Huynen, Isabelle
[UCL]
The ever growing demand for telecommunication applications requires to enlarge the spectrum of signals. This implies to take into account propagation effects in materials and devices, in order to estimate and minimize the transit time. The present work illustrates the application of a Transmission Line Approach (TLA) to analyze materials and design devices over a wide frequency range, in order to find novel combinations yielding new applications in the electrical engineering field. This approach considers the structure under scope as a combination of equivalent transmission lines supporting the propagation of signals. Combined with an analytical formulation, the TLA offers the advantage to preserve the physical insight of a 3D propagation mechanism into multilayered or composite materials while leading to some simple distributed equivalent circuits. In this work the TLA is used for investigating over a wide frequency range the new properties resulting from nanoscaled materials and topologies, in view of designing ultra-wideband electronic nanodevices. It yields important information about their frequency response, in terms of bandwidth and of resonant frequencies induced by material properties or by reflection of waves inside the device. Meta-materials offer a new illustration of this concept: the combination of specific periodic geometries and of adequate conductive, dielectric and/or magnetic inclusions, enables to tailor the propagation characteristics in such materials, with a number of potential applications. ...
Bibliographic reference |
Huynen, Isabelle. From wave propagation to broadband characterization of materials and devices : a transmission line approach. Prom. : |
Permanent URL |
https://hdl.handle.net/2078.1/206310 |