Download or read book Array Techniques for Limited Scan Application written by Robert J. Mailloux and published by . This book was released on 1972 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of techniques are described which allow the use of large array elements or sub-arrays for limited scan application. Some of these techniques are new and so are described in sufficient detail to predict their performance. Emphasis is placed mainly on the method called odd-mode-scanning; the treatment of other techniques are included to add background for evaluating this new method. (Author).
Download or read book An Overlapped Sub array for Limited Scan Application written by Robert J. Mailloux and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a new technique for producing an overlapped sub-array pattern by higher order mode coupling between nearest neighbor phased array elements. Theoretical and experimental results are compared, and practical circuits described for one plane of scan. The Appendix presents a circuit for scanning in two planes. (Author).
Download or read book Experimental Studies of a Multiple Mode Array Technique for Limited Scan Applications written by Robert J. Mailloux and published by . This book was released on 1973 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents experimental data showing the limited scan capabilities of E-plane and H-plane horns and an eight-element array of E-plane horns. A theoretical discussion of scanning in two dimensions is included in the Appendix. (Author).
Download or read book Design of a Collimating Lens for a Limited Scan Array written by Lore Zahn and published by . This book was released on 1974 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the design and testing of two types of dielectric lenses used to collimate the beam of a limited-scan array. Though intended mainly to improve the broadside radiation characteristics of the array, the experimental results show substantial improvement in the scanned array behavior attributable to the use of lenses.
Download or read book A Limited scan Antenna Comprised of a Microwave Lens and Phased array Feed written by Robert V. McGahan and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Limited-scan antennas are finding increasing use in satellite communications and airport approach radars. Earlier attempts to achieve limited scan involved the use of parabolic lenses, zoning, and movable or dual-focus feeds. In the method described here, the main beam is scanned electronically by using a circular-arc phased array. The microwave lens is designed so that its back face satisfies the scanning condition. The beam is focused by shaping the front face of the lens to meet the required focusing condition and by varying the phase propagation of the lens. Two of the lenses studied were dielectric-loaded. A waveguide lens designed to scan in one dimension yielded experimental results that were good agreement with the theoretical predictions. Representative plots, and computer-generated farfield patterns of two topographically unique cases, are given.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wireless Power Transfer Algorithms Technologies and Applications in Ad Hoc Communication Networks written by Sotiris Nikoletseas and published by Springer. This book was released on 2016-11-18 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first systematic exposition on the emerging domain of wireless power transfer in ad hoc communication networks. It selectively spans a coherent, large spectrum of fundamental aspects of wireless power transfer, such as mobility management in the network, combined wireless power and information transfer, energy flow among network devices, joint activities with wireless power transfer (routing, data gathering and solar energy harvesting), and safety provisioning through electromagnetic radiation control, as well as fundamental and novel circuits and technologies enabling the wide application of wireless powering. Comprising a total of 27 chapters, contributed by leading experts, the content is organized into six thematic sections: technologies, communication, mobility, energy flow, joint operations, and electromagnetic radiation awareness. It will be valuable for researchers, engineers, educators, and students, and it may also be used as a supplement to academic courses on algorithmic applications, wireless protocols, distributed computing, and networking.
Download or read book Electronically Scanned Arrays written by Robert J. Mailloux and published by Springer Nature. This book was released on 2022-06-01 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning arrays present the radar or communications engineer with the ultimate in antenna flexibility. They also present a multitude of new opportunities and new challenges that need to be addressed. In order to describe the needs for scanned array development, this book begins with a brief discussion of the history that led to present array antennas. This text is a compact but comprehensive treatment of the scanned array, from the underlying basis for array pattern behavior to the engineering choices leading to successful design. The book describes the scanned array in terms of radiation from apertures and wire antennas and introduces the effects resulting directly from scanning, including beam broadening, impedance mismatch and gain reduction and pattern squint and those effects of array periodicity including grating and quantization lobes and array blindness. The text also presents the engineering tools for improving pattern control and array efficiency including lattice selection, subarrray technology and pattern synthesis. Equations and figurers quantify the phenomena being described and provide the reader with the tools to tradeoff various performance features. The discussions proceed beyond the introductory material and to the state of the art in modern array design. Contents: Basic Principles and Applications of Array Antennas / Element Coupling Effects in Array Antennas / Array Pattern Synthesis / Subarray Techniques for Limited Field of View and Wide Band Applications
Download or read book Electromagnetic Scattering written by Piergiorgio Uslenghi and published by Elsevier. This book was released on 2012-12-02 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic Scattering is a collection of studies that aims to discuss methods, state of the art, applications, and future research in electromagnetic scattering. The book covers topics related to the subject, which includes low-frequency electromagnetic scattering; the uniform asymptomatic theory of electromagnetic edge diffraction; analyses of problems involving high frequency diffraction and imperfect half planes; and multiple scattering of waves by periodic and random distribution. Also covered in this book are topics such as theories of scattering from wire grid and mesh structures; the electromagnetic inverse problem; computational methods for transmission of waves; and developments in the use of complex singularities in the electromagnetic theory. Engineers and physicists who are interested in the study, developments, and applications of electromagnetic scattering will find the text informative and helpful.
Download or read book 1974 International IEEE AP S Symposium Program Digest written by IEEE Antennas and Propagation Society and published by . This book was released on 1974 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Instrumentation Papers written by and published by . This book was released on with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antenna Handbook written by Y.T. Lo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology has advanced to such a degree over the last decade that it has been almost impossible to find up-to-date coverage of antennas. Antenna Handbook, edited by two of the world's most distinguished antenna speciallists, presents the most advanced antenna theory and designs and demonstrates their application in a wide variety of technical fields. They offer a staggering amount of in-depth data and analysis on a wide range of topics, supported by formulas, curves, and results, as well as derivations.
Download or read book The Handbook of Antenna Design written by Alan W. Rudge and published by IET. This book was released on 1982 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the fundamental background theory and analytical techniques of antenna design. It deals with a very wide range of antenna types, operating from very low frequencies to millimetre waves.
Download or read book Emerging Technologies in NDT written by D. van Hemelrijck and published by CRC Press. This book was released on 2022-01-27 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at the 2nd International Conference entitled: "Emerging Technologies in NDT" which was held in Athens, Greece, May 24-26, 1999. This work covers frequently used non-destructive testing methods and introduces innovative ideas in the field. The title also focuses on visual and optical inspection, acoustic emission and ultrasonics as well as a range of other closely related topics. More than 50 papers were presented at the conferecne by invited and distinguished researchers from all over the world. This volume forms a valuable record of important contributions to the relevant literature. It contains not only the most up-to-date technology developments but provides also information regarding emerging NDT techniques/technologies and their potential applications in the field. The book covers frequently used NDT methods and introduces new and innovative ideas. Focussing on visual and optical inspection, acoustic emission, ultrasonics, nonlinear ultrasonics, infrared methods, X-ray radiography, special techniques, material characterisation, NDT of civil engineering structures, inspection of pipes and reliability and validation this volume will be a great boon to engineers, researchers, quality control managers, as well as teachers and graduate students in the field.
Download or read book Report on Research at AFCRL written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1972 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Program and Digest written by and published by . This book was released on 1973 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phased Array Antenna Handbook Third Edition written by Robert J. Mailloux and published by Artech House. This book was released on 2017-11-30 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: This completely revised third edition of an Artech House classic, Phased Array Antenna Handbook, Second Edition, offers an up-to-date and comprehensive treatment of array antennas and systems. This edition provides a wealth of new material, including expanded coverage of phased array and multiple beam antennas. New modern machine learning techniques used for analysis are included. Additional material on wideband antennas and wideband coverage in array antennas are incorporated in this book, including new methods, devices, and technologies that have developed since the second edition. A detailed treatment of antenna system noise, sections on antenna pattern synthesis, developments in subarray technology, and in-depth coverage of array architecture and components are additional new features of this book. The book explores design elements that demonstrate how to size an array system with speed and confidence. Moreover, this resource provides expanded coverage of systems aspects of arrays for radar and communications. Supported with numerous equations and illustrations, this practical book helps evaluate basic antenna parameters such as gain, sidelobe levels, and noise. Readers learn how to compute antenna system noise, design subarray geometries for given bandwidth, scan and sidelobe constraints, and choose array illumination tapers for given sidelobe levels.
