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 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 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 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)
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)
This paper focuses on the topological design process of microstructures used in CMOS-MEMS sensors in order to establish the best features of mechanical performance. The structures here described can be fabricated using the design rules from standard CMOS process (On-Semiconductor 0.5 microns, N-well, double polysilicon, double metal), followed by a(More)
We present an electronic system whose architecture follows a neural fuzzy structure for computing in parallel a Fuzzy CMeans 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)
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)
It is well known that software is a powerful tool for circuit simulation and analysis, conceived to verify electronic systems. However, some kind of analyses may not be completed with only one software suit, due to the nature of the system under test. In this work, a technique is presented to overcome some limitations that are present, in particular, when a(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)