Uma formulação alternativa da técnica da ressonância transversa.

Abstract

Numerical characterization of millimeter-wave structures has been an important research topic by decades. However, the recent technologic progress, especially in the monolithic circuits, has increased the necessity of accurate numerical techniques, included recent observed effects. Along with this, significant advance in the computer capabilities has allowed numerical techniques development, and some techniques have been made more efficient than classical formulation. In this sense, this these is presented. The proposed alternative formulation of the Transverse Resonance Technique (TRT), in this these, differ from the usual TRT by the considered equivalent circuit. The basis of the TRT and the considered equivalent circuit are introduced, and the theoretical formulation of the proposed TRT is presented. A computer program for IBM-PC enviroment is developed and implemented. With this program, the alternative TRT proposed in this these is applied to characterization of microstrips, coupled microstrips and conductor-backed coplanar wave guides (CBCW). The dispersive behaviour of those structures is discussed and numercial results are presented to propagating and evanescent modes. So, not only the dominant mode is considered, but also higher order modes. In the microstrip case, numerical results for complex modes in a lossless structure are presented and discussed. The addopted formulation for the complex modes can be extended to the other structures (coupled microstrip and CBCW). The numerical convergence of the proposed TRT is also analyzed. Finally, conclusions are presented and some works for the continuity of this these are suggested.