Calculation of the characteristic impedance of microstrips using a full-wave 2-D FDTD scheme

Abstract

The frequency dependence of the characteristic impedance of microstrip lines has been in¨estigated by many authors using 3D-FDTD formulations. In the present letter, a two-dimensional FDTD scheme is used to calculate both the propagation constant and the characteristic impedance of the fundamental quasi-TEM mode in a microstrip which, in fact, is a hybrid mode. Because of the substantial reduction of computer resources required for the calculations, this method can be used as a design tool.

Heat Transfer Study in Breast Tumor Phantom during Microwave Ablation: Modeling and Experimental Results for Three Different Antennas

“…Moreover, its hard-mathematical formulation allows for solving complex models with a high degree of accuracy. Although the FDTD method can be considered a feasible way to model the wave propagation through different mediums, it needs a lot of computational resources, especially in the design process [35,37,38]. The finite element method (FEM) is a numerical technique that can be formulated as a functional minimization.…”

Directive Microstrip Antennas for Specific Below −2.45 GHz Applications

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