TY - JOUR
T1 - Use of the perfect electric conductor boundary conditions to discretize a diffractor in FDTD/PML environment
AU - Caldeŕon-Ramón, C.
AU - Gómez-Aguilar, J. F.
AU - Rodríguez-Achach, M.
AU - Morales- Mendoza, L. J.
AU - Laguna-Camacho, J. R.
AU - Benavides-Cruz, M.
AU - Cruz-Orduna, M. I.
AU - González-Lee, M.
AU - Pérez-Meana, H.
AU - Enciso-Aguilar, M.
AU - Chávez-Pérez, R.
AU - Martínez-García, H.
PY - 2015
Y1 - 2015
N2 - In this paper we present a computational electromagnetic simulation of a multiform diffractor placed at the center of an antenna array. Our approach is to solve Maxwell's differential equations with a discrete space-time formulation, using the Finite Difference Time Domain (FDTD) method. The Perfectly Matched Layers (PML) method is used as an absorbing boundary condition, to prevent further spread of the electromagnetic wave to the outside of the calculation region. The Perfect Electric Conductor (PEC) boundary conditions are used to represent the periphery of the region and the diffractor. The system consists of an antenna array of 20 elements: a transmission antenna (TX1) which feeds a Gaussian pulse with center frequency of 7.5 GHz, and 19 reception antennas (RX1 to RX19), which serve as sensors. The diffractor is discretized for integration into the environment FDTD, and two case studies are presented according to their geometric shape: square and circular diffractor. In this work, the goal is to determine the Maxwell's equations, analyze all the zones that form the diffractor and plug them in the computational algorithm in Matlab. We show the equations for each case and obtain the electromagnetic parameters of the system: electric fields, magnetic fields, and reflected power, sensed by the RX's.
AB - In this paper we present a computational electromagnetic simulation of a multiform diffractor placed at the center of an antenna array. Our approach is to solve Maxwell's differential equations with a discrete space-time formulation, using the Finite Difference Time Domain (FDTD) method. The Perfectly Matched Layers (PML) method is used as an absorbing boundary condition, to prevent further spread of the electromagnetic wave to the outside of the calculation region. The Perfect Electric Conductor (PEC) boundary conditions are used to represent the periphery of the region and the diffractor. The system consists of an antenna array of 20 elements: a transmission antenna (TX1) which feeds a Gaussian pulse with center frequency of 7.5 GHz, and 19 reception antennas (RX1 to RX19), which serve as sensors. The diffractor is discretized for integration into the environment FDTD, and two case studies are presented according to their geometric shape: square and circular diffractor. In this work, the goal is to determine the Maxwell's equations, analyze all the zones that form the diffractor and plug them in the computational algorithm in Matlab. We show the equations for each case and obtain the electromagnetic parameters of the system: electric fields, magnetic fields, and reflected power, sensed by the RX's.
KW - Antenna array
KW - Conductor electric perfect conditions (PEC)
KW - Diffractor
KW - Finite difference time domain method (FDTD)
KW - Perfectly matched layers (PML)
UR - http://www.scopus.com/inward/record.url?scp=84940641077&partnerID=8YFLogxK
M3 - Artículo
SN - 0035-001X
VL - 61
SP - 344
EP - 350
JO - Revista Mexicana de Fisica
JF - Revista Mexicana de Fisica
IS - 5
ER -