Download or read book The Multiplate Antenna written by Allan C. Schell and published by . This book was released on 1966 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The multiplate technique is a method of antenna design that is intended to allow the economical construction of very large antennas. The aperture area is divided into a large number of reflectors that can be adjusted in orientation and height. These plates are positioned so that energy from a desired direction is redirected to add at the focus. In this paper an analysis of the effects caused by the interstices in a multiple plate antenna is presented. The loss due to gaps and shadowing, the variation in effective receiving cross section, and the radiation pattern are determined. The bandwidth properties of this type of antenna are analyzed, and methods for reducing the effect of frequency dispersion on the pattern are presented. A short discussion of the components of a 2500-ft multiplate antenna is included. An experimental program of measurement has determined the radiation pattern, the efficiency and the relative change of gain and antenna temperature versus beam angle of a test section of a multiplate antenna. The effect of the interstices in the reflecting surface produced grating lobes of approximately -20 dB and an additional temperature component that varied from 20K - 65K depending on the beam angle. (Author).
Download or read book Multi Antenna Synthetic Aperture Radar written by Wen-Qin Wang and published by CRC Press. This book was released on 2017-07-12 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radar (SAR) is a well-known remote sensing technique, but conventional single-antenna SAR is inherently limited by the minimum antenna area constraint. Although there are still technical issues to overcome, multi-antenna SAR offers many benefits, from improved system gain to increased degrees-of-freedom and system flexibility. Multi-Antenna Synthetic Aperture Radar explores the potential and challenges of using multi-antenna SAR in microwave remote sensing applications. These applications include high-resolution imaging, wide-swath remote sensing, ground moving target indication, and 3-D imaging. The book pays particular attention to the signal processing aspects of various multi-antenna SAR from a top-level system perspective. Explore Recent Extensions of Synthetic Aperture Radar Systems The backbone of the book is a series of innovative microwave remote sensing approaches developed by the author. Centered around multi-antenna SAR imaging, these approaches address specific challenges and potential problems in future microwave remote sensing. Chapters examine single-input multiple-output (SIMO) multi-antenna SAR, including azimuth and elevation multi-antenna SAR, and multiple-input multiple-output (MIMO) SAR. The book details the corresponding system scheme, signal models, time/phase/spatial synchronization methods, and high-precision imaging algorithms. It also investigates their potential applications. Introductory Tutorials and Novel Approaches in Multi-Antenna SAR Imaging Rigorous and self-contained, this is a unique reference for researchers and industry professionals working with microwave remote sensing, SAR imaging, and radar signal processing. In addition to novel approaches, the book also presents tutorials that serve as an introduction to multi-antenna SAR imaging for those who are new to the field.
Download or read book Analysis and Design of Multiple Element Antennas for Urban Communication written by Juan Pontes and published by KIT Scientific Publishing. This book was released on 2010 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work focuses on the analysis and design of multiple element antennas (MEA) and their interaction with the propagation channel. In particular, attention is given to urban channels and how its information throughput, i.e. capacity, can be improved. With this in mind, this work extends an existing network model of the communication system in order to reduce computation time, investigates the communicational limits of MEA systems and proposes a synthesis method for capacity maximization.
Download or read book The Theory of Reflector Antennas written by Carlyle J. Sletten and published by . This book was released on 1966 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Multi Antenna Synthetic Aperture Radar written by Wen-Qin Wang and published by CRC Press. This book was released on 2017-07-12 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radar (SAR) is a well-known remote sensing technique, but conventional single-antenna SAR is inherently limited by the minimum antenna area constraint. Although there are still technical issues to overcome, multi-antenna SAR offers many benefits, from improved system gain to increased degrees-of-freedom and system flexibility. Multi-Antenna Synthetic Aperture Radar explores the potential and challenges of using multi-antenna SAR in microwave remote sensing applications. These applications include high-resolution imaging, wide-swath remote sensing, ground moving target indication, and 3-D imaging. The book pays particular attention to the signal processing aspects of various multi-antenna SAR from a top-level system perspective. Explore Recent Extensions of Synthetic Aperture Radar Systems The backbone of the book is a series of innovative microwave remote sensing approaches developed by the author. Centered around multi-antenna SAR imaging, these approaches address specific challenges and potential problems in future microwave remote sensing. Chapters examine single-input multiple-output (SIMO) multi-antenna SAR, including azimuth and elevation multi-antenna SAR, and multiple-input multiple-output (MIMO) SAR. The book details the corresponding system scheme, signal models, time/phase/spatial synchronization methods, and high-precision imaging algorithms. It also investigates their potential applications. Introductory Tutorials and Novel Approaches in Multi-Antenna SAR Imaging Rigorous and self-contained, this is a unique reference for researchers and industry professionals working with microwave remote sensing, SAR imaging, and radar signal processing. In addition to novel approaches, the book also presents tutorials that serve as an introduction to multi-antenna SAR imaging for those who are new to the field.
Download or read book Ultra Wideband Antennas and Propagation written by Ben Allen and published by John Wiley & Sons. This book was released on 2006-11-02 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing up-to-date material for UWB antennas and propagation as used in a wide variety of applications, "Ultra-wideband Antennas and Propagation for Communications, Radar and Imaging" includes fundamental theory, practical design information and extensive discussion of UWB applications from biomedical imaging, through to radar and wireless communications. An in-depth treatment of ultra-wideband signals in practical environments is given, including interference, coexistence and diversity considerations. The text includes antennas and propagation in biological media in addition to more conventional environments. The topics covered are approached with the aim of helping practising engineers to view the subject from a different angle, and to consider items as variables that were treated as constants in narrowband and wideband systems. Features tables of propagation data, photographs of antenna systems and graphs of results (e.g. radiation patterns, propagation characteristics) Covers the fundamentals of antennas and propagation, as well as offering an in-depth treatment of antenna elements and arrays for UWB systems, and UWB propagation models Provides a description of the underlying concepts for the design of antennas and arrays for conventional as well as ultra-wideband systems Draws together UWB theory by using case-studies to show applications of antennas and propagation in communication, radar and imaging systems The book highlights the unique design issues of using ultra-wideband and will serve both as an introductory text and a reference guide for designers and students alike.
Download or read book Transmission and Reception with Multiple Antennas written by Ezio Biglieri and published by Now Publishers Inc. This book was released on 2004 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transmission and Reception with Multiple Antennas: Theoretical Foundations presents a comprehensive, yet compact, survey, emphasizing the mathematical aspects of single-user multiple-antenna theory. Wireless communication system design was until recently thought to have been limited in practice by time and bandwidth. The discovery that space, obtained by increasing the number of transmit and receive antennas, can also effectively generate degrees of freedom, and hence expand the range of choices made available to the design offers system designers important new opportunities. Transmission and Reception with Multiple Antennas: Theoretical Foundations describes the channel models deployed in such systems shows how to compute the capacities achieved, overviews "space-time" codes and describes how suboptimum architectures can be employed to simplify the receiver. It provides an excellent overview for designers, students and researchers working at the forefront of wireless communication systems.
Download or read book General Electric Review written by General Electric Company and published by . This book was released on 1920 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wireless Communications and Networking for Unmanned Aerial Vehicles written by Walid Saad and published by Cambridge University Press. This book was released on 2020-04-02 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough treatment of UAV wireless communications and networking research challenges and opportunities. Detailed, step-by-step development of carefully selected research problems that pertain to UAV network performance analysis and optimization, physical layer design, trajectory path planning, resource management, multiple access, cooperative communications, standardization, control, and security is provided. Featuring discussion of practical applications including drone delivery systems, public safety, IoT, virtual reality, and smart cities, this is an essential tool for researchers, students, and engineers interested in broadening their knowledge of the deployment and operation of communication systems that integrate or rely on unmanned aerial vehicles.
Download or read book Space Division Multiple Access for Wireless Local Area Networks written by Patrick Vandenameele and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume proposes novel transmission techniques that achieve multi-path mitigation, through orthogonal frequency-domain processing, in combination with a high bandwidth efficiency, through space division multiple access. It also pays special attention to the real-world problems encountered when integrating core detection algorithms into a complete system.
Download or read book Technical Description of the Alexanderson System for Radio Telegraph and Radio Telephone Transmission written by Elmer E. Bucher and published by . This book was released on 1920 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Applications of Active Integrated Antennas written by Mohammad S. Sharawi and published by Artech House. This book was released on 2018-05-31 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive new resource guides professionals in the latest methods used when designing active integrated antennas (AIA) for wireless communication devices for various standards. This book provides complete design procedures for the various elements of such active integrated antennas such as the matching network, the amplifier/active element as well as the antenna. This book offers insight into how active integration and co-design between the active components (amplifier, oscillator, mixer, diodes) and the antenna can provide better power transfer, higher gains, increased efficiencies, switched beam patterns and smaller design footprints. It introduces the co-design approach of active integrated antennas and its superior performance over conventional methods. Complete design examples are given of active integrated antenna systems for narrow and wideband applications as well as for multiple-input-multiple-output (MIMO) systems. Readers find the latest design methods for narrow and broadband RF matching networks. This book provides a complete listing of performance metrics for active integrated antennas. The book serves as a complete reference and design guide in the area of AIA.
Download or read book Research Review written by and published by . This book was released on 1963-12 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Channel Adaptive Technologies and Cross Layer Designs for Wireless Systems with Multiple Antennas written by Vincent K.N. Lau and published by John Wiley & Sons. This book was released on 2006-02-10 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This innovative book sets forth two promising wireless approachesthat support high-quality, high-speed data and multimediaservice-multiple antenna technologies and cross layer transmitteradaptation designs-while highlighting the relationships andinteractions between them. The latest advanced technologies ofchannel adaptation techniques for wireless communication systemswith multiple antennas are thoroughly investigated. The book is divided into three parts, first giving readers a goodfoundation in underlying theory, then exploring applications aswell as advanced topics: * Part 1 examines theoretical aspects of channel adaptation inwireless communications for point-to-point and multi-user systemswith multiple antennas * Part 2 focuses on the applications of the channel-adaptivetechnologies in practical systems such as UMTS * Part 3 delves into topics such as multi-user scheduling forwideband systems, combined queuing theory and information theory,and ad hoc routing Using a hands-on, practical approach, Channel Adaptive Technologiesand Cross Layer Designs for Wireless Systems with Multiple Antennasthoroughly covers detailed design considerations that help readersunderstand how to apply theory to real-world systems. Emphasisthroughout the book is on joint optimization across differentlayers of a communications system based on an integrated approach.Examples of popular wireless systems, such as TDMA, wideband CDMA(UMTS), and HSDPA, are used throughout as practical illustrations.Each chapter ends with a summary that reviews key points and a setof problems that lets readers test their knowledge and continue todevelop their skills as they progress to new topics. Figures andtables are also used extensively to help readers visualize complextheory and systems. Combining theory, design, and application into one integratedapproach, this is a superior reference for advanced communicationstheory courses.
Download or read book The Wireless Age written by and published by . This book was released on 1919 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
