Effects of reinforced concrete structures on RF communications

Dalke, Roger A.; Holloway, Christopher L.; McKenna, P.; Johansson, Martin; Ali, Ashar

doi:10.1109/15.902318

Cited by 109 publications

(45 citation statements)

References 11 publications

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“…Simulations are not reliable because the determination of the whole wall is essential. As similar characteristics were reported for reinforced concrete walls (Dalke et al, 2000;Antonini et al, 2003), this problem spans the vast majority of wall structures. The appearances of unpredictable signal nulls in the frequency spectrum make the use of narrowband single-view systems inadequate.…”

Section: Discussionmentioning

confidence: 52%

Near-field radiation pattern distortion of antenna attached to wall in through-the-wall radar imaging

2013

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Section: Discussionmentioning

confidence: 52%

Near-field radiation pattern distortion of antenna attached to wall in through-the-wall radar imaging

2013

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“…On the other hand, there are also a large number of high frequency radiation source around the building. With the rapid development of mobile communication, a large number of mobile communication base stations have been installed to ensure the coverage and quality of the whole network [10,11]. In downtown, the distance between base stations is usually 200 to 300 meters [4].…”

Section: Introductionmentioning

confidence: 99%

Shielding effectiveness research of concrete wall based on shielding room method

Liang¹,

Wu²,

Zhu³

et al. 2016

Proceedings of the 2016 5th International Conference on Energy and Environmental Protection (ICEEP 2016)

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With the rise of urbanization and the awareness of electromagnetic protection improves rapidly, more and more people pay attention to electromagnetic shielding effect of building. In this paper, a shielding room method is used to establish the model. The influence of wall thickness, dielectric constant, conductivity, radius of steel bar and steel bar density on shielding efficiency is studied. The result shows that with the increase of the wall thickness and electric conductivity, the shielding effect becomes better. And shielding efficiency has positive relationship with the radius and space of reinforcement bars.

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“…The finite element method (FEM) for frequency-domain analysis and the finite difference time domain (FDTD) method for time-domain analysis are often used for electromagnetic field simulation (17)- (20) . FEM is an indirect method for solving Maxwell equations that employs weighted residuals.…”

Section: Gpgpu-fdtd Simulationmentioning

confidence: 99%

Development of Design Methodology for 60Hz Wireless Power Transmission System

2016

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We previously reported a 60 Hz wireless power transmission (WPT) system, which is a system that uses the common utility frequency. In the study reported in paper, we solved several issues in order to install this system in a small electric vehicle. First, an accelerated finite difference time domain (FDTD) method using a graphics processing unit was developed to solve the issue of computation time. Next, theoretical equations for the transmission efficiency (η) and power (P out ) that include the stray load loss were derived from an equivalent circuit analysis. A new device was designed based on these theoretical equations, where by η = 70% and P out = 451 W were achieved for a transmission distance of 150 mm. Finally, we attempted to wirelessly charge of a lead storage battery. The overall efficiency of the wireless charging system was maintained at 60% during battery charging.

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Effects of reinforced concrete structures on RF communications

Cited by 109 publications

References 11 publications

Near-field radiation pattern distortion of antenna attached to wall in through-the-wall radar imaging

Near-field radiation pattern distortion of antenna attached to wall in through-the-wall radar imaging

Shielding effectiveness research of concrete wall based on shielding room method

Development of Design Methodology for 60Hz Wireless Power Transmission System

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