In the spectral theory of transients one may express the temporal wavefield inside a waveguide in terms of an angular integral representation of global time-domain spectral-mode constituents. The remaining spectral integral may be evaluated asymptotically. Depending of the choice of the large parameter, the evaluation of the integrals along steepest descent paths yields Whittaker- or Weyl expansions for time-domain modes.
|Title of host publication||Proceedings of 11th international conference on Electromagnetics in Advanced Applications (ICEAA '09), 14-18 September 2009, Turin, Italy|
|Place of Publication||Piscataway, NJ|
|Publisher||Institute of Electrical and Electronics Engineers|
|Publication status||Published - 2009|