Efficient numerical-asymptotic electromagnetic simulations of electrically large structures are presented based on an iterative hybridization of the method of moments (MoM) and physical optics (PO) in a higher order computational framework. The iterative MoM-PO technique employs multiple reflections between PO currents nested within an overall iterative MoM-PO multiple-reflection process. The r...

The theorem of equivalence between the Kirchhoff aperture integration (AI) and the physical-optics (PO) approach applied to the interior walls of a open-ended waveguide [1] is generalized in this letter to the case of any open-ended structure (OES).

Abstract—In this work, we use the numerical steepest descent path (numerical SDP) method in complex analysis theory to calculate the highly oscillatory physical optics (PO) integral with quadratic phase and amplitude variations on the triangular patch. The Stokes’ phenomenon will occur due to various asymptotic behaviors on different domains. The stationary phase point contributions are careful...

A novel three-dimensional hybrid Finite Element Method (FEM) and Physical Optics (PO) technique for the efficient analysis of scattering problems is presented. It makes use of FEM for the regions with small and complex features and PO for the analysis of the electrically large objects of the structure taking into account mutual interactions between the FEM domains and the objects analyzed with ...

The "extinction theorem" is used to prove that the fields of reflector antennas determined by integration of the current on the illuminated surface of the reflector are identical to the fields determined by aperture field integration with the Kottler-Franz formulas over any surface Sa that caps the reflector. As a corollary to this equivalence theorem, the fields predicted by integration of the...

This paper presented a theoretical and numerical investigation of the Compact Antenna Test Range (CATR) equipped with Super Hybrid Modulated Segmented Exponential Serrations (SHMSES). The investigation was based on diffraction theory and, more specifically, the Fresnel diffraction formulation. The CATR provides uniform illumination within the Fresnel region to test antenna. Application of serra...

Proposing a novel hybrid uniform theory of diffraction-physical optics (UTD-PO) formulation, we develop method to calculate the E-plane radiation pattern corrugated rectangular horn antennas with corrugations. We derive technique from estimation total field that reaches emitting source (a magnetic current line), thereby assuming impingement plane wave above (reciprocity is applied). To validate...

materials Marina Riquelme*, Manuel Ortuño, Andrés Márquez, , Sergi Gallego, Inmaculada Pascual, Augusto Beléndez a Science and Technologies Applied Physics Institute, Universidad de Alicante, PO Box 99, 03080 Alicante (Spain); Dept, of Physics, Systems engineering & Signal Theory, Universidad de Alicante, PO Box 99, 03080 Alicante (Spain); c Dept. of Optics, Pharmacology y Anatomy, Universidad ...

We propose a technique to compute the effect of a dielectric multilayer radome. This technique uses a gaussian beam expansion associated with an evaluation of the physical optics spectral integrals using the asymptotic steepest descent path method. Then, we compare an iterative and a global process to take into account the multiple reflections inside the radome. Finally, a numeric validation is...