Radar Absorbing Materials - Mechanisms and Materials PDF Download
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Author: Kevin Gaylor
Publisher:
ISBN: 9780731696383
Category : Radar
Languages : en
Pages : 25
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Book Description
Author: Kevin Gaylor
Publisher:
ISBN: 9780731696383
Category : Radar
Languages : en
Pages : 25
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Book Description
Author: K.J. Vinoy
Publisher: Springer
ISBN:
Category : Political Science
Languages : en
Pages : 216
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Book Description
Radar absorbing materials offers an electromagnetic (EM) perspective to the evolution of radar absorbing materials (RAM). The major aspects covered are the EM analysis, design, fabrication and characterization of RAM. This is followed by an exhaustive discussion on the application areas and current trends in RAM. All the major aspects of RAM technology are covered in this book. The analytical techniques are developed from first principles.
Author: K.J. Vinoy
Publisher: Springer
ISBN: 9781461304739
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Due to its extensive applications in stealth technology, much of the research effort in radar absorbing materials (RAM) has remained classified. As is the wont with classified topics, it has resulted in much awe and unfounded speculation. The aim of this book is to demystify this topic. The book in hand is concise but complete in itself. The attention of the readers is first drawn towards the historical evolution of RAM to emphasize that the elementary principles of electromagnetics lead to the fundamental concepts of RAM. These also form the basis for further mathematical analysis and design of RAM. The performance plots for the various RAM designs, to the extent possible, are taken with respect to power reflection; this should facilitate comparison of their relative performances. In order to further induce the reader to take the first step towards RAM design, we have included the relevant computer codes in a companion diskette. This would enable the reader to try out elementary designs on his own. * .EXE files should facilitate ready execution of codes on most DOS based computing platforms. The corresponding source codes with comments are also included as * .FOR files. The reader may wish to modify some of these codes for examining RAM design algorithms further. We welcome comments from the reader on these codes.
Author: Yuping Duan
Publisher: CRC Press
ISBN: 1315341034
Category : Science
Languages : en
Pages : 382
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Book Description
With the phenomenal development of electromagnetic wave communication devices and stealth technology, electromagnetic wave absorbing materials have been attracting attention as antielectromagnetic interference slabs, stealth materials, self-concealing technology, and microwave darkrooms. This book starts with the fundamental theory of electromagnetic wave absorption in loss medium space, followed by a discussion of different microwave absorbents, such as manganese dioxide, iron-based composite powder, conductive polyaniline, barium titanate powder, and manganese nitride. Then, structural absorbing materials are explored, including multilayer materials, new discrete absorbers, microwave absorption coatings, cement-based materials, and structural pyramid materials. Many of the graphics demonstrate not only the principles of physics and experimental results but also the methodology of computing. The book will be useful for graduate students of materials science and engineering, physics, chemistry, and electrical and electronic engineering; researchers in the fields of electromagnetic functional materials and nanoscience; and engineers in the fields of electromagnetic compatibility and stealth design.
Author: Cihangir K. Yuzcelik
Publisher:
ISBN: 9781423500452
Category :
Languages : en
Pages : 83
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Book Description
Low observable platforms have extremely low radar cross section specifications that cannot be achieved by shaping alone. The application of radar absorbing material is necessary, in which case the appropriate constitutive parameters and thickness must be selected. The universal design chart gives combinations of mu, epsilon and tau that provide zero specular reflection at normal incidence. Three different backing materials were used to generate the charts: (1) perfect electric conductor, (2) free space, and (3) graphite. One can pick the required values from the charts for an ideal zero reflection dielectric/magnetic layer. The extension to other materials is straightforward. Numerical simulations of coated plates were performed to estimate the effectiveness of the absorbing layers in reducing radar cross section. The reduction in monostatic radar cross section value is shown by plotting the radar cross section of the plate with and without radar absorbing material.
Author: David Roselius
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Book Description
This paper reviews the literature on radar (microwave) absorbing materials. Introductory sections include a history of research & development of such materials since the late 1930s and an overview of the theory behind the interaction of electromagnetic radiation with matter, with consideration of several aspects of reflectivity minimization. Section 4 reviews the types of radar absorbing material, including graded interfaces, resonant materials such as the Salisbury screen, circuit analogue absorbers, and magnetic absorbers. Section 5 presents a simple procedure for calculating the reflectivity from a multi-layer material and section 6 contains background on transmission line theory, which has been used to model & optimize absorbers. Finally, the report reviews the properties of absorbing materials such as carbon, conducting polymers, and composites.
Author: Willie J. Padilla
Publisher: Morgan & Claypool Publishers
ISBN: 1636392601
Category : Science
Languages : en
Pages : 199
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Book Description
Electromagnetic metamaterials are a family of shaped periodic materials which achieve extraordinary scattering properties that are difficult or impossible to achieve with naturally occurring materials. This book focuses on one such feature of electromagnetic metamaterials—the theory, properties, and applications of the absorption of electromagnetic radiation. We have written this book for undergraduate and graduate students, researchers, and practitioners, covering the background and tools necessary to engage in the research and practice of metamaterial electromagnetic wave absorbers in various fundamental and applied settings. Given the growing impact of climate change, the call for innovations that can circumvent the use of conventional energy sources will be increasingly important. As we highlight in Chapter 6, the absorption of radiation with electromagnetic metamaterials has been used for energy harvesting and energy generation, and will help to reduce reliance on fossil fuels. Other applications ranging from biochemical sensing to imaging are also covered. We hope this book equips interested readers with the tools necessary to successfully engage in applied metamaterials research for clean, sustainable energy. This book consists of six chapters. Chapter 1 provides an introduction and a brief history of electromagnetic wave absorbers; Chapter 2 focuses on several theories of perfect absorbers; Chapter 3 discusses the scattering properties achievable with metamaterial absorbers; Chapter 4 provides significant detail on the fabricational processes; Chapter 5 discusses examples of dynamical absorbers; and Chapter 6 highlights applications of metamaterial absorbers.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 314
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Book Description
The fabrication of microwave absorbing materials requires the ability to make materials with well-controlled properties such as shape, thickness, permittivity and permeability. The ability to measure the permittivity and permeability is an essential requirement for designing an optimised absorber. And good optimisations codes are required in order to achieve the best possible absorber designs. In this report, the results from a Technology Investment Funded project on the fabrication of organic radar absorbing materials are presented. The absorbing phase used was based in conducting polymers, which were synthesised and characterised for control and correlation of absorptive properties. The materials made were characterised through measurement of their conductivity and permittivity at microwave frequencies. Methods were then developed for optimising the design of microwave absorbers. A porotion of the TIF also focussed on the development of radar cross section modelling software with the capability of determining the radar cross section of a platform with absorbing patches applied.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 380
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
