Efficient Complex Root Tracing Algorithm for Propagation and Radiation Problems

An efficient complex root tracing algorithm for propagation and radiation problems is presented. The proposed approach is based on a discretization of Cauchy’s Argument Principle and its generalization to the <inline-formula> <tex-math notation="LaTeX">$\mathbb {C}\times \mathbb {R}$ </tex-math></inline-formula> space. Moreover, an engagement of the tracing process with a global root finding algorithm recently presented in the literature is performed. In order to confirm a validity and efficiency of the proposed technique, a few different types of structures have been analyzed.

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