Download or read book Design Modeling and Analysis of K band 18 26 GHz 5 Elements Conformal Mapped Microwave Antenna Array for Near Field Applications written by Nilesh Sudhir Karnik and published by . This book was released on 2001 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of K Band 5 Element Conformal Waveguide Microwave Antenna Array written by Suraj Ayinikatt and published by . This book was released on 2002 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Conformal Antenna Array Beamforming Characteristics Using K band Waveguide Elements written by Nithin Reddy Gudur and published by . This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project will focus on the application of advanced electromagnetic simulation software 4NEC2 for the far-field characterization of a 3-element K-band array of waveguide antenna. Previous modeling efforts have shown a significant difference between simulated and measured data. The key effort in this project will be to minimize the difference between simulated and measured data by use of the 4NEC2 software. The simulation will be carried out on both a 3-element array of open-ended waveguides. The main application of these arrays in the far-field is in satellite K-band applications, where we would require multiple beams that can be controlled in beamwidth and position. The conformal nature of the array described in this work has the ability to control the beam positions and beamwidth by adjusting the conformal nature of the array.

Download or read book Advanced Antenna Array Engineering for 6G and Beyond Wireless Communications written by Yingjie Jay Guo and published by John Wiley & Sons. This book was released on 2021-10-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Microwave and Millimeter wave Antenna Design for 5G Smartphone Applications written by Wonbin Hong and published by John Wiley & Sons. This book was released on 2023-01-05 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-depth and practical coverage of design considerations for 5G antennas In Microwave and Millimeter-wave Antenna Design for 5G Smartphone Applications, two distinguished researchers deliver a holistic, multidisciplinary approach to antenna design methodologies. The book covers approaches ranging from sub-6GHz microwave to the millimeter-wave spectrum, explaining how microwave and millimeter-wave 5G antennas coexist and function, both independently and collaboratively. The book offers coverage of key considerations for designing millimeter-wave 5G antennas within space-constrained mobile devices, as well as practical concerns, like cost, fabrication yield, and heat dissipation. Readers will also find explorations of the likely future directions of 5G antenna evolution, as well as: A thorough introduction to basic concepts in 5G FR1 Band mobile antenna design, including discussions of antenna placement, element design, and topologies Comprehensive explorations of antenna feeding mechanisms and impedance matching, including chassis considerations and effects Practical discussions of frequency tunable millimeter-wave 5G antenna-in-package Fulsome treatments of compact millimeter-wave 5G antenna solutions and millimeter-wave antenna-on-display technologies for 5G mobile devices Perfect for antenna, microwave, communications, and radio-frequency engineers, Microwave and Millimeter-wave Antenna Design for 5G Smartphone Applications will also benefit graduate students, policymakers, regulators, and researchers with an interest in communications and antennas.

Download or read book Design Simulation and Experimental Testing of Near Field Null Formation in K Band Conformal Waveguide Antenna Arrays written by Mohammed Shoab Siddiqui and published by . This book was released on 2004 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Profile Conformal Antenna Arrays on High Impedance Substrate written by Hema Singh and published by Springer. This book was released on 2015-09-28 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents electromagnetic (EM) design and analysis of dipole antenna array over high impedance substrate (HIS). HIS is a preferred substrate for low-profile antenna design, owing to its unique boundary conditions. Such substrates permit radiating elements to be printed on them without any disturbance in the radiation characteristics. Moreover HIS provides improved impedance matching, enhanced bandwidth, and increased broadside directivity owing to total reflection from the reactive surface and high input impedance. This book considers different configurations of HIS for array design on planar and non-planar high-impedance surfaces. Results are presented for cylindrical dipole, printed dipole, and folded dipole over single- and double-layered square-patch-based HIS and dogbone-based HIS. The performance of antenna arrays is analyzed in terms of performance parameters such as return loss and radiation pattern. The design presented shows acceptable return loss and mainlobe gain of radiation pattern. This book provides an insight to EM design and analysis of conformal arrays. This book serves as an introduction for beginners in the design and analysis of HIS-based antenna arrays. It includes pictorial description of both planar and non-planar array design and the detailed discussion of the performance analysis of HIS-based planar and non-planar antenna array. It will prove useful to researchers and professionals, alike.

Download or read book Study of Conformal Antenna Array Characteristics Using K Band Waveguide Elements written by Craig Edward Carpenter and published by . This book was released on 1999 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulation based Optimization Of Antenna Arrays written by Slawomir Koziel and published by World Scientific. This book was released on 2019-02-13 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses surrogate-assisted design of antenna arrays, in particular, how surrogate models, both data-driven and physics-based, can be utilized to expedite procedures such as parametric optimization, design closure, statistical analysis, or fault detection. Algorithms and design frameworks are illustrated using a large variety of examples including real-world printed-circuit antenna and antenna array structures.This unique compendium contains introductory materials concerning numerical optimization, both conventional (gradient-based and derivative-free, including metaheuristics) and surrogate-based, as well as a considerable selection of customized procedures developed specifically to handle antenna array problems. Recommendations concerning practical aspects of surrogate-assisted multi-objective antenna optimization are also given. The methods presented allow for cost-efficient handling of antenna array design problems (involving CPU-intensive EM models) in the context of design optimization and statistical analysis, which will benefit both researchers, designers and graduate students.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conformal Array Antenna Theory and Design written by Lars Josefsson and published by John Wiley & Sons. This book was released on 2006-02-10 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive treatment of conformal antenna arrays from an engineering perspective. While providing a thorough foundation in theory, the authors of this publication provide a wealth of hands-on instruction for practical analysis and design of conformal antenna arrays. Thus, you get the knowledge you need, alongside the practical know-how to design antennas that are integrated into such structures aircrafts or skyscrapers.

Download or read book Planar Antenna Arrays Using Feed Networks with Nonradiative Dielectric NRD Waveguide written by and published by Cuvillier Verlag. This book was released on 2011-11-04 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with the investigation and development of low profile, low loss antennas with emphasis on reduced cost implementations for different commu- nication and radar applications in the microwave and millimeter-wave region. All antennas investigated in this work are implemented in the K-band (18 GHz– 26.5 GHz) as for this frequency range measurement facilities and power ampli- fiers were readily available, but actually they lend themselves for applications in the mm-wave range where the low loss characteristic of the NRD-guide is even more pronounced.

Download or read book Rapport van de Commissie ter Bestudering van de Gezinsverzorging in Maatschappelijke Onaangepaste Gezinnen Februari 1956 written by and published by . This book was released on 1956 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis and Optimisation of Array Antennas for Near field Plane Wave Synthesis written by Neil Norman Jackson and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiated electromagnetic compatibility (EMC) testing requires field distributions of uniform intensity throughout a test zone. This field condition is achieved within a plane wave. The use of the reflector-fed compact range for generating plane waves is well established for antenna measurements in the microwave frequency region. Extension of this technique into the sub-microwave range poses problems and this work investigates the applicability of antenna arrays for such tests. The basic problem is to determine suitable array element excitations in order to generate an approximate plane wave in the antenna near-field. Some general numerical synthesis techniques are described and shown to be applicable to arrays of arbitrary element composition and geometry. For concept verification, a prototype array of log-periodic dipole antennas was constructed and its performance accurately predicted using a computer model. Factors affecting the plane wave quality are discussed and adequate performance for some types of antenna measurements as well as for EMC testing is illustrated. One important factor influencing the plane wave quality is the geometrical arrangement of the array elements. A novel procedure for optimising the array element locations using a genetic algorithm is presented. Practical array design issues are addressed and the development of a computer-controlled wide-band feed network is presented. As an exercise in application of the array-illuminated compact range, its use to irradiate a sphere simulating the human head is discussed. Measurements of the field distribution were used to validate a finite-difference time-domain computer model of the system.

Download or read book Fast and Efficient Algorithm for Near Field Analysis of Conformal Antenna Arrays written by Punit S. Verma and published by . This book was released on 2002 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coplanar Waveguide Circuits Components and Systems written by Rainee N. Simons and published by John Wiley & Sons. This book was released on 2004-04-07 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date coverage of the analysis and applications of coplanar waveguides to microwave circuits and antennas The unique feature of coplanar waveguides, as opposed to more conventional waveguides, is their uniplanar construction, in which all of the conductors are aligned on the same side of the substrate. This feature simplifies manufacturing and allows faster and less expensive characterization using on-wafer techniques. Coplanar Waveguide Circuits, Components, and Systems is an engineer's complete resource, collecting all of the available data on the subject. Rainee Simons thoroughly discusses propagation parameters for conventional coplanar waveguides and includes valuable details such as the derivation of the fundamental equations, physical explanations, and numerical examples. Coverage also includes: Discontinuities and circuit elements Transitions to other transmission media Directional couplers, hybrids, and magic T Microelectromechanical systems based switches and phase shifters Tunable devices using ferroelectric materials Photonic bandgap structures Printed circuit antennas

Download or read book Spaceborne Antennas for Planetary Exploration written by William A. Imbriale and published by John Wiley & Sons. This book was released on 2006-08-04 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: JPL spacecraft antennas-from the first Explorer satellite in 1958 to current R & D Spaceborne Antennas for Planetary Exploration covers the development of Jet Propulsion Laboratory (JPL) spacecraft antennas, beginning with the first Explorer satellite in 1958 through current research and development activities aimed at future missions. Readers follow the evolution of all the new designs and technological innovations that were developed to meet the growing demands of deep space exploration. The book focuses on the radio frequency design and performance of antennas, but covers environmental and mechanical considerations as well. There is additionally a thorough treatment of all the analytical and measurement techniques used in design and performance assessment. Each chapter is written by one or more leading experts in the field of antenna technology. The presentation of the history and technology of spaceborne antennas is aided by several features: * Photographs and drawings of JPL spacecraft * Illustrations to help readers visualize concepts and designs * Tables highlighting and comparing the performance of the antennas * Bibliographies at the end of each chapter leading to a variety of primary and secondary source material This book complements Large Antennas of the Deep Space Network (Wiley 2002), which surveys the ground antennas covered in support of spacecraft. Together, these two books completely cover all JPL antenna technology, in keeping with the JPL Deep Space Communications and Navigation Series mission to capture and present the many innovations in deep space telecommunications over the past decades. This book is a fascinating and informative read for all individuals working in or interested in deep space telecommunications.