Download or read book Electronically Switchable Leaky wave Antenna written by Limin Huang and published by . This book was released on 1998 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Dielectric loaded Leaky Wave Antenna written by Jorgen Aasted and published by . This book was released on 1961 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and the measured performance are described of a flat, leaky-wave antenna in which the inductive, leaky surface is backed with a slab of dielectric. The analysis is based on a transverse resonance analysis which determines the physical dimensions of the antenna for a certain specified aperture distribution. An antenna was built to compare the theoretical behavior with the measured performance. Two ways of forming the dielectric to the antenna were tested. When the dielectric was molded in place the radiation pattern agreed very well with the theoretically predicted pattern, but high losses in the casting resin gave a lower gain for the antenna than anticipated. For a machined piece of dielectric, the radiation pattern was not as close to the predicted pattern as for the molded sample, but the gain was close to the predicted value. The antenna consists of a 28-by-18-inch through filled with a dielectric material over which a sheet of parallel wires is strung. At the design frequency, 4.75 gc, the antenna radiates a pencil beam 9.4 by 8.3 degrees wide at an angle of 54 degrees measured from the normal to the inductive surface. The beam can be scanned from approximately 75 degrees down to 12 degrees from the normal to the aperture by changing the frequency from 5.25 gc to 4.20 gc. (Author).
Download or read book Transformation Wave Physics written by Mohamed Farhat and published by CRC Press. This book was released on 2016-11-18 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space–time transformations as a design tool for a new class of composite materials (metamaterials) have proved successful recently. The concept is based on the fact that metamaterials can mimic a transformed but empty space. Light rays follow trajectories according to Fermat’s principle in this transformed electromagnetic, acoustic, or elastic space instead of laboratory space. This allows one to manipulate wave behaviors with various exotic characteristics such as (but not limited to) invisibility cloaks. This book is a collection of works by leading international experts in the fields of electromagnetics, plasmonics, elastodynamics, and diffusion waves. The experimental and theoretical contributions will revolutionize ways to control the propagation of sound, light, and other waves in macroscopic and microscopic scales. The potential applications range from underwater camouflaging and electromagnetic invisibility to enhanced biosensors and protection from harmful physical waves (e.g., tsunamis and earthquakes). This is the first book that deals with transformation physics for all kinds of waves in one volume, covering the newest results from emerging topical subjects such as transformational plasmonics and thermodynamics.
Download or read book Modern Printed Circuit Antennas written by Hussain Al-Rizzo and published by BoD – Books on Demand. This book was released on 2020-10-28 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents in-depth information on a variety of the latest developments in modern printed-circuit antennas written by several prominent authors in the field. This book consists of nine chapters covering a wide range of recent research topics. The topics covered include low-profile metamaterial-based adaptive beamforming techniques, high performance meta-surface antennas, fractal antennas, reconfigurable antennas for 5G systems operating at 60 GHz, radiation pattern synthesis of planar arrays using parasitic patches fed by a small number of active elements, decoupled and de-scattered monopole MIMO antenna arrays with orthogonal radiation patterns, ultra-wide band antennas with defected ground plane and microstrip line fed for Wi-Fi/Wi-Max/DCS/5G/satellite communications, and design, fabrication, and characterization of wearable textile antennas with high body-antenna isolation.
Download or read book Electromagnetic Metamaterials written by Christophe Caloz and published by John Wiley & Sons. This book was released on 2005-11-22 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic metamaterials-from fundamental physics to advanced engineering applications This book presents an original generalized transmission line approach associated with non-resonant structures that exhibit larger bandwidths, lower loss, and higher design flexibility. It is based on the novel concept of composite right/left-handed (CRLH) transmission line metamaterials (MMs), which has led to the development of novel guided-wave, radiated-wave, and refracted-wave devices and structures. The authors introduced this powerful new concept and are therefore able to offer readers deep insight into the fundamental physics needed to fully grasp the technology. Moreover, they provide a host of practical engineering applications. The book begins with an introductory chapter that places resonant type and transmission line metamaterials in historical perspective. The next six chapters give readers a solid foundation in the fundamentals and practical applications: Fundamentals of LH MMs describes the fundamental physics and exotic properties of left-handed metamaterials TL Theory of MMs establishes the foundations of CRLH structures in three progressive steps: ideal transmission line, LC network, and real distributed structure Two-Dimensional MMs develops both a transmission matrix method and a transmission line method to address the problem of finite-size 2D metamaterials excited by arbitrary sources Guided-Wave Applications and Radiated-Wave Applications present a number of groundbreaking applications developed by the authors The Future of MMs sets forth an expert view on future challenges and prospects This engineering approach to metamaterials paves the way for a new generation of microwave and photonic devices and structures. It is recommended for electrical engineers, as well as physicists and optical engineers, with an interest in practical negative refractive index structures and materials.
Download or read book Electronically Adjustable Ferrite Phase Shifters and Their Application in Scanning Leaky wave Antennas written by G. Buchta and published by . This book was released on 1966 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Trough Leaky wave Antenna written by Carlos Alberto Jaramillo and published by . This book was released on 2009 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multifunctional Ultrawideband Antennas written by Chinmoy Saha and published by CRC Press. This book was released on 2019-03-19 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multifunctional Antennas (MFA) are comparatively a new area for antenna research and finds applications in various modern wireless radios, like Cognitive Radio (CR) in Software Defined Radio (SDR) technology and MIMO technology. This book is first attempt and an invaluable resource which deals with the design and realization of various kinds of multifunctional antennas. After clearly explaining the exclusive features of MFAs, the book presents various designs of such antennas considering versatile modern and upcoming applications. Written by three internationally known researchers, Multi-Functional Ultra Wideband Antennas: Trends, Techniques and Applications: Provides a lucid introduction on UWB systems, historical perspective and discusses various applications of such systems Discusses fundamentals of antennas and its characterization in time and frequency domains, primarily aimed for the beginners in the area Revisits the design and realization of various classical UWB antennas Discusses various techniques of designing frequency-notched UWB antennas and provide detailed comparison of the techniques Deals with the techniques of deriving multiple antenna functionalities from a single antenna Incorporates exclusive discussions on modern reconfigurable antennas and printed and dielectric resonator based MIMO antennas with clear focus on recent and upcoming technological requirements With Multi-Functional Ultra Wideband Antennas: Trends, Techniques and Applications, antenna engineers, communication system engineers, graduate students, academic/industry researchers will gain a thorough knowledge on design of such antennas with clear physical insight and understanding. Chinmoy Saha, PHD, is an associate Professor in the Department of Avionics at Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala, India. His current research interest includes Microwave Circuits, Engineered Materials, Metamaterial Inspired Antennas and Circuits, reconfigurable and multi-functional antennas for modern wireless applications, Dielectric Resonator antennas, THz antennas and wireless power transfer. He is the author or coauthor of several books, scientific journals and recipient of several prestigious awards. Jawad Yaseen Siddiqui, PHD, is an associate Professor in the Department of Radio Physics and Electronics at University of Calcutta, Kolkata, India. His current research interest includes ultra-wideband antennas, frequency reconfigurable antennas, tapered slot antennas and multi-functional antennas for cognitive radio application. He is the author or coauthor of several books, scientific journals and recipient of prestigious awards. He is a Co-Principal Investigator on Stratosphere Troposphere (ST) Radar Project at the University of Calcutta, Kolkata, India. Yahia M.M. Antar, PHD, is a Professor in the Department of Department of Electrical and Computer Engineering at the Royal Military College of Canada, Kingston, ON, Canada. He is the author or coauthor of several books, scientific journals and recipient of prestigious awards which includes IEEE-Antennas and Propagation Society prestigious Chen-To-Tai Distinguished Educator Award for 2017, 2015 IEEE Canada J. M. Ham outstanding Engineering Education Award, 2014 IEEE Canada RA Fessenden Silver Medal, 2012 Queen’s Diamond Jubilee Medal from the Governor General of Canada and many more.
Download or read book Digest written by IEEE Antennas and Propagation Society. International Symposium and published by . This book was released on 2001 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid State Plasma Leaky Wave Antenna written by Gurvikram Singh Grewal and published by . This book was released on 2003 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antenna Systems for Modern Wireless Devices written by Shiban K. Koul and published by Springer Nature. This book was released on with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Journal of Infrared and Millimeter Waves written by and published by . This book was released on 2002 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Leaky wave Antenna with a Curved Aperature written by Richard C. Honey and published by . This book was released on 1960 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Leaky Wave Antenna Configurations for Broadside Scan written by Sameer Shekhar and published by . This book was released on 2010 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Active Leaky wave Antenna written by Howard Zen Chang and published by . This book was released on 1996 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Leaky Wave Antennas written by Winsee Lo and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A LEAKY WAVE ANTENNA WITH A CURVED APERTURE written by and published by . This book was released on 1960 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
