This paper presents the processing and characterization of electromagnetic radiation absorbing paints and sheets based on magnetic and dielectric materials dispersed in polymeric matrices. Two different paint formulations containing carbonyl iron and/or polyaniline, using polyurethane as matrix, were prepared. Silicone sheets were also produced with polyaniline conducting polymer as filler. Mea...

Modern military and civic applications require broadband microwave multilayer radar absorbing material (MRAM), which typically consists of multiple layers that increase the thickness platforms like aircraft, ships, vehicles, thereby adding to their weight. To address this, MRAM design methods strive optimize layer parameters reduce thickness. In this article, we emphasize importance cost functi...

This paper investigates the reduction of backscatter radar cross section (RCS) for a rectangular cavity embedded in the ground plane. The bottom of the cavity is coated by a thin, multilayered radar absorbing material (RAM) with possibly different permittivities. The objective is to minimize the backscatter RCS by the incidence of a plane wave over a single or a set of incident angles. By formu...

The reduction of backscatter radar cross section(RCS) in TE polarization for a rectangular cavity embedded in the ground plane is investigated in this paper. It is established by placing a thin, multilayered radar absorbing material(RAM) with possibly different permittivities at the bottom of the cavity. A minimization problem with respect to the backscatter RCS is formulated to determine the s...

The polymer/ferroferric oxide (Fe3O4) foam and aerogel composites generally exhibit superior radar absorptivity performance. However, these have poor mechanical thermal properties. This study manufactured a polylactic acid (PLA)/Fe3O4 bio-composite evaluated the absorptivity, thermal, properties of radar-absorbing material. were prepared using solvent casting method to mix PLA Fe3O4 at varying ...

Radar engineers and operators measure the radar return of a given target from a given angle in terms of its Radar Cross Section (RCS), from which they can detect and completely identify that target as its type, direction, and speed. The RCS of a target may have a huge value from one angle and at the same time has a very small value from another angle. So the challenge is to reduce the RCS of an...

Abstract Radar is a technology that always used by the military to detect an object because it can determine shape, size, position, distance, and speed of object. This enables national defence system have anti-radar protect equipment or other important objects. One way be applied using radar-absorbing material coat surface A good made combination dielectric materials with magnetic materials. MW...