Download or read book High power Photonic Antenna Arrays written by Matthew R. Konkol and published by . This book was released on 2018 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: As RF phased array antennas continue to evolve to meet the demands of modern wireless applications, several pressing challenges are making it difficult for electronic-based systems to adapt. New systems are desired that exhibit ultra-wideband (UWB) performance, improved size, weight, and power (SWaP) characteristics, and provide functionality extending into the mmW regime. However, inherent to the current phased array paradigm is the inclusion of bulky and interferent electronic feed circuitry which has proven prohibitive in bringing these goals to fruition. ☐ In this work, a photonic solution is proposed to enable progress in these areas. An all-dielectric, fiber optic phased array feed is presented, which demonstrates inherent electromagnetic field immunity, small size and weight, and wide operational bandwidth. These feed properties enable the preservation of the theoretical UWB response and low-profile of a variety of high-performance antennas. To provide sufficient RF output power, high-power charge-compensated modified uni-traveling carrier (CC-MUTC) photodiodes are directly integrated into the feed points of these antennas. By properly designing the “photonic antennas” to compensate for the capacitive reactance and heat dissipation of the photodiodes, they are shown to demonstrate effective isotropic radiated power (EIRP) exceeding 1 W, and RF power conversion efficiency (PCE) approaching 50% close to mmW. ☐ A number of increasingly complex, high-power photonic phased array systems are studied for modern RF applications. Aperture coupled patch antennas (ACPAs) are designed for 22 and 28 GHz operation, which demonstrate near ideal performance metrics. A 28 GHz photonic ACPA array is also fabricated for narrowband 5G applications. Later, photonic connected array antennas are investigated, which realize efficient 5-20 GHz response, while retaining the excellent SWaP qualities of elementary dipole elements. The fiber optic feed is shown to mitigate common problems that inhibit the UWB operation of traditional electronic phased array antennas, such as scan blindness and unbalanced feeding. And lastly, a photonic tightly coupled array is fabricated, which improves antenna output power and beam steering through addition of a ground plane. Simulations indicate that large-scale photonic TCAs can have similar bandwidth performance to that of their electronic counterparts, while being more flexible in their potential physical deployment scenarios and operating bands of interest.

Download or read book Tunable Wavelength Based Photonic Architectures for the Dynamic Control of Phased Array Antennas written by Henry Zmuda and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines three novel photonic systems for controlling broadband phased array antennas. These photonic systems take advantage of recent advances in fiber Bragg gratings, high dispersion optical fiber and tunable wavelength laser technologies. The first system is a transmit/receive beamformer that uses fiber gratings arranged in a prism-like configuration. A proof-of-concept breadboard for controlling a three-element phased array antenna demonstrated high-resolution beamsteering over a 3.5 GHz bandwidth. Based on this discrete architecture, two other systems are proposed; a transversal filter and an optical packet encoder/decoder for optical data communication systems. The second system utilizes high dispersion optical fiber along with fiber Bragg gratings to achieve continuous steering for both transmit or receive. The system, dubbed a photonic crossbar switch, allows the independent routing of a wavelength-encoded signal from an arbitrary input port to an arbitrary output port. The third system, a modified version of the crossbar switch, is capable of broadband null steering. Measurements taken over a ten-percent fractional bandwidth on a three-element proof-of-concept system showed a uniform null depth of better than 40 dB across the entire band. The architecture presented is best suited for small antenna array applications, for example GPS-guided airborne munitions.

Download or read book Antenna and Array Technologies for Future Wireless Ecosystems written by Yingjie Jay Guo and published by John Wiley & Sons. This book was released on 2022-07-20 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Tunable Wavelength based Photonic Architectures for the Dynamic Control of Phased Array Antennas written by Henry Zmuda and published by . This book was released on 1999 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines three novel photonic systems for controlling broadband phased array antennas. These photonic systems take advantage of recent advances in fiber Bragg gratings, high dispersion optical fiber and tunable wavelength laser technologies. The first system is a transmit/receive beamformer that uses fiber gratings arranged in a prism-like configuration. A proof-of-concept breadboard for controlling a three-element phased array antenna demonstrated high-resolution beamsteering over a 3.5 GHz bandwidth. Based on this discrete architecture, two other systems are proposed; a transversal filter and an optical packet encoder/decoder for optical data communication systems. The second system utilizes high dispersion optical fiber along with fiber Bragg gratings to achieve continuous steering for both transmit or receive. The system, dubbed a photonic crossbar switch, allows the independent routing of a wavelength-encoded signal from an arbitrary input port to an arbitrary output port. The third system, a modified version of the crossbar switch, is capable of broadband null steering. Measurements taken over a ten-percent fractional bandwidth on a three-element proof-of-concept system showed a uniform null depth of better than 40 dB across the entire band. The architecture presented is best suited for small antenna array applications, for example GPS-guided airborne munitions.

Download or read book Optical MEMS Nanophotonics and Their Applications written by Guangya Zhou and published by CRC Press. This book was released on 2017-12-14 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers device design fundamentals and system applications in optical MEMS and nanophotonics. Expert authors showcase examples of how fusion of nanoelectromechanical (NEMS) with nanophotonic elements is creating powerful new photonic devices and systems including MEMS micromirrors, MEMS tunable filters, MEMS-based adjustable lenses and apertures, NEMS-driven variable silicon nanowire waveguide couplers, and NEMS tunable photonic crystal nanocavities. The book also addresses system applications in laser scanning displays, endoscopic systems, space telescopes, optical telecommunication systems, and biomedical implantable systems. Presents efforts to scale down mechanical and photonic elements into the nano regime for enhanced performance, faster operational speed, greater bandwidth, and higher level of integration. Showcases the integration of MEMS and optical/photonic devices into real commercial products. Addresses applications in optical telecommunication, sensing, imaging, and biomedical systems. Prof. Vincent C. Lee is Associate Professor in the Department of Electrical and Computer Engineering, National University of Singapore. Prof. Guangya Zhou is Associate Professor in the Department of Mechanical Engineering at National University of Singapore.

Download or read book Active Array Antennas for High Resolution Microwave Imaging Radar written by Jiaguo Lu and published by Springer Nature. This book was released on 2023-05-04 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the application of active array antennas in high-resolution microwave imaging radar systems. It introduces the basic principles, analytical methods, and performance parameters of active array antennas to achieve low profile, high efficiency, and lightweight. The book systematically elaborates the architecture, analysis, and engineering practice to achieve wideband, multi-band, multi-polarization, and common aperture in active array antennas. It explores hotspot technologies of digital array antennas, microwave photonic array antennas, and active packaging antennas. By presenting over 300 illustrations and diagrams, including schematic diagrams, block diagrams, relation diagrams, and breakdown drawings, the book enables a thorough understanding of the antenna array microsystem as the advanced phase of active array antennas and the direction of future R&D. The book is a good reference source for researchers and engineers interested in the engineering and implementation of microwave imaging radar systems and antenna technology.

Download or read book Optical Antennas written by Mario Agio and published by Cambridge University Press. This book was released on 2013-01-03 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: This consistent and systematic review of recent advances in optical antenna theory and practice brings together leading experts in the fields of electrical engineering, nano-optics and nano-photonics, physical chemistry and nanofabrication. Fundamental concepts and functionalities relevant to optical antennas are explained, together with key principles for optical antenna modelling, design and characterisation. Recognising the tremendous potential of this technology, practical applications are also outlined. Presenting a clear translation of the concepts of radio antenna design, near-field optics and field-enhanced spectroscopy into optical antennas, this interdisciplinary book is an indispensable resource for researchers and graduate students in engineering, optics and photonics, physics and chemistry.

Download or read book Silicon Photonics for High Performance Computing and Beyond written by Mahdi Nikdast and published by CRC Press. This book was released on 2021-11-17 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon photonics is beginning to play an important role in driving innovations in communication and computation for an increasing number of applications, from health care and biomedical sensors to autonomous driving, datacenter networking, and security. In recent years, there has been a significant amount of effort in industry and academia to innovate, design, develop, analyze, optimize, and fabricate systems employing silicon photonics, shaping the future of not only Datacom and telecom technology but also high-performance computing and emerging computing paradigms, such as optical computing and artificial intelligence. Different from existing books in this area, Silicon Photonics for High-Performance Computing and Beyond presents a comprehensive overview of the current state-of-the-art technology and research achievements in applying silicon photonics for communication and computation. It focuses on various design, development, and integration challenges, reviews the latest advances spanning materials, devices, circuits, systems, and applications. Technical topics discussed in the book include: • Requirements and the latest advances in high-performance computing systems • Device- and system-level challenges and latest improvements to deploy silicon photonics in computing systems • Novel design solutions and design automation techniques for silicon photonic integrated circuits • Novel materials, devices, and photonic integrated circuits on silicon • Emerging computing technologies and applications based on silicon photonics Silicon Photonics for High-Performance Computing and Beyond presents a compilation of 19 outstanding contributions from academic and industry pioneers in the field. The selected contributions present insightful discussions and innovative approaches to understand current and future bottlenecks in high-performance computing systems and traditional computing platforms, and the promise of silicon photonics to address those challenges. It is ideal for researchers and engineers working in the photonics, electrical, and computer engineering industries as well as academic researchers and graduate students (M.S. and Ph.D.) in computer science and engineering, electronic and electrical engineering, applied physics, photonics, and optics.

Download or read book Phased array Antenna Control by a Monolithic Photonic Integrated Circuit COMPASS written by and published by . This book was released on 1991 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phased-array antenna systems are well known for rapid beam steering and their ability to bring high power to the target. Such systems are also quite complex and heavy, which have limited their usefulness. The issues of weight, size, power use, and complexity have been addressed through a system named COMPASS (Coherent Optical Monolithic Phased Array Steering System). All phased-array antenna systems need: (1) small size; (2) low power use; (3) high-speed beam steering; and (4) digitally-controlled phase shifting. COMPASS meets these basic requirements, and provides some very desirable additional features. These are: (1) phase control separate from the transmit/receive module; (2) simple expansion to large arrays; (3) fiber optic interconnect for reduced sensitivity to EMI; (4) an intrinsically radiation-hard GaAs chip; and (5) optical power provided by a commercially available continuous wave (CW) laser. 4 refs., 8 figs.

Download or read book Integrated Active Antennas and Spatial Power Combining written by Julio A. Navarro and published by Wiley-Interscience. This book was released on 1996-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only book currently available that covers this subject. The authors piece together information from diverse areas which is essential to understand integrated and integrated active antennas. Emphasis is placed on active antennas and power combining applications, consolidating the work from numerous researchers. Early chapters lay the foundation for oscillator, antenna, array and power combining theory. Chapter five discusses important testing parameters and techniques for active antenna measurements and includes definitions for equivalent isotropic radiated power, locking gain and locking bandwidth. The last chapter sheds light on beam steering, a more recent development in active antenna arrays. Contains over 200 illustrations.

Download or read book Fundamentals of Microwave Photonics written by V. J. Urick and published by John Wiley & Sons. This book was released on 2015-03-02 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource to designing and constructing analog photonic links capable of high RF performance Fundamentals of Microwave Photonics provides a comprehensive description of analog optical links from basic principles to applications. The book is organized into four parts. The first begins with a historical perspective of microwave photonics, listing the advantages of fiber optic links and delineating analog vs. digital links. The second section covers basic principles associated with microwave photonics in both the RF and optical domains. The third focuses on analog modulation formats—starting with a concept, deriving the RF performance metrics from basic physical models, and then analyzing issues specific to each format. The final part examines applications of microwave photonics, including analog receive-mode systems, high-power photodiodes applications, radio astronomy, and arbitrary waveform generation. Covers fundamental concepts including basic treatments of noise, sources of distortion and propagation effects Provides design equations in easy-to-use forms as quick reference Examines analog photonic link architectures along with their application to RF systems A thorough treatment of microwave photonics, Fundamentals of Microwave Photonics will be an essential resource in the laboratory, field, or during design meetings. The authors have more than 55 years of combined professional experience in microwave photonics and have published more than 250 associated works.

Download or read book RF Photonic Technology in Optical Fiber Links written by William S. C. Chang and published by Cambridge University Press. This book was released on 2007-05-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many applications, radio frequency (RF) signals need to be transmitted and processed without being digitalized. Optical fiber provides a transmission medium in which RF modulated optical carriers can be transmitted and distributed with very low loss, making it more efficient and less costly than conventional electronic systems. This volume presents a review of RF photonic components, transmission systems, and signal processing examples in optical fibers from leading academic, government, and industry scientists working in this field. It also introduces the reader to various related technologies such as direct modulation of laser sources, external modulation techniques, and detectors. The text is aimed at engineers and scientists engaged in the research and development of optical fibers and analog RF applications. With an emphasis on design, performance and practical application, this book will be of particular interest to those developing systems based on this technology.

Download or read book Advances in Array Optimization written by Ertugrul Aksoy and published by BoD – Books on Demand. This book was released on 2020-03-04 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to develop technology and communication necessitates the design of flexible and high-capacity radiating systems in today's communication infrastructure. In this context, antenna arrays are the ideal solution and have been one of the priority research subjects of the science community dealing with electromagnetics from past to present. Optimization of an array may be performed in various ways such as the optimization of excitation, reflector structure, feed network, etc. depending on the array structure. This book is a collection of seven research studies focused on the optimization of array structures in classical phased array or time modulation, including radiator, reflector, feed network, and radiating element optimizations.

Download or read book Modern Applications in Optics and Photonics written by Lourdes S. M. Alwis and published by MDPI. This book was released on 2021-09-02 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optics and photonics are among the key technologies of the 21st century, and offer potential for novel applications in areas such as sensing and spectroscopy, analytics, monitoring, biomedical imaging/diagnostics, and optical communication technology. The high degree of control over light fields, together with the capabilities of modern processing and integration technology, enables new optical measurement systems with enhanced functionality and sensitivity. They are attractive for a range of applications that were previously inaccessible. This Special Issue aims to provide an overview of some of the most advanced application areas in optics and photonics and indicate the broad potential for the future.

Download or read book Fundamentals of Terahertz Devices and Applications written by Dimitris Pavlidis and published by John Wiley & Sons. This book was released on 2021-07-19 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative and comprehensive guide to the devices and applications of Terahertz technology Terahertz (THz) technology relates to applications that span in frequency from a few hundred GHz to more than 1000 GHz. Fundamentals of Terahertz Devices and Applications offers a comprehensive review of the devices and applications of Terahertz technology. With contributions from a range of experts on the topic, this book contains in a single volume an inclusive review of THz devices for signal generation, detection and treatment. Fundamentals of Terahertz Devices and Applications offers an exploration and addresses key categories and aspects of Terahertz Technology such as: sources, detectors, transmission, electronic considerations and applications, optical (photonic) considerations and applications. Worked examples—based on the contributors' extensive experience— highlight the chapter material presented. The text is designed for use by novices and professionals who want a better understanding of device operation and use, and is suitable for instructional purposes This important book: Offers the most relevant up-to-date research information and insight into the future developments in the technology Addresses a wide-range of categories and aspects of Terahertz technology Includes material to support courses on Terahertz Technology and more Contains illustrative worked examples Written for researchers, students, and professional engineers, Fundamentals of Terahertz Devices and Applications offers an in-depth exploration of the topic that is designed for both novices and professionals and can be adopted for instructional purposes.

Download or read book Signal written by and published by . This book was released on 1995 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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]