Work

On a Time Domain Calderón Preconditioned CFIE Discretized with Convolution Quadratures

Year: 2023

Type: conference-paper

Abstract: Several standard integral equations in the time domain suffer from at least one of the following limitations: 1) conditioning breakdowns, 2) internal resonances, or 3) DC-instabilities. The standard time domain combined field integral equation (CFIE) being no exception, is plagued by the large time step and dense discretization breakdowns. Calderón preconditioning strategies are commonly proposed to address these issues in the frequency domain but, to this day, they were not available for convolution quadrature CFIEs. This work will fill this gap proposing a new Calderón approach leading to a well-conditioned and resonant-free convolution quadrature discretized equation.

Source: Digest - IEEE Antennas and Propagation Society. International Symposium

DOI: 10.1109/usnc-ursi52151.2023.10237690

Authors: Pierrick Cordel, Van Chien Le, Adrien Merlini, Kristof Cools, Francesco P. Andriulli

Institutions: Politecnico di Torino, Ghent University, IMT Atlantique

Language: English

Topic: Electromagnetic Scattering and Analysis

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Commission, Horizon 2020 Framework Programme, H2020 European Research Council