Mario Alfredo Reyes-Barranca

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Floating-gate MOS transistors have been widely used in diverse analog and digital applications. One of these is as a charge sensitive device in sensors for pH measurement in solutions or using gates with metals like Pd or Pt for hydrogen sensing. Efforts are being made to monolithically integrate sensors together with controlling and signal processing(More)
In this work, a design for a high G sensor is proposed demonstrating a novel transduction technique that can be fabricated with a standard 0.5μm CMOS technology. No additional modifications to the fabrication steps are needed to achieve a MEMS (Micro-Electro-Mechanical System) accelerometer. The proposed system uses Multiple Input Floating-gate MOS(More)
In this paper, a capacitance structure configured with two plates to be used as a MEMS-sensor is presented. This capacitor was designed primarily for being used in combination with a floating-gate MOS transistor (FGMOS) as the transducer device of an accelerometer. One of the plates of this capacitance structure is fixed and the other plate will move when a(More)
In this paper a modal analysis for a proposed capacitive MEMS accelerometer sensor that can be used as inclinometer, dynamic acceleration or vibration sensor, is shown. An analysis of the effect of frequency over the displacement of the movable electrode is made. Besides, it is shown that the natural frequencies and vibration modes depend on the application(More)
Simulation software is a fundamental tool that should be used when designing systems dealing with circuit interaction, for instance. Nevertheless, there exist some inconveniences that limit and make specific software hard to use in this task. On one side, it may require a large processing hardware capacity, and on the other, simulation time increases(More)
In this paper a two-terminal capacitive structure is presented in which a novel architecture with a double interleaved (interdigitated) scheme is introduced. This structure was originally conceived as a mechanism to achieve a greater capacitance between the plates (terminals) of an integrated capacitor using a relatively smaller design area in the standard(More)
This paper proposes a geometrical criterion for denoising a single-lead ECG signal. It was designed to ease the use of heuristic procedures for removing the most common types of noises from ANSI/AAMI-compliant ECG signals. However, in this paper, only the system-noise was considered to illustrate how this geometrical criterion is applied to the signal. The(More)
Simulation software is a fundamental tool that should be used when designing systems dealing with electro-thermal interaction, for instance. Nevertheless, there exist some inconveniences that limit and make specific software hard to use in this task. On one side, it may require a large processing hardware capacity, and on the other, simulation time(More)
We present an electronic system whose architecture follows a neural fuzzy structure for computing in parallel a Fuzzy C-Means process. The electronic design in this work is oriented to build an analog protoptype employing standard integrated circuits in bipolar technolgy and a floating-gate nMOS transistor array. Estimation of electrical performance of(More)
A methodology is proposed for the design of a 4-Bit Arithmetic Logic Unit (ALU) based on Soft-Hardware-Logic (SHL). The core of the implementation is based on the device known as neu-MOS (ν-MOS), a floating-gate MOS transistor with more than one control gate used for the digital signal processing. This configuration is reconfigurable modifying only(More)