Parametric Analysis of Perfect Matched Layer Model of Finite Difference Time Domain Method

Benavides-Cruz, M.; Nieto-Rodríguez, M.; Enciso-Aguilar, M.; Galaz-Larios, Martha; Sosa-Pedroza, Jorge

doi:10.4028/www.scientific.net/amm.15.139

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…In this paper, the application of the FDTD and PML [6] methods are for a two dimensional and magnetic transversal mode (TM) system, which is our case of study.…”

Section: A Finite Difference Time Domain Methodmentioning

confidence: 99%

Computational simulation of antennas array with 17 elements

Calderón-Ramón

Laguna-Camacho

Martínez-Castillo

et al. 2016

2016 IEEE International Engineering Summit, II Cumbre Internacional De Las Ingenierias (IE-Summit)

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In this study described the use of the previously Finite Difference Time Domain method, for analyze the behavior electromagnetic with a diffractor or Perfect Electric Conductor inside of an antennas circular array of 17 elements, this array consists of one transmission antenna and 16 receiving antennas RX. The system uses a Gaussian pulse as excitation with a frequency of 7.5 GHz. The method solves Maxwell's derivative equations using the finite difference equations. A diffractor is discretized in geometric square form, using the Perfect Electric Conductor conditions for its implementation in the computational algorithm and the analysis of the electromagnetic fields in the same. We used the absorption boundary condition due it is necessary that the electromagnetic waves are absorbed or attenuated, thus truncating its spread outward of the region of calculation. We matched the electric and magnetic fields of system.

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“…In this paper, the application of the FDTD and PML [6] methods are for a two dimensional and magnetic transversal mode (TM) system, which is our case of study.…”

Section: A Finite Difference Time Domain Methodmentioning

confidence: 99%

Computational simulation of antennas array with 17 elements

Calderón-Ramón

Laguna-Camacho

Martínez-Castillo

et al. 2016

2016 IEEE International Engineering Summit, II Cumbre Internacional De Las Ingenierias (IE-Summit)

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“…Las condiciones de frontera de absorción se utilizan para truncar la propagación infinita de una onda electromagnética, de tal forma que al llegar a la frontera de la región de cálculo la onda propagada sufra una atenuación hasta ser completamente "absorbida", el método más utilizado es el Método de Capas Perfectamente Acopladas PML (por sus siglas en inglés), (Berenger, 1994;Sullivan, 2000;Benavides et al, 2009). Actualmente se cuenta con una modificación de este método, propuesto por (Benavides et al, 2010) como una versión modificada del PML y es el que se utiliza en el presente trabajo ya que proporciona la reducción de las ecuaciones que se utilizan para la implementación del método propuesto.…”

Section: Método De Capas Perfectamente Acopladas (Pml)unclassified

Desarrollo De Un Arreglo Circular De Antenas Utilizando Herramientas De Electromagnetismo Computacional

Calderón

Pérez²,

Benavides

et al. 2014

Inf. tecnol.

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ResumenSe presenta el diseño de un arreglo circular de antenas con un difractor de geometría variable colocado en su interior. La idea es disponer de una metodología para la simulación de diversos arreglos circulares de antenas para trabajar en rangos de frecuencias no ionizantes, una limitante de los rayos X en exámenes tales como las mamografías. El arreglo es modelado utilizando herramientas del electromagnetismo computacional: 1) el método de diferencias finitas en el dominio del tiempo, para transformar las ecuaciones diferenciales de Maxwell en ecuaciones de diferencia finita y resolverlas; 2) el método de capas perfectamente acopladas, para establecer las condiciones de frontera de absorción del sistema; y 3) las condiciones de conductor eléctrico perfecto, para modelar el difractor. El algoritmo diseñado asegura que no existen reflexiones espurias que puedan afectar las lecturas de los sensores y el comportamiento electromagnético del sistema. Los resultados muestran que es factible emplear el arreglo de antenas propuesto para el desarrollo de un sistema de detección temprana de cáncer de mama operando con frecuencias no ionizantes. Palabras clave: arreglo circular de antenas, diferencias finitas, capas perfectamente acopladas, electromagnetismo computacional Development of a Circular Antenna Array using Computational Electromagnetics Tools AbstractThe design of a circular antenna array, with a variable geometry diffracting device placed in it. The idea is to develop a methodology for the simulation of circular antenna array to work in frequency non-ionizing ranges, a limitation of X ray exams such as those for early detection of breast cancer. The array is modeled using computational electromagnetics tools: 1) The method of finite differences in time domain, to transform Maxwell differential equations into finite difference equations to solve them. 2) the method of perfectly matched layers, to establish the absorbing boundary conditions of the system and 3) the conditions of perfect electrical conductor to model the diffracting device. The designed algorithm ensures that there are no spurious reflections which could affect the readings of the sensors and the electromagnetic behavior of the system. Results show that the proposed antenna array is suitable for the development of a system for the early detection of breast cancer working at non ionizing frequencies.

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Numerical simulation of metallic nanostructures interacting with electromagnetic fields using the Lorentz–Drude model and FDTD method

Benavides-Cruz¹,

Calderón-Ramón²,

Gómez‐Aguilar

et al. 2016

Int. J. Mod. Phys. C

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In this paper, we present an analysis and modeling of the interaction of electromagnetic fields with metallic nanostructures using computational tools that allow us to study the phenomena that are produced as an electromagnetic field interacts with the nanostructure. The analysis of dielectric systems including metals can be very complicated because of the metal parameters. For this reason, we propose to integrate the dielectric function of the Lorentz-Drude model with the finite difference time-domain (FDTD) method, which will permit to study the surface and internal effects within the metal nanostructure system added to the dielectric system, and the interaction of electromagnetic fields with atoms, ions or molecules excited up to their resonant frequency, which causes transitions among atomic energy levels. We solved the system and showed the results of the simulation for the following case studies, silver nanosphere of 100[Formula: see text]nm in diameter, gold nanorod of 12[Formula: see text]nm in thickness and 30[Formula: see text]nm in length and gold nanogroove of 70[Formula: see text]nm.

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Parametric Analysis of Perfect Matched Layer Model of Finite Difference Time Domain Method

Cited by 4 publications

References 9 publications

Computational simulation of antennas array with 17 elements

Computational simulation of antennas array with 17 elements

Desarrollo De Un Arreglo Circular De Antenas Utilizando Herramientas De Electromagnetismo Computacional

Numerical simulation of metallic nanostructures interacting with electromagnetic fields using the Lorentz–Drude model and FDTD method

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