Navegação Microeletrônica por Autor "Bampi, Sergio"
Resultados 1-20 de 29
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Approximate and timing-speculative hardware design for high-performance and energy-efficient video processing
(2021) [Tese]Since the end of transistor scaling in 2-D appeared on the horizon, innovative circuit design paradigms have been on the rise to go beyond the well-established and ultraconservative exact computing. Many compute-intensive ... -
Architecture exploration and VLSI design of multi-symbol arithmetic encoders for the AV1 coding format
(2023) [Dissertação]To reduce the impact of videos in the global Internet capacity, companies rely upon video coding standards and formats, also known as codecs, to reduce the overall sizes of videos before transmitting or storing them. AV1, ... -
Automação do projeto de módulos CMOS analógicos usando associações trapezoidais de transistores
(2007) [Tese]A metodologia de projeto semi-customizado usando associações trapezoidais de transistores (TATs) é especialmente viável para o projeto de circuitos integrados mistos analógico- digitais. Vários trabalhos foram desenvolvidos ... -
Automated design space exploration of approximate VLSI architectures for low-power tree-based learning models
(2023) [Tese]The evolution in CMOS technology has led to an increased computational capacity of electronic devices, enabling complex applications to be processed in embedded platforms. An example of this is the growth of machine learning ... -
Bandgap voltage references in submicrometer CMOS technology
(2009) [Dissertação]Referências de tensão são blocos fundamentais em uma série de aplicações de sinais mistos e de rádio frequência, como por exemplo, conversores de dados, PLL's e conversores de potência. A implementação CMOS mais usada para ... -
CMOS RFIC amplifiers design for wideband sub-3 GHz and 28-30 GHz millimeter wave applications
(2017) [Tese]This thesis presents two hardware options to help solve the problem of spectrum saturation in wireless communications from 2014 to 2018. Both options require the operation of a Radio Frequency Integrated Circuits (RFIC) ... -
Cross layer energy model of IR-UWB for short-range communication systems
(2019) [Tese]Short-range data communications and microelectronics circuits design are distinct and important fields of knowledge and there are few points of convergence between them in academic research. In the academic literature of ... -
Desenvolvimento da arquitetura dos codificadores de entropia adaptativos CAVLC e CABAC do padrão H.264/AVC
(2012) [Dissertação]Um codificador de entropia é responsável pela representação simbólica de dados de forma a representá-los com um menor número de bits. O H.264/AVC possui três codificadores de entropia: o Exponencial Golomb, o CAVLC que é ... -
Design of analog integrated circuits aiming characterization of radiation and noise
(2015) [Tese]This thesis is focused on two challenges faced by analog integrated circuit designers when predicting the reliability of transistors implemented in modern CMOS processes: radiation and noise. Regarding radiation, the concern ... -
Design of a SAW-Less CMOS discrete-time receiver for bluetooth low energy
(2016) [Tese]Personal mobile communications and the Internet of Things increased the complexity of radio frequency front-end design, in particular due to the requirements for energy autonomy over long periods, which translates into ... -
Design of CMOS active downconversion mixers for gigahertz multi-band and multiple-standard operation
(2014) [Dissertação]The linearity and noise requirements in multi-band multi-standard applications make the design of RF CMOS mixers a very challenging task. In this dissertation two downconversion mixers based on the Gilbert-cell topology ... -
Design of wideband CMOS building block circuits for receivers from 0.5 up to 4 GHz
(2018) [Tese]This thesis has been focused on the design of wideband circuits for multi-band/multistandard receivers. Three projects have been developed during this Ph.D. and are presented in this thesis: the required specifications of ... -
Double-gate nanotransistors in silicon-on-insulator : simulation of sub-20 nm FinFETs
(2012) [Tese]Esta Tese apresenta os resultados da simulação do transporte eletrônico em três dimensões (3D) no nano dispositivo eletrônico conhecido como “SOI-FinFET”. Este dispositivo é um transistor MOS em tecnologia Silício sobre ... -
Energy-efficient algorithms and architectures for multiview video coding
(2012) [Tese]The robust popularization of 3D videos noticed along the last decade, allied to the omnipresence of smart mobile devices handling multimedia-capable features, has led to intense development and research focusing on efficient ... -
Energy-efficient recurrent neural network hardware architecture for heart rate estimation based on photoplethysmography
(2020) [Tese]The increasing power density and the pervasive use of compute-intensive and powerhungry applications demand energy-efficient CMOS design. The quest for energy-efficient systems particularly concerns in wearable devices for ... -
Experimentos em síntese de alto nível orientada à minimização de área e potência
(2019) [Dissertação]O desenvolvimento de CIs complexos representa alto custo de engenharia devido à quantidade de horas consumidas em projeto. O projeto e a fabricação de “Application Specific Integrated Circuits” (ASIC) foi impulsionada pelo ... -
Exploring partial distortion elimination techniques in the sum of absolute differences architecture for HEVC integer motion estimation
(2019) [Dissertação]Digital videos are among the multimedia applications that have been given the most importance in the recent years, leading to the development of better compression techniques at the cost of higher computing requirements. ... -
Gestão e aproximação de dados em sistemas de memórias com NV-RAMs dedicados a codificadores de vídeo eficientes
(2021) [Tese]A codificação e a decodificação de vídeos digitais estão presentes na maioria das apli cações multimídia, principalmente nos sistemas embarcados atuais, atingindo bilhões de usuários principalmente com a popularização dos ... -
Inductorless balun low-noise amplifier (LNA) for RF wideband application to IEEE 802.22
(2014) [Dissertação]A new 50 MHz - 1 GHz low-noise amplifier circuit with high linearity for IEEE 802.22 wireless regional area network (WRAN) is presented. It was implemented without any inductor and offers a differential output for balun ... -
Low power digitally controlled oscillator for IoT applications
(2021) [Dissertação]This work is focused on the design of a Low Power CMOS DCO for IEEE 802.11ah in IoT applications. The design methodology is based on the Unified current-control model (UICM), which is a physics-based model and enables an ...
