Abstract
This work addresses the issue of volume scattering effects within the context of the physical optics (PO) approach. This decreases the modeling and computational effort to simulate scattering from complex material compositions. It is shown that there is a natural progression from the classical PO for perfect electric conductors over the PO for dielectric scatterers toward the proposed formulation. Four specializations of the general algorithm are presented to emphasize the versatility of this approach. Details regarding the implementation of the proposed examples are described. Results for each of the special cases are shown and compared to commercially available full-wave solvers of CST and FEKO.
Highlights
T HE investigation of electromagnetic scattering of complex objects is widely used in many applications
Franz’ formulas are advantageous compared to Stratton–Chu equations [60] when dealing with discontinuous current distributions on a surface, which are typically encountered in physical optics (PO) computations [58], [59]
The finite integration technique (FIT) suffers from discretization effects, which can lead to a small time shift of the peaks in the time-domain responses even for very fine meshing
Summary
T HE investigation of electromagnetic scattering of complex objects is widely used in many applications. While discretizing the entire volume is possible, it drastically increases the computational cost and renders the method unfeasible for such scattering problems For special cases, such as planarly layered media, the free-space Green’s function is replaced by Green’s function for layered media [26], [30], [31]. A different way to compute the scattered fields is asymptotic simulation methods, such as the geometrical optics (GO) or physical optics (PO) approach. These are well-suited for the simulation of realistic, large-scale scenarios [32], [33]. This work tries to address the issue of hybridization of the PO method in a rather general way With this method, it is straightforward to find new PO-based descriptions of scattering scenes, including different kinds of volume scattering. We validate our approach in a practical scenario
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
