Time-dependent sources identification for transmission lines problems

Abstract : This paper is devoted to introduce an extension to the Linear Combination of Configuration Fields (LCCF). This new numerical method was synthesized to compute the time profile of an electromagnetic source radiating a specified electromagnetic field in all or part of the computational domain, for a specified duration. There is no theoretical limit for this duration; however the computational time grows significantly as this parameter is increased. Here, we extend this idea within the framework of transmission lines network. The main advantage of the proposed method over the time reversal method is the possibility to find a source, whatever the physically acceptable field specified, even in a lossy medium. The principle of the method is first validated numerically. Then we prospect the same ideas in a realdata experiment which shows that the method is ready for real-life investigations. In that case, it is the impulse response of the line under test that is used to construct the matrix for the computation of the unknown source. Then, this source is injected into the network to check that it gives the desired signal at a point of the network.
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J. Benoit, C. Chauvière, P. Bonnet, S. Girard. Time-dependent sources identification for transmission lines problems. Advanced Electromagnetics, OJS, 2015, 4 (2), pp.9-16. ⟨10.7716/aem.v4i2.280⟩. ⟨cea-01845616⟩

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