Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Christopher L. Wagner"'
Publikováno v:
IEEE Transactions on Antennas and Propagation. 61:3237-3243
Detailed herein is a post-processing method for modeling the fields of a roving source in an inhomogeneous environment. The method invokes the reciprocity theorem and employs the concept of calibration length and area for the antennas of the problem
Publikováno v:
Journal of Computational Acoustics. 13:365-384
The classic Yee Finite-Difference Time-Domain (FDTD) algorithm employs central differences to achieve second-order accuracy, i.e., if the spatial and temporal step sizes are reduced by a factor of n, the phase error associated with propagation throug
Autor:
Christopher L. Wagner
Publikováno v:
Journal of Computational Physics. 205:343-356
In a one-dimensional (1D) homogeneous space, the classic Yee finite-difference timedomain (FDTD) algorithm is numerically exact when operated at the Courant stability limit. Numerically exact is taken to mean that, to within the sampling limit impose
Publikováno v:
IEEE Transactions on Antennas and Propagation. 51:2885-2890
Because a resonator with perfect electrically conducting (PEC) walls has no complications with absorbing boundary conditions and, for canonical geometries, the resonant frequencies are trivial to find, resonators are often used for analyzing the perf
Publikováno v:
The Journal of the Acoustical Society of America. 104:3219-3226
The finite-difference time-domain (FDTD) method provides a simple and accurate means of simulating a wide range of acoustic wave propagation problems. Unfortunately, the method has a voracious appetite for computational resources. For example, to acc
Publikováno v:
IEEE Transactions on Antennas and Propagation. 46:1159-1168
Sources can be embedded in a finite-difference time-domain (FDTD) grid in any one of several ways. Depending on the particular implementation, the embedded source corresponds physically to a hard field source (applied field), a transparent current so
Publikováno v:
The Journal of the Acoustical Society of America. 103:136-142
The finite-difference time-domain (FDTD) method is a simple but powerful numerical method which has been used to perform a wide variety of complex simulations. One of the considerations in using this method is modeling the source of the incident fiel
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:2131-2136
Finite-difference time-domain (FDTD) grids are often described as being divergence-free in a source-free region of space. However, in the presence of a source, the continuity equation states that charges may be deposited in the grid, while Gauss's la
Publikováno v:
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.
The use of reciprocity in FDTD simulations is described herein for the case of moving sources. The method is validated against experimental data associated with extremely low frequency EM sources. The correlation between data sets associated with sim