Download or read book Low Cost Electronically Steered Phase Arrays for Weather Applications written by Mauricio Sanchez Barbetty and published by . This book was released on 2011 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Electronically Steered Phased Array is one of the most versatile antennas used in radars applications. Some of the advantages of electronic steering are faster scan, no moving parts and higher reliability. However, the cost of phased arrays has always been prohibitive - in the order of $1M per square meter. The cost of a phased array is largely impacted by the cost of the high frequency electronics at each element and the cost of packaging. Advances in IC integration will allow incorporating multiple elements such as low noise amplifier, power amplifier, phase shifters and up/down-conversion into one or two ICs. Even though the cost for large quantities of ICs (both Silicon and GaAs) has lowered, the high cost of IC packaging and the array backplane still make the use of phase arrays for radar applications costly. The focus of this research is on techniques that reduce the packaging and the backplane cost of large electronically steered arrays. These techniques are based on simplified signal distributions schemes, reduction of layers in the backplane and use of inexpensive materials. Two architectures designed based on these techniques, as well as a novel BGA active antenna package for dual polarized phased arrays are presented. The first architecture, called the series fed row-column architecture, focuses on the reduction of phase shifters and control signals used in the backplane of the array. The second architecture, called the parallel plate feed architecture, is based on a simplified scheme for distribution of the local oscillator signal. A prototype making use of each one of these architectures is presented. Analysis of advantages and disadvantages of each of these architectures is described. The necessity of cost reduction is a factor that can possibly impact the polarization performance of the antenna. This factor is a motivation to study and develop calibration techniques that reduce the cross-polarization of electronically steered phased arrays. Advances on Interleaving Sparse Arrays, a beam forming technique for polarization improvement/correction in phased arrays, are also presented.

Download or read book Advanced Array Systems Applications and RF Technologies written by Nicholas Fourikis and published by Elsevier. This book was released on 2000-05-16 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Array Systems, Applications and RF Technologies adopts a holistic view of arrays used in radar, electronic warfare, communications, remote sensing and radioastronomy. Radio frequency (RF) and intermediate frequency (IF) signal processing is assuming a fundamental importance, owing to its increasing ability to multiply a system's capabilities in a cost-effective manner. This book comprehensively covers the important front-end RF subsystems of active phased arrays, so offering array designers new and exciting opportunities in signal processing. Provides an up to date record of existing systems from different applications Explores array systems under development Bridges the gap between textbook coverage of idealized phased arrays and practical knowledge of working phased arrays Recognises the significance of cost to the realization of phased arrays Discusses future advances in the field that promise to deliver even more affordable arrays ['intelligent' or self-focussing/-cohering arrays]

Download or read book ICCWCS 2019 written by Jamal Zbitou and published by European Alliance for Innovation. This book was released on with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, computer science engineering and telecommunications are two important areas linked and even inseparable. This is obvious for the user who connects the modem of his computer on his mobile phone or telephone line to access, via the global data network, the information available on the servers. The both domains are evolving rapidly and the development of new architectures of systems dedicated to telecommunications and computing becomes essential. Especially, wireless transmission systems with high data rate. Two parts of these systems should be developed software and hardware. Another area that is renewable energies becomes more attractive for researchers in order to develop new conversion systems with good performances, and a good optimization of energy. For example, in wireless sensor systems, we try to develop new protocols permitting to have a good autonomy in terms of energy.

Download or read book Electronically Scanned Arrays MATLAB Modeling and Simulation written by Arik D. Brown and published by CRC Press. This book was released on 2017-12-19 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: "[Contains] more lengthy mathematical derivations than most {comparable books] ... for arrays, provides for a unique, stand-alone mathematical description that can be adopted by anyone trying to communicate the theoretical foundation for their array design...has insights from a practitioner that are unique. The MATLAB® scripts alone are worth the price." —Daniel C. Ross, Ph. D, Northrop Grumman Corporation Electronically Scanned Arrays: MATLAB® Modeling and Simulation is considered the first book to provide comprehensive modeling/simulation programs used to design and analyze Electronically Scanned Arrays (ESA), a key technology internationally in the scientific and engineering communities. Several books have been written about ESAs, but most cover only fundamental theory. Few, if any, provide the insightful, easy-to-use simulation tools found in this book. Obviously, MATLAB® is one of the greatest tools available for exploring and understanding science and engineering concepts, and we use MATLAB functions to easily and instantly calculate ESA patterns. However, to achieve a truly insightful and in-depth analysis of subarray architectures, conformal arrays, etc., it is imperative that users first develop a firm grasp of ESA fundamentals. Covers largely unexplored topics, such as reliability aspects and the application of ESAs in space This volume helps readers build that elemental understanding of how ESAs work. It also provides code to run as an aid, so that readers don’t have to start from scratch. The book expands on ESA principles and provides a modeling framework, using MATLAB to model applications of ESAs (i.e. pattern optimization, space-based applications, and reliability analysis). Presented code serves as an excellent vehicle to help readers master the analysis and simulation of ESAs. Exploring how difficult problems can be simplified with short, elegant solutions, this is an invaluable resource for students and others new to ESAs, as well as experienced practicing engineers who model ESAs at the systems level.

Download or read book Radar Networks written by Hai Deng and published by CRC Press. This book was released on 2020-06-09 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar networks are increasingly regarded as an efficient approach to enhancing radar capabilities in the face of popular anti-radar techniques and hostile operating environments. Reader-friendly and self-contained, this book provides a comprehensive overview of the latest radar networking technologies. The text addresses basic, relevant aspects of radar signal processing and statistical theories, including both civilian and military radar applications. It also discusses emerging topics that directly relate to networks, such as multiple-input–multiple-output (MIMO) radars, waveform design, and diversity via multiple transmitters. Other topics covered include target recognition and imaging using radar networks. Features Gives a comprehensive view of the latest radar network technologies Covers both civilian and military applications of radar Provides basic statistics and signal processing necessary for understanding radar networks Includes up-to-date information on MIMO radars Presents waveform design and diversity for radar networks with multiple transmitters

Download or read book Design of Digital Phase Shifters for Multipurpose Communication Systems written by Binboga Siddik Yarman and published by CRC Press. This book was released on 2022-09-01 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to cover a new emerging need in designing digital phase shifter for modern communication systems. With the advancement of new generation mobile communication systems, directed beams of antenna arrays save a substantial amount of power as well as improve the communication quality. In this regard, beam-forming circuits, such as digital phase shifters (DPS) constitute essential parts of the antenna array systems. Therefore, this book is devoted to the design of digital phase shifters for various communications systems. Nowadays, phase array systems demand compact phase shifters suitable for chip implementation with wide phase-range and broad frequency band. Each chapter of this book is organized as stand-alone in such a way that the reader requires no specific background acquired from the other chapters. For each phase shifter topology introduced in this book, the reader is furnished with explicit design equations to construct the circuit under consideration. Furthermore, design equations are programmed using MATLAB to assess the electrical performance of the phase shifters with ideal and lossy components. MATLAB design programs are given at the and of each chapter as appendices and provided as soft copy on the web page of the book. In chapters 12 and 14, MMIC layouts for the lattice and T-section based DPS are provided for the readers. It is hoped that an interested reader can immediately identifies the “optimum phase shifter topology” for the need under consideration with its estimated electric performance.

Download or read book Department of Defense Appropriations for 1971 written by U.S. . HOUSE. COMMITTEE ON APPROPRIATIONS. SUBCOMMITTEE ON DEPT. OF DEFENSE. and published by . This book was released on 1970 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of Defense Appropriations for 1971 written by United States. Congress. House. Committee on Appropriations and published by . This book was released on 1970 with total page 1318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of Defense Appropriations for written by United States. Congress. House. Committee on Appropriations and published by . This book was released on 1970 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transmit Receive Modules for Radar and Communication Systems written by Rick Sturdivant and published by Artech House. This book was released on 2015-12-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of electronically scanned phased arrays is increasing in systems such as radar, wireless networks, and satellite ground terminals. An important and necessary component for these systems is the transmit receive (T/R) module, which provides the amplification and electronic beam steering that is required for proper function. This new resource presents a comprehensive overview of all design, fabrication, integration, and implementation issues associated with T/R modules for radar and communications. This book provides engineers and researchers with practical designs and 44 examples of analysis, circuits, and components used in T/R modules. It also provides a solid explanation of the theory for how T/R modules operate and how they can be optimized. In addition, this book shows how the latest technical advances in silicon germanium (SiGe) and gallium nitride (GaN) are allowing levels of performance that were previously unachievable. The book concludes with informative chapters on testing, cost considerations, and the future of next generation T/R modules.

Download or read book Low cost Phased Array Beam Steering for Satellite Communication written by Mark Nielson and published by . This book was released on 2017 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite dishes have been around for almost forty years and have serious disadvantages in steerability. In mobile satellite communication platforms, fast steerability is needed to maintain lock with the satellite while moving. Electronically steered antennas (ESA) are a solution to the problem that mechanically steered antennas pose. This work considers some of the current techniques that are being used today to lower the cost of phased array antennas and discusses the digital implementation of subarraying. Defected ground structures are considered as a solution but their use in steering an antenna was found to be far more complicated than other methods. Liquid crystal phase shifters are being used experimentally today in applications that use frequencies in the 100’s of GHz range but they have the disadvantage of being quite slow and difficult to produce. The simplest solution to lower the cost of phased array antennas is to lower the number of phase shifters in the design. Various techniques are considered in lowering the cost but in the end a subarray approach is concluded to be the most suitable option for low cost antenna design. A subarrayed approach was used in the design and implementation of the OverHorizon ESA and was shown to be fully functional.

Download or read book Gallium Arsenide Electronics Materials and Devices A Strategic Study of Markets Technologies and Companies Worldwide 1999 2004 written by R. Szweda and published by Elsevier. This book was released on 2000-12-05 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this highly respected market study provides a detailed insight into the global developments of the GaAs industry to 2004, and the implications for both suppliers and users of GaAs technology. The report has been completely revised and updated with a new chapter added on competitive technologies. The report also supplies market analysis by component type and application sectors. For a PDF version of the report please call Tina Enright on +44 (0) 1865 843008 for price details.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Resilient Space Systems Design written by Ron Burch and published by CRC Press. This book was released on 2019-09-11 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recognized as a "Recommended" title by Choice for their November 2020 issue. Choice is a publishing unit at the Association of College & Research Libraries (ACR&L), a division of the American Library Association. Choice has been the acknowledged leader in the provision of objective, high-quality evaluations of nonfiction academic writing. Presenting a fundamental definition of resilience, the book examines the concept of resilience as it relates to space system design. The book establishes the required definitions, relates its place to existing state-of-the-art systems engineering practices, and explains the process and mathematical tools used to achieve a resilient design. It discusses a variety of potential threats and their impact upon a space system. By providing multiple, real-world examples to illustrate the application of the design methodology, the book covers the necessary techniques and tools, while guiding the reader through the entirety of the process. The book begins with space systems basics to ensure the reader is versed in the functions and components of the system prior to diving into the details of resilience. However, the text does not assume that the reader has an extensive background in the subject matter of resilience. This book is aimed at engineers and architects in the areas of aerospace, space systems, and space communications.

Download or read book Department of Defense Appropriations for 1971 written by United States. Congress. House Appropriations and published by . This book was released on 1970 with total page 1322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gallium Arsenide IC Applications Handbook written by and published by Elsevier. This book was released on 1995-09-27 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gallium Arsenide IC Applications Handbook is the first text to offer a comprehensive treatment of Gallium Arsenide (GaAs) integrated chip (IC) applications, specifically in microwave systems. The books coverage of GaAs in microwave monolithic ICs demonstrates why GaAs is being hailed as a material of the future for the various advantages it holds over silicon. This volume provides scientists, physicists, electrical engineers, and technology professionals and managers working on microwave technology with practical information on GaAs applications in radar, electronic warfare, communications, consumer electronics, automotive electronics and traffic control. Includes an executive summary in each volume and chapter Facilitates comprehension with its tutorial writing style Covers key technical issues Emphasizes practical aspects of the technology Contains minimal mathematics Provides a complete reference list

Download or read book Evaluation of the Multifunction Phased Array Radar Planning Process written by National Research Council and published by National Academies Press. This book was released on 2008-08-14 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Multifunction Phased Array Radar (MPAR) is one potentially cost-effective solution to meet the surveillance needs and of several agencies currently using decades-old radar networks. These agencies including the National Oceanic and Atmospheric Administration s (NOAA) National Weather Service (NWS), the Federal Aviation Administration (FAA), the Department of Defense (DOD) and the Department of Homeland Security (DHS) have many and varied requirements and possible applications of modern radar technology. This book analyzes what is lacking in the current system, the relevant capabilities of phased array technology, technical challenges, cost issues, and compares possible alternatives. Both specific and overarching recommendations are outlined.