English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The resonant frequencies of a structure and the associated fielddistributions are generally determined by solving a non-linear eigenvalueproblem. Using frequency-domain solvers, the response of the structure needs tobe evaluated at many different frequencies in order to solve the non-linearproblem. Moreover, these frequencies may be complex, the inverse of theimaginary part physically corresponding to the e-folding time of the energy ofthe mode. In this paper, we propose to use the so-called "Geometrical Method ofMoments" (GMoM) to accelerate the computation of the resonant frequencies of astructure using the Method of Moments. First, purely geometrical reactionintegrals are precomputed, which do not depend on the frequency nor materialparameters. Then, by summing these terms with proper weights, the impedancematrix can be obtained for any complex frequency. This method easilyaccommodates for dispersive materials provided that the permittivity andpermeability of the material can be extrapolated to complex frequencies.

Geometrical MoM formulation for eigenmode analysis