Advanced Antenna Techniques
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Advanced Antenna Techniques
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Author : Thomas K. Kashihara
language : en
Publisher:
Release Date : 1967
Advanced Antenna Techniques written by Thomas K. Kashihara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Antennas (Electronics) categories.
The effects of superdirective design on antenna gain and angle accuracy have been investigated. Numerical results indicate that modest improvements in directivity are possible with concurrent gain improvements. The characteristics of phase patterns have also been investigated; these patterns have constant amplitude but wide spatial bandwidth and are important for angular dispersion-compression applications. Factors affecting the maximum likelihood estimates of angular parameters have been studied. Both angle and angle-rate measurements are considered for wideband and narrowband cases. Correlation principles for both electronically and mechanically scanned patterns are reviewed and two new pattern processing concepts are described. (Author).
Advanced Antenna Systems For 5g Network Deployments
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Author : Henrik Asplund
language : en
Publisher: Academic Press
Release Date : 2020-06-24
Advanced Antenna Systems For 5g Network Deployments written by Henrik Asplund and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-24 with Computers categories.
Advanced Antenna Systems for 5G Network Deployments: Bridging the Gap between Theory and Practice provides a comprehensive understanding of the field of advanced antenna systems (AAS) and how they can be deployed in 5G networks. The book gives a thorough understanding of the basic technology components, the state-of-the-art multi-antenna solutions, what support 3GPP has standardized together with the reasoning, AAS performance in real networks, and how AAS can be used to enhance network deployments. Explains how AAS features impact network performance and how AAS can be effectively used in a 5G network, based on either NR and/or LTE Shows what AAS configurations and features to use in different network deployment scenarios, focusing on mobile broadband, but also including fixed wireless access Presents the latest developments in multi-antenna technologies, including Beamforming, MIMO and cell shaping, along with the potential of different technologies in a commercial network context Provides a deep understanding of the differences between mid-band and mm-Wave solutions
Advanced Antenna Techniques For Multihop Based Cellular Networks
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Author : Ibrahim Mahmoud Abdel Nabi
language : en
Publisher:
Release Date : 2007
Advanced Antenna Techniques For Multihop Based Cellular Networks written by Ibrahim Mahmoud Abdel Nabi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Future cellular networks need to meet the demands of applications with increasin g data rates. This objective requires some essential changes in the existing cel lular architecture. Recently, relaying has been proposed as a powerful enhanceme nt technique for future cellular networks. The resulting system archi- tecture is known under the name of Multihop Based Cellular Networks (MBCNs). Studies performed so far on MBCNs assume the use of omnidirectional antennas at relay stations. In this work, we investigate the employment of advanced antenna configurations at relay stations including directional antennas and adaptive an tenna arrays. An interference reduction factor due to the use of advanced antennas is first derived, analyzed and studied in terms of the overall system performance. Results show that antenna arrays outperform omnidirectional antennas for all the considered configurations. In general, advanced antennas r esult in significant performance enhancements for MBCNs. This is proven through analytical derivations and Monte-Carlo simulation results. The performance crite ria used are: the total downlink transmit power, the outage percentage, and the interference levels in the network. It is shown that with advanced antennas up t o 40% of transmit power reduction can be achieved. Furthermore, outage percentag e and interference levels are remarkably reduced.
Advanced Antenna Array Engineering For 6g And Beyond Wireless Communications
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Author : Yingjie Jay Guo
language : en
Publisher: John Wiley & Sons
Release Date : 2021-10-26
Advanced Antenna Array Engineering For 6g And Beyond Wireless Communications written by Yingjie Jay Guo and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-26 with Technology & Engineering categories.
Advanced Antenna Array Engineering for 6G and Beyond Wireless Communications Reviews advances in the design and deployment of antenna arrays for future generations of wireless communication systems, offering new solutions for the telecommunications industry Advanced Antenna Array Engineering for 6G and Beyond Wireless Communications addresses the challenges in designing and deploying antennas and antenna arrays which deliver 6G and beyond performance with high energy efficiency and possess the capability of being immune to interference caused by different systems mounted on the same platforms. This timely and authoritative volume presents innovative solutions for developing integrated communications networks of high-gain, individually-scannable, multi-beam antennas that are reconfigurable and conformable to all platforms, thus enabling the evolving integrated land, air and space communications networks. The text begins with an up-to-date discussion of the engineering issues facing future wireless communications systems, followed by a detailed discussion of different beamforming networks for multi-beam antennas. Subsequent chapters address problems of 4G/5G antenna collocation, discuss differentially-fed antenna arrays, explore conformal transmit arrays for airborne platforms, and present latest results on fixed frequency beam scanning leaky wave antennas as well as various analogue beam synthesizing strategies. Based primarily on the authors’ extensive work in the field, including original research never before published, this important new volume: Reviews multi-beam feed networks, array decoupling and de-scattering methods Provides a systematic study on differentially fed antenna arrays that are resistant to interference caused by future multifunctional/multi-generation systems Features previously unpublished material on conformal transmit arrays based on Huygen’s metasufaces and reconfigurable leaky wave antennas Includes novel algorithms for synthesizing and optimizing thinned massive arrays, conformal arrays, frequency invariant arrays, and other future arrays Advanced Antenna Array Engineering for 6G and Beyond Wireless Communications is an invaluable resource for antenna engineers and researchers, as well as graduate and senior undergraduate students in the field.
Advanced Antenna Techniques
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Author : Leo W. Procopio
language : en
Publisher:
Release Date : 1963
Advanced Antenna Techniques written by Leo W. Procopio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
A generalized theory of resolution for linear array antennas is presented. The theory indicates that angular resolution is determined by the width of the autocorrelation of the field pattern and not by the width of the pattern it self. Hence, a well-defined main beam is not a prerequisite for achieving angular resolution; even noiselike beams can be characterized by an autocorrelation function of narrow width. It is shown that this basic principle leads to the concept of angular dispersion and compression, a phenomenon for angular beam patterns akin to dispersion and compression of radar pulses. A new procedure for synthesizing antennas for given resolution properties is also presented. The theory is applied to antennas with time-invariant and time- varying illumination functions, and is used to reexamine classical theories of superdirectivity. Antennas which intimately link resolution properties in range and angle are also analyzed; arrays in which each radiator operates at a different frequency are shown to be an example of this class. In addition to an exposition of angular resolutions theory, preliminary concepts for achieving angular dispersion and compression, and superdirectivity are also presented.
Smart Antennas And Electromagnetic Signal Processing In Advanced Wireless Technology
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Author : Paul R.P. Hoole
language : en
Publisher: CRC Press
Release Date : 2022-09-01
Smart Antennas And Electromagnetic Signal Processing In Advanced Wireless Technology written by Paul R.P. Hoole and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-01 with Technology & Engineering categories.
The book addresses the current demand for a scientific approach to advanced wireless technology and its future developments. It gives a clear presentation of both antennas and adaptive signal processing which is what makes antennas powerful, maneuverable and necessary for advanced wireless technology. The book presents electromagnetic signal processing techniques that both control the antenna beam and track the moving station, which is required for effective, fast, dynamic beamforming. The first part of the book presents a comprehensive description and analysis of basic antenna theory, starting from short dipole antennas to array antennas. This section also includes important concepts related to antenna parameters, electromagnetic wave propagation, the Friis equation, the radar equation and wave reflection and transmission through media. The second part of the book focuses on smart antennas, commencing from a look at the traditional approach to beamforming before getting into the details of smart antennas. Complete derivation and description of the techniques for electromagnetic field signal processing techniques for adaptive beamforming are also presented. Artificial Intelligence (AI) driven beamforming is presented using computationally fast and low-memory demanding technique for AI beamforming is presented with the different excitation functions available. A novel method for fast, low memory and accurate, maneuverable single beam generation is presented, as well as other methods for beamforming with fewer elements along with a simple method for tracking the mobile antenna and station. In this section, for completeness, the use of antenna signal processing for synthetic aperture techniques for imaging is also presented, specifically the Inverse Synthetic Aperture Imaging technique. The third part of the book presents technological aspects of advanced wireless technology, including the 5G wireless system and the various devices needed to construct it. While the books’ main emphasis is theoretical understanding and design, it includes applications, and legal matters are also presented.
Antenna And Array Technologies For Future Wireless Ecosystems
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Author : Yingjie Jay Guo
language : en
Publisher: John Wiley & Sons
Release Date : 2022-07-20
Antenna And Array Technologies For Future Wireless Ecosystems written by Yingjie Jay Guo and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-20 with Technology & Engineering categories.
ANTENNA AND ARRAY TECHNOLOGIES FOR FUTURE WIRELESS ECOSYSTEMS Discover a timely and accessible resource on the latest antenna research driving new developments in the field In Antenna and Array Technologies for Future Wireless Ecosystems, distinguished academics and authors Drs. Y. Jay Guo and Richard W. Ziolkowski deliver a cutting-edge resource for researchers, academics, students, and engineers who need the latest research findings on the newest challenges facing antenna designers who will be creating the technology that drives future 6G and beyond wireless systems and networks. This timely and impactful book offers the fundamental knowledge that will facilitate new research activities in the antennas and applied electromagnetics communities, and conveys innovative and practical solutions to many wireless industry problems. Its international cohort of leading authors delivers their findings on a variety of advanced topics in antenna and array research, including metasurface antennas; electrically small directive antennas; RF, millimeter-wave and THz antennas and arrays; atom-based sensors, and arrays of quantum emitters. The book also includes resources that cover the important topics: A thorough introduction to various intelligent and low-cost beam scanning, beamforming and beam-reconfigurable array technologies to support dynamic networking of future systems An exploration of advanced techniques for analyzing large arrays, as well as an examination of advanced antenna-in-package technologies for future mm-wave systems Discussions of the latest research on electrically small and extremely large hybrid antenna arrays, and photonic beamforming networks to address spectrum scarcity in future systems Low form-factor, low energy-consumption, and wireless power transfer antennas for the Internet of Things (IoT) This book is the companion of the Wiley book by the same authors, Advanced Antenna Array Engineering for 6G and Beyond Wireless Communications. Perfect for antenna engineers in academia and industry, Antenna and Array Technologies for Future Wireless Ecosystems will also be an essential resource in the libraries of senior undergraduate and graduate students studying antenna engineering applied electromagnetics and seeking a one-stop reference for state-of-the-art global antenna and antenna array research activities.
Advanced Antenna Technology
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Author : P. J. B. Clarricoats
language : en
Publisher:
Release Date : 1981
Advanced Antenna Technology written by P. J. B. Clarricoats and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Antenna arrays categories.
Advanced Antenna Techniques
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Author : Leo W. Procopio
language : en
Publisher:
Release Date : 1965
Advanced Antenna Techniques written by Leo W. Procopio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Antennas (Electronics) categories.
Investigations were conducted to extend the work of past researches in the areas of angular dispersioncompression antennas, superdirective apertures, and multidimensional resolution theory. Some new antenna techniques based on the dispersion-compression concept were studied. These antennas, with circular or cylindrical form factors achieve omidirectional coverage, and multiple beam formation. Preliminary investigations were also conducted to determine the complex illumination functions which can produce pseudo-random antenna patterns having good autocorrelation properties. (Author).
Study Of Advanced Antenna Techniques For Rendezvous Radar
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Author : B. J. Forman
language : en
Publisher:
Release Date : 1967
Study Of Advanced Antenna Techniques For Rendezvous Radar written by B. J. Forman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Radar categories.