Ricardo Martins
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View article: A Survey of Machine and Deep Learning Techniques in Analog Integrated Circuit Layout Synthesis
A Survey of Machine and Deep Learning Techniques in Analog Integrated Circuit Layout Synthesis Open
Automatic techniques for analog integrated circuit layout design have been proposed in the literature for over four decades. However, as analog design moves into deep nanometer integration nodes, the increasing number of design rules, the …
View article: The Impact of Climate Change and Water Consumption on the Inflows of Hydroelectric Power Plants in the Central Region of Brazil
The Impact of Climate Change and Water Consumption on the Inflows of Hydroelectric Power Plants in the Central Region of Brazil Open
There is a consensus that climate change has affected society. The increase in temperature and reduction in precipitation for some regions of the world have had implications for the intensity and frequency of extreme events. This scenario …
View article: A Survey of Machine and Deep Learning Techniques in Analog Integrated Circuit Layout Synthesis
A Survey of Machine and Deep Learning Techniques in Analog Integrated Circuit Layout Synthesis Open
Automatic techniques for analog integrated circuit layout design have been proposed in the literature for over four decades. However, as analog design moved into deep nanometer integration nodes, the increasing number of design rules, layo…
View article: Compostos bioativos do alho na resistência à influenza: uma revisão atualizada dos efeitos terapêuticos
Compostos bioativos do alho na resistência à influenza: uma revisão atualizada dos efeitos terapêuticos Open
A gripe é uma enfermidade decorrente do vírus influenza que causa grande problemas de saúde pública, podendo ocasionar doenças graves e até a morte. Como medidas preventivas para minimizar os sintomas, pode-se usar os efeitos terapêuticos …
View article: The Proteolytic Activation, Toxic Effects, and Midgut Histopathology of the Bacillus thuringiensis Cry1Ia Protoxin in Rhynchophorus ferrugineus (Coleoptera: Curculionidae)
The Proteolytic Activation, Toxic Effects, and Midgut Histopathology of the Bacillus thuringiensis Cry1Ia Protoxin in Rhynchophorus ferrugineus (Coleoptera: Curculionidae) Open
The red palm weevil (RPW; Coleoptera: Curculionidae) is a destructive pest affecting palms worldwide, capable of causing significant economic losses and ecological damage in managed palm ecosystems. Current management heavily relies on syn…
View article: HÁBITOS ALIMENTARES ATÍPICOS EM CRIANÇAS COM O DIAGNÓSTICO DO TRANSTORNO DO ESPECTRO AUTISTA
HÁBITOS ALIMENTARES ATÍPICOS EM CRIANÇAS COM O DIAGNÓSTICO DO TRANSTORNO DO ESPECTRO AUTISTA Open
View article: Closing the Gap Between Electrical and Physical Design Steps with an Analog IC Placement Optimizer Enhanced with Machine-Learning-Based Post-Layout Performance Regressors
Closing the Gap Between Electrical and Physical Design Steps with an Analog IC Placement Optimizer Enhanced with Machine-Learning-Based Post-Layout Performance Regressors Open
The design of integrated circuits in the analog spectrum is intricate due to the signals’ continuous nature. Additionally, it is strongly affected by the physical implementation of their devices and interconnections on the layout, a design…
View article: Hemorrhagic Presentation in Primary Central Nervous System Lymphoma: A Case Study
Hemorrhagic Presentation in Primary Central Nervous System Lymphoma: A Case Study Open
BACKGROUND Primary central nervous system diffuse large B-cell lymphoma (DLBCL) is an extremely aggressive brain disease that rarely affects immunocompetent non-elderly patients, particularly with hemorrhagic presentation. Brain magnetic r…
View article: A Tunable Gain and Bandwidth Low-Noise Amplifier with 1.44 NEF for EMG and EOG Biopotential Signal
A Tunable Gain and Bandwidth Low-Noise Amplifier with 1.44 NEF for EMG and EOG Biopotential Signal Open
This paper presents a low-noise inverter-based current-mode instrumentation amplifier with tunable gain and bandwidth for electromyogram (EMG) and electrooculogram (EOG) biopotential signals, targeting low input noise while maintaining low…
View article: PACOSYT: A Passive Component Synthesis Tool Based on Machine Learning and Tailored Modeling Strategies Towards Optimal RF and mm-Wave Circuit Designs
PACOSYT: A Passive Component Synthesis Tool Based on Machine Learning and Tailored Modeling Strategies Towards Optimal RF and mm-Wave Circuit Designs Open
In this paper, the application of regression-based supervised machine learning (ML) methods to the modeling of integrated inductors and transformers is examined. Different ML techniques are used and compared to improve accuracy. However, i…
View article: Behavioral Analysis of Noise and Bandwidth Specifications of Heartbeat Detection Circuits for Ultra Low Power Devices
Behavioral Analysis of Noise and Bandwidth Specifications of Heartbeat Detection Circuits for Ultra Low Power Devices Open
This paper presents the behavioral modeling of three circuit architectures, which are suitable for heartbeat detection in wireless healthcare applications. The developed front-end models implement an analog system that detects the heartbea…
View article: Analog Integrated Circuit Routing Techniques: An Extensive Review
Analog Integrated Circuit Routing Techniques: An Extensive Review Open
Routing techniques for analog and radio-frequency (A/RF) integrated circuit (IC) design automation have been proposed in the literature for over three decades. On those, an extensive set of geometric constraints have already been covered a…
View article: Differentiable Constraints’ Encoding for Gradient-Based Analog Integrated Circuit Placement Optimization
Differentiable Constraints’ Encoding for Gradient-Based Analog Integrated Circuit Placement Optimization Open
Analog IC design is characterized by non-systematic re-design iterations, often requiring partial or complete layout re-design. The layout task usually starts with device placement, where the several performance figures and constraints to …
View article: Exploiting a Deep Learning Toolbox for Human-Machine Feedback towards Analog Integrated Circuit Placement Automation
Exploiting a Deep Learning Toolbox for Human-Machine Feedback towards Analog Integrated Circuit Placement Automation Open
The layout design of analog integrated circuits has been defying all automation attempts, and it is still primarily a handcrafting process carried by circuit designers on traditional layout editing frameworks. This paper presents a toolbox…
View article: Scalable and order invariant analog integrated circuit placement with Attention-based Graph-to-Sequence deep models
Scalable and order invariant analog integrated circuit placement with Attention-based Graph-to-Sequence deep models Open
The design of integrated circuits (ICs) in the analog spectrum is intricate due to the signals' continuous nature. Additionally, it is strongly affected by the physical implementation of their devices on the circuits' layout, a task that h…
View article: Machine Learning Approaches for Transformer Modeling
Machine Learning Approaches for Transformer Modeling Open
Resumen del trabajo presentado a la 18th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD), celebrada en Sardinia (Italia) del 12 al 15 de junio de 2022.
View article: Design of CAN Bus Communication Interfaces for Forestry Machines
Design of CAN Bus Communication Interfaces for Forestry Machines Open
This paper presents the initial developments of new hardware devices targeted for CAN (Controller Area Network) bus communications in forest machines. CAN bus is a widely used protocol for communications in the automobile area. It is also …
View article: Hierarchical Yield-Aware Synthesis Methodology Covering Device-, Circuit-, and System-Level for Radiofrequency ICs
Hierarchical Yield-Aware Synthesis Methodology Covering Device-, Circuit-, and System-Level for Radiofrequency ICs Open
This paper presents an innovative yield-aware synthesis strategy based on a hierarchical
\nbottom-up methodology that uses a multiobjective evolutionary optimization algorithm to design a complete
\nradiofrequency integrated circuit from t…
View article: In-Depth Design Space Exploration of 26.5-to-29.5-GHz 65-nm CMOS Low-Noise Amplifiers for Low-Footprint-and-Power 5G Communications Using One-and- Two -Step Design Optimization
In-Depth Design Space Exploration of 26.5-to-29.5-GHz 65-nm CMOS Low-Noise Amplifiers for Low-Footprint-and-Power 5G Communications Using One-and- Two -Step Design Optimization Open
Low-noise amplifiers (LNAs) play a significant role in modern millimeter-wave (mmWave) integrated circuits for fifth-generation (5G) communications systems. However, the proper analysis of their design tradeoffs that allow for a realistic …
View article: Review: Machine learning techniques in analog/RF integrated circuit design, synthesis, layout, and test
Review: Machine learning techniques in analog/RF integrated circuit design, synthesis, layout, and test Open
View article: Sunlight-Driven CO <sub>2</sub>-to-Fuel Conversion: Exploring Thermal and Electrical Coupling between Photovoltaic and Electrochemical Systems for Optimum Solar-Methane Production
Sunlight-Driven CO <sub>2</sub>-to-Fuel Conversion: Exploring Thermal and Electrical Coupling between Photovoltaic and Electrochemical Systems for Optimum Solar-Methane Production Open
View article: Ready-to-Fabricate RF Circuit Synthesis Using a Layout- and Variability-Aware Optimization-Based Methodology
Ready-to-Fabricate RF Circuit Synthesis Using a Layout- and Variability-Aware Optimization-Based Methodology Open
In this paper, physical implementations and measurement results are presented for several Voltage Controlled Oscillators that were designed using a fully-automated, layout- and variability-aware optimization-based methodology. The methodol…
View article: Committees
Committees Open
View article: Author index
Author index Open
View article: Welcome
Welcome Open
On behalf of its Organizing Committee, it is my pleasure to welcome you to the International Conference on Synthesis, Modeling, Analysis, and Simulation Methods and Applications to Circuit Design (SMACD 2019).SMACD focuses on Design Method…
View article: Author index
Author index Open
View article: Two-Step RF IC Block Synthesis With Preoptimized Inductors and Full Layout Generation In-the-Loop
Two-Step RF IC Block Synthesis With Preoptimized Inductors and Full Layout Generation In-the-Loop Open
In this paper, an analysis of the methodologies proposed in the past years to automate the synthesis of radio-frequency (RF) integrated circuit blocks is presented. In the light of this analysis, and to avoid nonsystematic iterations betwe…
View article: Enhanced systematic design of a voltage controlled oscillator using a two-step optimization methodology
Enhanced systematic design of a voltage controlled oscillator using a two-step optimization methodology Open
View article: Integrated Monitoring of Mola mola Behaviour in Space and Time
Integrated Monitoring of Mola mola Behaviour in Space and Time Open
Over the last decade, ocean sunfish movements have been monitored worldwide using various satellite tracking methods. This study reports the near-real time monitoring of fine-scale (< 10 m) behaviour of sunfish. The study was conducted in …