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In this paper, the possibility of extending the validity range of the transmission line theory in evaluating differential mode signals along two-wire lines above a ground plane is discussed through analysis and simulation. It is shown that, when the above-ground height of the two wires is larger than about twice their separating distance, the calculation of the characteristic impedance of the line...
In the domain of aeronautics, the future more electric aircraft will have to face a difficult issue related to the increasing number of wires and connectors, impacting on the weight and system reliability. A possible solution for solving at least part of this problem is to introduce power-line communication for specific applications. In this paper, the cabin lighting and communication system has been...
The work presented in this paper deals with the possibility of implementing a power line communication in aircraft. A tree-shaped architecture of a network has been simulated for determining the distribution of the transfer function between different points on the line. Comparison with results obtained on a real network has been performed. The performances of an OFDM link have been determined by introducing...
In an anechoic chamber and in a reverberation chamber Radio Frequency (RF) fields are generated to illuminate a fuselage model. The fields coupled into the fuselage model are assessed. This is done by measurement and numerical computer modelling. For the numerical computer modelling fundamentally different approaches are applied with entirely independent model generation. The experimental and numerical...
The possibility of using power line communication to transmit information in a large aircraft is studied. The communication link, which has been identified and chosen in the frame of the TAUPE European project, is the cabin lighting system since its tree shape and large structure allows covering most of the other possible applications. A statistical theoretical analysis, based on the multiconductor...
This paper describes the procedure put to the fore in the EC's FP7 HIRF-SE project for carrying out HIRF simulations at aircraft level. The solution proposed is based on the use of MTLN models cable links under test and a 3D full wave solver including thin wire models in order to take into account coupling with the whole structure and the rest of the wiring. Further simplifications based on the cable...
This paper proposes an original numerical strategy in order to assess high frequency coupling in large systems, typically for HIRF applications, in a frequency range in which classical full waves numerical schemes such as FDTD or MoM become tedious and sometimes inappropriate to use. This strategy is based on a logical topological decomposition of the electromagnetic (EM) problem as sub elementary...
This paper deals with the numerical assessment of propagation channel characteristics for future application of power line communications technology in aircrafts. First of all, since exhaustive experimentation on in-board architecture are not possible, it is shown how numerical simulations on a given architecture possibly concerned by PLC implementation can help to the design of a test bench. Finally,...
Possible applications of PLC in aircraft are investigated. The scenario which has been selected is a data transmission for the remote control of the lighting system of the cabin. Indeed, the tree-shaped architecture of the cabling is complicated enough to be representative of many other harness aircraft configurations. Narrow band and wide band channel characteristics are deduced from a theoretical...
In this paper, we propose a complementary approach to full wave 3D numerical methods in order to evaluate external EM constraints on systems which can be assimilated to an assembly of cylinders. Here, we model the system under test as transmission line networks. The parameters of these transmission lines are adjusted in order to take into account the effect of cylinder thickness. Several examples...
This paper describes a simplification technique in order to model a complex cable bundle made of a large amount of wires. The basic principle consists in the description of the topology of the cable bundle in terms of point-to-point cable links and to model those cable-links as equivalent wires in a multiconductor transmission line network model. The different steps required to build the model are...
This paper proposes a theoretical model of high frequency coupling on cables running in an electrically large enclosure. This model is basically derived from the transmission line theory in which a statistical representation of the incident electromagnetic environment is added. Numerical examples put to the fore the contribution of each electrical and geometrical characteristic on the cable response...
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