Fast dipole approximation to analyze the scattering and radiation of arbitrary wire and slot configurations in cavities and free space
Final Report Abstract
The importance of the field-bound electromagnetic coupling path for disturbance variables is constantly increasing as development progresses towards ever higher clock rates. In order to correctly evaluate the influence of these disturbance variables on electronic devices with regard to their immunity and emission, an in-depth understanding of the interaction of the fields with conductive structures such as device housings and cables is required. With the increasing complexity and bandwidth used, the size and complexity of established numerical models is growing, which is reflected in both the reliability and the cost of the results. New calculation methods based on semi-analytical solutions allow a deeper insight into the physical interactions as well as more efficient problem handling and can make a decisive contribution to technical and scientific progress. A largely analytical description of the scattering of electromagnetic waves at electrically large apertures was therefore the subject of this project, as this allows 1. a physical interpretation of the interaction processes involved, 2. a very fast calculation of the scattered fields compared to previous methods and 3. to gain a fundamental understanding of the scattering process. In this project, a new method for describing the scattering of electromagnetic waves on straight, thin conductors and slit-shaped apertures was generalized in order to analytically describe the scattering processes also on arbitrarily shaped one-dimensional structures. Using the method of analytical regularization, the overall problem was decomposed into a part of the near and far interaction of the sources and fields in order to find analytical solutions using the characteristic properties of the parts. It has been shown that the different parts of the solution correspond to different scattering processes and thus contribute to a deeper understanding of the overall problem. The result is a novel method for describing the scattering on arbitrarily shaped one-dimensional structures, in which the interaction can be calculated semi-analytically and thus very quickly. The results could be validated using established numerical methods.
Publications
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Fast Dipole Approximation of the Scattering by Thin Wires with Arbitrary Trajectory, in 2022 Kleinheubach Conference, 2022, S. 1–4
J. Petzold
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Efficient Calculation of the Radiation of Wires with Arbitrary Trajectories in Cavities. 2023 International Conference on Electromagnetics in Advanced Applications (ICEAA), 280-280. IEEE.
Petzold, J. & Vick, R.
