs) can be described by using the two-mode Hamiltonian. This model takes into account the trap connement and the eects of collisions associated with each condensate. Other eects, as collision between atoms that belong to dierent BECs and detuning has been included in this ap
Publicado em: 2010
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9. An estimation method for gate delay variability in nanometer CMOS technology
In the nanoscale regime of VLSI technology, circuit performance is increasingly affected by variational effects such as process variations, power supply noise, coupling noise and temperature changes. Manufacturing variations may lead to significant discrepancies between designed and fabricated integrated circuits. Due to the shrinking of design dimensions, t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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10. EXPLORAÇÃO DE OPERADORES ARITMÉTICOS NA TRANSFORMADA RÁPIDA DE FOURIER / ARITHMETICS OPERATORS EXPLORATION IN FAST FOURIER TRANSFORM
The power consumption reduction in the fast Fourier transform (FFT) is important because applications in battery-powered embedded systems grows daily. Thus this work focuses on the application of techniques to reduce power in specific projects of FFT algorithms. The goal is to achieve an architectural exploration in the FFT core, the decimation in time butte
Publicado em: 2010
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11. Temporal resources for global quantum computing architectures
Using the methods for optimal simulation of quantum logic gates, we perform a quantitative estimation of the time resources involved in the execution of universal gate sets for the case of three representative models of quantum computation based on global control. The importance of such models stems from the solution to the problem of experimentally addressi
Brazilian Journal of Physics. Publicado em: 2008-12
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12. Particionamento Temporal Acoplado a Escolha de Componentes para AplicaÃÃes de ComputaÃÃo ReconfigurÃvel
Publicado em: 2008