All Stories

  1. A Comparison of Classifiers for Epileptic Seizure Prediction Based on Heart Rate Variability

    Article • January 2024, Springer Science + Business Media

    Professor Jefferson Luiz Brum Marques, Dr Cesar Ramos Rodrigues

  2. Slippage Classification in Prosthetic Hands with a Spiking Neural Network

    Article • January 2024, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  3. Rail-to-rail input/output bulk driven class AB operational amplifier with improved composite transistors

    Article • Analog Integrated Circuits and Signal Processing, May 2023, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  4. A Two-Stage Single-Ended OTA with Improved Composite Transistors

    Article • October 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  5. CMOS inverter linearization technique with active source degeneration

    Article • October 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  6. A 1.9 nW, Sub-1 V, 542 pA/V Linear Bulk-Driven OTA with 154 dB CMRR for Bio-Sensing Applications

    Article • Journal of Low Power Electronics and Applications, October 2021, MDPI AG

    Dr Cesar Ramos Rodrigues

  7. A 59 pA/V and 62 nW Differential OTA with 0.35% THD for Biomedical Applications

    Article • Journal of Integrated Circuits and Systems, August 2021, Journal of Integrated Circuits and Systems

    Professor Jefferson Luiz Brum Marques, Dr Cesar Ramos Rodrigues

  8. A compact QRS detection system based on 0.79 μW analog CMOS energy-of-derivative circuit

    Article • Microelectronics Journal, July 2021, Elsevier

    Professor Jefferson Luiz Brum Marques, Dr Omid Kavehei, Dr Cesar Ramos Rodrigues

  9. Self-Biased and Supply-Voltage Scalable Inverter-Based Operational Transconductance Amplifier with Improved Composite Transistors

    Article • Electronics, April 2021, MDPI AG

    Dr Cesar Ramos Rodrigues

  10. Touch-and-slippage detection algorithm for prosthetic hands

    Article • Mechatronics, October 2020, Elsevier

    Dr Cesar Ramos Rodrigues

  11. Ultra-Low-Voltage Inverter-Based Operational Transconductance Amplifiers with Voltage Gain Enhancement by Improved Composite Transistors

    Article • Electronics, September 2020, MDPI AG

    Dr Cesar Ramos Rodrigues

  12. Hierarchical Ant Colony for Simultaneous Classifier Selection and Hyperparameter Optimization

    Article • July 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  13. Automated drowsiness detection through wavelet packet analysis of a single EEG channel

    Article • Expert Systems with Applications, August 2016, Elsevier

    Dr Cesar Ramos Rodrigues

  14. Single-channel EEG sleep stage classification based on a streamlined set of statistical features in wavelet domain

    Article • Medical & Biological Engineering & Computing, May 2016, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  15. Direct Feedback Topology for Reducing Residual Voltage in Functional Electrical Stimulation

    Article • August 2015, ACM (Association for Computing Machinery)

    Dr Cesar Ramos Rodrigues

  16. A charge-redistribution based controller for keeping charge balance in neural stimulation

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  17. 0.7 pA/V transconductor allowing Gm-C filters in range of mHz using sub-pF capacitors

    Article • Electronics Letters, July 2015, the Institution of Engineering and Technology (the IET)

    Dr Cesar Ramos Rodrigues

  18. An 8-bit 0.35-V 5.04-fJ/Conversion-Step SAR ADC With Background Self-Calibration of Comparator Offset

    Article • IEEE Transactions on Very Large Scale Integration (VLSI) Systems, July 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  19. Drowsiness detection for single channel EEG by DWT best m-term approximation

    Article • Research on Biomedical Engineering, June 2015, FapUNIFESP (SciELO)

    Dr Cesar Ramos Rodrigues

  20. Comparator-based binary-search ADC architectures for UWB receivers

    Article • Analog Integrated Circuits and Signal Processing, October 2013, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  21. PTAT CMOS current sources mismatch over temperature

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  22. A 2.6V Silicon-on Sapphire CMOS current imbalance sensing circuit for neurostimulation applications

    Article • August 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  23. A 7.8V neurostimulator based on cascoded low-voltage Silicon-on-Sapphire MOS transistors

    Article • August 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  24. Accurate sensor readout circuitry for reliability measurement of hermetically sealed chip-scale biomedical implants

    Article • August 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  25. A 5-bit 1.5GSps calibration-less binary search ADC using threshold reconfigurable comparators

    Article • May 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  26. A self-calibrated 10-bit 1 MSps SAR ADC with reduced-voltage charge-sharing DAC

    Article • May 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  27. Hysteresis settling technique for CMOS comparators based on substrate voltage

    Article • Electronics Letters, January 2013, the Institution of Engineering and Technology (the IET)

    Dr Cesar Ramos Rodrigues

  28. A 749nW 1MSps 8-bit SAR ADC at 0.5V employing boosted switches

    Article • December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  29. A 4-bit 1.5GSps 4.2mW comparator-based binary search ADC in 90nm

    Article • December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  30. A 5MSps 8-bit SAR ADC with single-ended or differential input

    Article • Microelectronics Journal, October 2012, Elsevier

    Dr Cesar Ramos Rodrigues

  31. An IR-UWB transmitter with digital pulse duration control

    Article • May 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  32. PyCO: A parallel genetic algorithm optimization tool for analog circuits

    Article • May 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  33. A 54.2 μW 5 MSps 9-bit ultra-low energy analog-to-digital converter in 180 nm technology

    Article • Analog Integrated Circuits and Signal Processing, December 2011, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  34. A track and hold for single-ended or differential input with adjustable output common mode

    Article • August 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  35. An energy-efficient 1MSps 7µW 11.9fJ/conversion step 7pJ/sample 10-bit SAR ADC in 90nm

    Article • May 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  36. A novel energy efficient digital controller for charge sharing successive approximation ADC

    Article • February 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  37. Resonant modes of tubular shells and their use in ultrasonic linear motors

    Article • November 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  38. A switched current sigma delta modulator using a low distortion feedfoward topology

    Article • August 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  39. Design of an integrated low power high CMRR instrumentation amplifier for biomedical applications

    Article • Analog Integrated Circuits and Signal Processing, July 2008, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  40. Current mode instrumentation amplifier with rail-to-rail input and output

    Article • Analog Integrated Circuits and Signal Processing, June 2008, Springer Science + Business Media

    Dr Cesar Ramos Rodrigues

  41. P6E-5 Analysis of PZT Layer Thickness in Traveling Wave Ultrasonic Motor Performance

    Article • October 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  42. Current mode instrumentation amplifier with rail-to-rail input and output

    Article • September 2007, ACM (Association for Computing Machinery)

    Dr Cesar Ramos Rodrigues

  43. Design of an integrated low power high CMRR instrumentation amplifier for biomedical applications

    Article • January 2007, ACM (Association for Computing Machinery)

    Dr Cesar Ramos Rodrigues

  44. CMOS Energy Harvester Based on a Low-Cost Piezoelectric Acoustic Transducer

    Article • August 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  45. Instrumentation Amplifier using Robust Rail-to-Rail Operational Amplifiers with gm Control

    Article • August 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Cesar Ramos Rodrigues

  46. VHDL control system for linear ultrasonic motors

    Article • March 2006, SPIE

    Dr Cesar Ramos Rodrigues