The phenomenon of diffraction may be defined by any deviation of geometrical rays from rectilinear paths which cannot be interpreted as reflection and refraction. Although the ascending series solutions to some canonical structures as cylinders, spheres, conducting wedges, etc. are available, they are not directly useful in high frequency region. Those ascending series solutions suffer from ver...

This paper presents the Physical Optics field calculation in terms of only line integrations by using the Modified Edge Representation technique (MER), the alternative way of the surface integration. Not only the diffracted fields as in the conventional method of equivalent edge currents (EEC) but also the scattering geometrical optics fields are expressed in terms of the MER line integrals. Th...

ARTICLE HISTORY: Received 19 November 2015 Revised 22 December 2015 Accepted 27 December 2015 The Radar Cross Section of a target plays an important role in the detection of targets by radars . This paper presents a new method to predict the bistatic and monostatic RCS of coated electrically large objects. The bodies can be covered by lossy electric and/or magnetic Radar Absorbing Materials (RA...

This paper presents our development of novel higher order electromagnetic (EM) modeling techniques for wireless technology applications based on the method of moments (MoM), finite element method (FEM), and physical optics (PO). Modern wireless systems involve electrically large EM structures (antennas, circuits, and components) that are very complex in both geometry and material composition. T...

The knowledge of radar backscatter characteristics of high-voltage power lines is of great importance in the development of a millimeter-wave wire detection system. In this paper, a very high-frequency technique based on an iterative physical optics approach is developed for predicting polarimetric radar backscattering behavior of power lines of arbitrary strand arrangement. In the proposed sca...

In this paper, the physical optics method is used to study the problem of electromagnetic scattering from Haack series nose cone. First, a meshing scheme is introduced which approximates the curvature of the surface by piecewise linear functions in both axial and rotational directions. This results in planar quadrilateral patches and enables efficient determination of the illuminated region and...

Based on the excellent and broad prospect of vortex beams in military application, it is necessary to evaluate scattering characteristics classical Bessel beam upon a perfect electrical conductor (PEC) blunt cone model aircraft structure. First, expanded by series plane wave spectra. Then, combining physical optics (PO) method, scattered field object fitted facet elements can be calculated. The...