GOMES NETO, A.; http://lattes.cnpq.br/1403715441701958; GOMES NETO, Alfrêdo.
Résumé:
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.