A simple FDTD model for transient excitation of antennas by transmission lines

Maloney, J.G.; Shlager, K.L.; Smith, G.S.

doi:10.1109/8.277228

Cited by 115 publications

(41 citation statements)

References 6 publications

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“…Under this choice, the code is a standard FDTD code for any cell except for the two cells where the transmitting and receiving logperiodic antennas are fed. For those two points, an auxiliary line is connected to the antenna as described in [40]. The computer used for the simulations was an IBM P575 Power 6, with 5376 cores and 168 nodes.…”

Section: Fdtd Formulationmentioning

confidence: 99%

Reverberation Chamber as a Multivariate Process: FDTD Evaluation of Correlation Matrix and Independent Positions

Gradoni

Primiani²,

Moglie³

2013

PIER

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Abstract-This paper evaluates the mode-stirring efficiency in terms of uncorrelated positions of a mechanical stirrer operating inside a reverberation chamber (RC). The actual RC is simulated and viewed as a multivariate random process: the chamber field is sampled in a lattice of spatial points distributed uniformly over a volume of arbitrary dimensions. By adopting such a grid, the stirrer efficiency is then computed through the correlation matrix, accounting for the residual correlation between stirrer positions. The second-order statistics are calculated averaging over the sampling volume. Results are presented for two stirrers that move in both synchronous and interleaved mode. A comparison with the traditional circular correlation (CC) method, for the determination of the uncorrelated positions, is done showing how CC overestimates stirrer efficiency.

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Section: Fdtd Formulationmentioning

confidence: 99%

Reverberation Chamber as a Multivariate Process: FDTD Evaluation of Correlation Matrix and Independent Positions

Gradoni

Primiani²,

Moglie³

2013

PIER

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“…The input pulse is given to the transmitting antenna through a 200 Ω parallel wire transmission line. This is modeled in FDTD by the 'one way injector model' [14]. This is also used at the receiving antenna by making the input current and voltage zero.…”

Section: Gpr Antenna Modeling Of Soil and The Fdtd Algorithmmentioning

confidence: 99%

“…Uniaxial perfectly matched layer (UPML) [11][12][13] is used as the ABC to truncate the computational domain. Moreover, the 'one way injector model' [14] is used as the feed model in both the transmitting and the receiving antennas.…”

Section: Introductionmentioning

confidence: 99%

A Complete FDTD Simulation of a Real GPR Antenna System Operating Above Lossy and Dispersive Grounds

Uduwawala¹,

Norgren²,

Fuks³

et al. 2005

PIER

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Abstract-The finite difference time domain (FDTD) method is used to analyze a practical ground penetrating radar (GPR) antenna system operating above lossy and dispersive grounds. The antenna is of the resistor-loaded bow-tie type and the analysis is made for two known soil types, namely Puerto Rico and San Antonio clay loams. The soil is modeled by a two term Debye model with a static conductivity and it is matched to the mentioned soils by using curve fitting. The FDTD scheme is implemented by the auxiliary differential equation (ADE) method together with the uniaxial perfectly matched layer (UPML) absorbing boundary conditions (ABC). In order to model a real GPR environment, ground surface roughness and soil inhomogeneities are also included. The effect of soil properties on the GPR response and antenna input impedance is presented. Thus the ability to detect buried metal and plastic pipes is investigated.

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“…Here, all of them are set to quarterwavelength monopoles and located at 514∆S, 484∆S, 451∆S, 406∆S, 325∆S, 249∆S, 173∆S, 92∆S and 16∆S away from the rear terminal plane of the locomotive respectively. In order to get accurate results, the monopole model proposed in [24] is used, in which the monopole structure as well as the feeding structure by coaxial cable are taken into account. Fig.…”

Section: Rx Antenna With Surrounding Environmentmentioning

confidence: 99%

Estimation for Small-Scale Fading Characteristics of Rf Wireless Link Under Railway Communication Environment Using Integrative Modeling Technique.

Pu¹,

Wang²,

Zhang³

2010

PIER

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Abstract-The small-scale fading behavior in common wireless communication systems can be predicted by a series of propagation models. Although these types of models are feasible and effective for the situations of transmitting/receiving (Tx/Rx) antennas in relatively open surrounding environments, they are unable to address the coupling between the antenna and environment. In order to overcome this difficulty, a full-wave numerical method is applied in terms of the advantage in considering the interaction between complicated environments and the Tx/Rx antennas, and it can take into account the effect of the interaction on signals. In this paper, an integrative modeling technique involving FDTD method, two-path propagation model and multi-path statistical distribution model is presented, which combines the deterministic and statistical methods. For achieving reliable communication especially in high-speed railway environment, high sampling rate and adequate sampling points are needed for analyzing the propagation properties of the radio frequency (RF) link. This can be easily achieved by the integrative modeling technique, and the output voltage and current of train antenna under the illumination of base-station (BS) antenna along the railway can be given in detail. Results obtained from the integrative simulation for three different multi-path statistical distribution models are presented and analyzed.

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A simple FDTD model for transient excitation of antennas by transmission lines

Cited by 115 publications

References 6 publications

Reverberation Chamber as a Multivariate Process: FDTD Evaluation of Correlation Matrix and Independent Positions

Reverberation Chamber as a Multivariate Process: FDTD Evaluation of Correlation Matrix and Independent Positions

A Complete FDTD Simulation of a Real GPR Antenna System Operating Above Lossy and Dispersive Grounds

Estimation for Small-Scale Fading Characteristics of Rf Wireless Link Under Railway Communication Environment Using Integrative Modeling Technique.

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