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On the inverse scattering of star-shape LC-networks

Mathematical Physics 2008-05-08 v1 math.MP Spectral Theory

Abstract

The study of the scattering data for a star-shape network of LC-transmission lines is transformed into the scattering analysis of a Schr\"odinger operator on the same graph. The boundary conditions coming from the Kirchhoff rules ensure the existence of a unique self-adjoint extension of the mentioned Schr\"odinger operator. While the graph consists of a number of infinite branches and a number finite ones, all joining at a central node, we provide a construction of the scattering solutions. Under non-degenerate circumstances (different wave travelling times for finite branches), we show that the study of the reflection coefficient in the high-frequency regime must provide us with the number of the infinite branches as well as the the wave travelling times for finite ones.

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Cite

@article{arxiv.0805.0936,
  title  = {On the inverse scattering of star-shape LC-networks},
  author = {Filippo Visco Comandini and Mazyar Mirrahimi and Michel Sorine},
  journal= {arXiv preprint arXiv:0805.0936},
  year   = {2008}
}

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6 pages