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Search Results: 1 - 10 of 146141 matches for " F;Linares-Aranda "
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A noise tolerant technique for submicron dynamic digital circuits
Mendoza-Hernández, F;Linares-Aranda, M;
Revista mexicana de física , 2007,
Abstract: signal integrity issues are a main concern in high performance circuits due to technological advancement. the smaller size of the cmos transistors together with the increasing use of dynamic logic has brought signal integrity issues to the forefront. hence it is necessary to develop noise-tolerant circuit techniques that will tolerate noise effects with slight performance penalties. in this paper a new noise tolerant dynamic digital circuit technique is proposed and demonstrated. simulation results for cmos and gate show that the proposed technique has an improvement in the ante metric of 3.4x over conventional dynamic logic. a one-bit carry look-ahead adder implemented with the proposed technique has been designed and fabricated using an ams 0.35 μm cmos n-well process. the experimental results show the noise immunity improvements of ante by 2.1x over the conventional dynamic circuit.
A noise tolerant technique for submicron dynamic digital circuits
F. Mendoza-Hernández,M. Linares-Aranda
Revista mexicana de física , 2007,
Abstract: Los avances de la tecnología de circuitos integrados CMOS de muy alta escala de integración VLSI (Very-Large Scale Integration) han permitido obtener microprocesadores rápidos y de bajo consumo de potencia aplicables a sistemas portátiles, inalámbricos y multimedia. La obtención de estos microprocesadores ha sido posible gracias al escalamiento de las dimensiones de los transistores y de sus interconexiones. Sin embargo, cuando los circuitos integrados se reducen (escalan), el ruido de acoplamiento entre las interconexiones degrada el desempe o de los sistemas. Debido a esto, es necesario desarrollar técnicas de tolerancia a ruido que reduzcan los efectos del ruido con mínima degradación de desempe o de los circuitos y sistemas. En este artículo se propone una nueva técnica de tolerancia al ruido de acoplamiento. Los resultados muestran que esta técnica mejora la robustez de los circuitos comparada con la obtenida con otras técnicas recientemente publicadas y consideradas de alta tolerancia al ruido de acoplamiento. La efectividad de la técnica propuesta es verificada mediante resultados experimentales obtenidos de un circuito sumador completo dise ado y fabricado utilizando una tecnología CMOS AMS de 0.35 μm.
Osciladores Controlados por Voltaje para la Generación y Distribución Simultánea de Se al de Reloj en Sistemas en Chip
Oscar González Díaz,Mónico Linares-Aranda,Reydezel Torres Torres
Ingenier?-a Electr?3nica, Autom??tica y Comunicaciones , 2010, DOI: 10.1234/rielac.v29i2.30
Synchronization of Integrated Systems on a Chip
Linares-Aranda M.,González-Díaz O.,Salim-Maza M
Ingeniería, investigación y tecnología , 2012,
Abstract: In the present paper, the non-conventional interconnected and coupled ring oscillators approach working as clock distribution networks to synchronize electronic systems on a chip (SoC) is proposed. Typical CMOS (Complementary Metal-Oxide Semiconductor) N-well 0.35 μm Austria Micro Systems process parameters were used for conventional and non-conventional clock distribution nets design and simulation. Experimental results from local and global clock distribution networks fabricated using a CMOS 0.35 μm process show that the use of interconnected rings arrays, as globally asynchronous locally synchronous (GALS) clock distribution networks, represent an appropriate approach due to good performance regarding scalability, low clock-skew, high-speed, faults tolerant and robust under process variations, regularity, and modularity.
New High-Performance Full Adders Using an Alternative Logic Structure
Linares Aranda, Mónico;Aguirre Hernández, Mariano;
Computación y Sistemas , 2011,
Abstract: this paper presents two new high-speed low-power 1-bit full-adder cells using an alternative logic structure, and the logic styles dpl and sr-cpl. the adders were designed using electrical parameters of a 0.35μm complementary metal-oxide-semiconductor (cmos) process, and were compared with various adders published previously, with regards of power-delay product. to validate the performance simulation results of one of the proposed adders, an 8-bits pipelined multiplier was fabricated using a 0.35μm cmos technology, and it showed to provide superior performance.
A Generic MEMS Fabrication Process Based on a Thermal Budget Approach  [PDF]
Carlos Ramón Báez álvarez, álvarez, Mónico Linares Aranda, Alfonso Torres Jácome, Mario Moreno Moreno, Joel Molina Reyes, Carlos Zú?iga Islas, Wilfrido Calleja Arriaga
Journal of Electronics Cooling and Thermal Control (JECTC) , 2016, DOI: 10.4236/jectc.2016.62009
Abstract: A modular and generic monolithic integrated MEMS process for integrating CMOS technology with polysilicon microstructures is presented. The proposed process flow is designed with an intra CMOS approach to fabricate the microstructures into trenches without the need of planarization techniques. After annealing at 1000°C at significant period of time, it is shown that Id-Vg characteristics of the CMOS transistors remain almost unchanged, indicating their robustness to the intra process fabrication for the micromechanical structures. The CMOS module is designed with a 3 μm length as a minimum feature and this process results with a minimum of residual strain and stress on the micromechanical devices (ε = 1.28 × 10-4 and σ = -21 MPa).
Ajuste regional de la distribución GVE en 34 estaciones pluviométricas de la zona Huasteca de San Luis Potosí , México
Campos-Aranda, Daniel F.;
Agrociencia , 2008,
Abstract: the regional probabilistic analysis of annual maximum daily rainfall represents the base of the estimations of flooding when there is no hydrometric information. the regional methods define more precisely the right tail of the distribution of probabilities, which makes it possible rainfall predictions. the present study is based on information of 34 pluviometric stations of the huasteca area in san luis potosí, which have over 30 years of records. the methodology consists in applying four procedures of regional fit of the general extreme values distribution (gev), based on the method of the l moments: 1) stations-years method; 2) fit by moments of weighted heavy probability; 3) method of the median standardized values; 4) fit by regional l moments. it is concluded that the regional methods shown are reliable and that both procedures developed (3 and 4) make it possible to restrict the predictions.
Identificación del número N con base en el método del HUT, en quince cuencas rurales de dos zonas geográficas de México
Campos-Aranda, Daniel F.;
Agrociencia , 2009,
Abstract: this study highlights the importance of floods or design floods in rural watersheds, since they are the basis for dimensioning hydraulic infrastructure built or reviewed in them. then, the complexity of hydrological processes that these floods generate is described. because of this, calibration of any flood prediction method will lead to its most reliable estimation. next, the triangular unit hydrograph (tuh) method is described in detail, as well as the estimation of its design storm based on chen's formula, and the strategy necessary for identifying the n number associated to each of the six return periods processed. identification or calibration was carried out in eight rural watersheds in the hydrological region no. 10 (sinaloa), and seven in partial hydrological region no. 12 (rio santiago), whose watershed areas varied from 97 to 1645 km. later, various factors that influence the results are listed. finally, conclusions are proposed which highlight the importance of this study's numerical results and their systematic regional application during processes of flood estimation in watersheds with no gauging.
Calibración del método racional en ocho cuencas rurales menores de 1,650 km2 de la región hidrológica No. 10 (Sinaloa), México
Campos-Aranda, Daniel F.;
Agrociencia , 2008,
Abstract: the economic importance of the estimation of floods or design flows in the small and medium sized rural watersheds is highlighted, along with the great complexity involved in the hydrological processes they generate. therefore, the calibration of any method of flood prediction would be helpful in obtaining a more reliable estimation. a detailed description is made of the rational method and the strategy necessary for identifying its runoff coefficient associated with the return period, in eight rural watersheds of hydrological region no. 10 (sinaloa), with numerically consistant results. the numerical results are processed to establish a regional procedure or method of runoff estimation in rural watersheds without gaging or with short records which are not recommended for probabilistic analysis, whose predictions are considered reliable. finally, conclusions are made which underline the numerical consistance and accuracy of the developed flood estimation method, and thus the importance of the present study.
Procedimiento para revisión (sin hidrometría) de la seguridad hidrológica de presas peque?as para riego
Campos-Aranda, Daniel F.;
Agrociencia , 2008,
Abstract: in this paper is defined the concept of hydrologic dam safety, and several definitions of watersheds and small dams are cited as the framework for the objective of this study. a description is given of how the available hydrometric information on annual flows and volumes of 16 important mexican dams was processed. based on the results of these analyses, a six-step procedure was formulated to construct slender and flat gamma-type hydrographs for small watersheds for which there is no hydrometric data. with these hydrographs, hydrologic safety of a small dam can be assessed. a numerical contrast application is presented and two conclusions indicate that the procedure is simple and easily applied, and that the results are of vital importance, especially for dams with hydrologic risk for which quantitative solutions are necessary when the dam is to be raised or the capacity of the spillways is to be enlarged. a procedure such as this is important since there are thousands of small irrigation dams in méxico for which this hydrometric information is not available and which urgently require hydrological evaluation.
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