Show simple item record Ghosh, B Simons, NRS Shafai, L Ittipiboon, A Petosa, A 2007-10-03T12:32:27Z 2007-10-03T12:32:27Z 2002-10-31T12:32:27Z
dc.identifier.citation 0018-9480; IEEE TRANS MICROWAVE THEORY, OCT 2002, vol. 50, no. 10, p.2294 to 2304. en
dc.description.abstract This paper describes the development of a rigorous transmission-line matrix-based modal-extraction approach to analyze discontinuities in guided-wave structures in general, with particular attention to the nonradiative dielectric waveguide (NRD). The motivation for this paper arose from the need to ascertain the admittance of a slot in the ground plane of an NRD without relying on experimental data. These data enabled one to design an NRD-based slot array following the methodology of Malherbe, Matherbe et al., and Ghosh et al.. Previous work in this area relied on placing observation points sufficiently remote from the discontinuity in order to ensure the decay of scattered evanescent modes to appreciably low levels. The method discussed here obviates this requirement and allows the evaluation of generalized scattering-matrix coefficients arbitrarily close to the discontinuity, thus significantly reducing the computational overhead. Results pertaining to discontinuities in the NRD and the rectangular waveguide have been presented and shown to give good agreement with those in the literature and with measurements. The perfectly matched layer has been used as an absorbing boundary condition in our simulations. Finally, the results have been verified using the power-conservation and Poynting's theorems. en
dc.format.extent 478844 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights ©2002 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Manitoba's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it. en
dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject discontinuities en
dc.subject modal extraction en
dc.subject NRD en
dc.subject PML en
dc.subject TLM en
dc.subject SLOT ARRAY en
dc.subject DESIGN en
dc.subject COMPONENTS en
dc.subject DIAKOPTICS en
dc.title TLM-based modal-extraction approach for the investigation of discontinuities in the rectangular waveguide and the NRD en
dc.status Peer reviewed en

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