Rectangular Dielectric Resonator Antennas Fed By Dielectric Image Guide

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Rectangular Dielectric Resonator Antennas Fed By Dielectric Image Guide

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Author : Asem S. Al-Zoubi
language : en
Publisher:
Release Date : 2008

Rectangular Dielectric Resonator Antennas Fed By Dielectric Image Guide written by Asem S. Al-Zoubi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

Abstract: A linear array of rectangular dielectric resonator antenna (DRA) is studied. The array is excited by a dielectric image guide. The advantages of using the dielectric image guide (DIG) are the low losses at high frequencies, and wideband performance. Two different methods of coupling between the dielectric resonator elements and the image guide are investigated. The first method of coupling is to couple the image guide to narrow apertures (slots) that are in turn exciting the dielectric resonator elements. Two problems are found in this design. First, this design causes high return losses around the slot resonances. This problem is resolved by adding a reflection cancelling slot near each main slot. The second problem is the high back radiation. This problem is resolved also by using a conducting reflector on the DIG feeding side of the antenna. The second method of excitation is the proximity coupling method between the dielectric resonator antennas and the DIG. Coupling analysis and design of single element and two different arrays are performed. It is found that this design achieve low back radiation, but high cross polarization. The cross polarization is reduced by suppressing some high order modes that are excited in the DRA elements. This suppression of these modes is performed by wrapping the middle of each DRA by a conducting strip. The coupling between the DRA and the DIG is controlled by the separation distance between them. A Dolph-Chebyshev amplitude distribution is used to control the sidelobe level of the far field radiation patterns. A prototype was build for each design from a 7-element array. The measured and computed results are in good agreement. Two 15-elemet arrays are studied numerically and show that to improve the antenna efficiency, and a reasonable number of elements must be used to couple most of the input power to the radiating elements.

Dielectric Resonator Antennas

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Author : Biswajeet Mukherjee
language : en
Publisher: Artech House
Release Date : 2021-11-30

Dielectric Resonator Antennas written by Biswajeet Mukherjee and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-30 with Technology & Engineering categories.

This book focuses on the understanding of the Cylindrical Dielectric Resonator Antennas (CDRA). The book introduces the fundamentals of DRA, CDRA, identifying the modes in a CDRA, excitation techniques and recent advancements pertaining to the research of the CDRAs. The latest trends in the field are discussed, including wide bandwidth of operation, high gain, modal stability, mode and impedance matching techniques, Circularly Polarized CDRAs, beam forming and MIMO applications for modern wireless systems. The experimental validation, testing, fabrication methods and machining to achieve cylindrical and its reformed shapes are also presented.

Circularly Polarized Dielectric Resonator Antennas

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Author : Raghvendra Kumar Chaudhary
language : en
Publisher: Artech House
Release Date : 2021-08-31

Circularly Polarized Dielectric Resonator Antennas written by Raghvendra Kumar Chaudhary and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-31 with Technology & Engineering categories.

This book introduces 5 key feeding techniques such as coaxial probe, microstrip, conformal strip, aperture, and coplanar waveguide and covers different shapes of dielectric resonator antennas leading to improvement in circularly polarized (CP) performance. It introduces advancements in the field of dielectric resonator antennas and dilectric resonator antennas (DRAs). Five different types of feeding techniques (i.e. coaxial probe, microstrip, conformal strip, aperture, and coplanar waveguide) are described for obtaining CP followed by two modified shaped DRA (sector DRAs). Throughout this book, rectangular and circular with their modified shapes of the dielectric resonator are utilized, providing differing degrees of freedom as well as different variable parameters, including length, width, height, radius, aspect ratio and dielectric constant, which are tuned to obtain the desired antenna parameters.

Innovation In Mimo Technologies Systems And Antennas

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Author : Albert Sabban
language : en
Publisher: BoD – Books on Demand
Release Date : 2025-05-14

Innovation In Mimo Technologies Systems And Antennas written by Albert Sabban and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-05-14 with Technology & Engineering categories.

This book presents innovation in MIMO communication wireless networks and antennas. The book comprehensively reviews massive MIMO systems, key technologies, challenges, and future directions. The book presents green RF technologies and systems for MIMO antenna systems. Moreover, the book presents innovation in massive MIMO cellular networks and antennas. The family of LML detectors and the family of LAS detectors for massive MIMO communications are presented in the book. Active shielding methods for space radiation protection are also presented in the book. This book evaluates massive MIMO performance with Rayleigh, Rician, and Nakagami fading channels and compares half-duplex and full-duplex modes using the HMR protocol. MIMO antenna arrays and sparse polarimetric arrays for MIMO systems are discussed in the book. In MIMO antenna networks, multiple antennas are used to transmit and receive elements. The antenna's electromagnetic signals are combined at each port of the RF communication system to improve the communication system specifications and improve the system's electrical performance by enabling data to be processed in real-time over many signal RF channels. MIMO systems provide better signal strength even without a clear line of sight as they utilize the bounced and reflected RF transmissions. MIMO systems provide better quality and quantity of video information sent over the network. Multiple data links minimize the number of lost data packets, which results in better video and audio quality. The book may be a valuable resource for MIMO antenna designers, academy researchers, communication engineers, and communication systems project managers involved in developing and manufacturing MIMO arrays and communication systems. The information presented aims to inspire further innovation and application in this field.

9th International Conference On Robotic Vision Signal Processing And Power Applications

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Author : Haidi Ibrahim
language : en
Publisher: Springer
Release Date : 2016-09-29

9th International Conference On Robotic Vision Signal Processing And Power Applications written by Haidi Ibrahim and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-29 with Technology & Engineering categories.

The proceeding is a collection of research papers presented, at the 9th International Conference on Robotics, Vision, Signal Processing & Power Applications (ROVISP 2016), by researchers, scientists, engineers, academicians as well as industrial professionals from all around the globe to present their research results and development activities for oral or poster presentations. The topics of interest are as follows but are not limited to: • Robotics, Control, Mechatronics and Automation • Vision, Image, and Signal Processing • Artificial Intelligence and Computer Applications • Electronic Design and Applications • Telecommunication Systems and Applications • Power System and Industrial Applications • Engineering Education

Substrate Integrated Waveguides

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Author : Soumava Mukherjee
language : en
Publisher: Artech House
Release Date : 2024-11-30

Substrate Integrated Waveguides written by Soumava Mukherjee and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-11-30 with Technology & Engineering categories.

Substrate Integrated Waveguide (SIW) has evolved over the last decade as a promising technology to realize low-cost and convenient microwave and mm-wave systems with interesting performance characteristics. With the design of SIW-based systems there is a requirement to look for certain aspects in terms of performance, feasibility and readiness for commercial use cases. Substrate Integrated Waveguides thoroughly outlines the working principle, design rules and fabrication procedures of SIW, and several novel design concepts for implementing antennas and passive and active circuits using SIW technology. It focuses on using substrate-­integrated waveguides for designing antennas, antenna arrays, filters and other parts of a modern transceiver. Substrate Integrated Waveguide is an important technology for 5G applications and beyond. Readers will gain a deep understanding of how to leverage SIW for developing advanced microwave and millimeter-wave systems. The book's coverage extends from basic communication principles to the intricate design of SIW-based circuits and systems, ensuring that the reader is equipped with the necessary knowledge to innovate in this rapidly evolving field. Targeted at RF engineers, academic researchers, and post-graduate students, this book stands out by offering a holistic perspective on SIW technology. It goes beyond just the basics, integrating both theoretical foundations and practical design approaches. This book serves as an essential resource for those seeking to master SIW technology. Whether for academic study or practical application, it provides the tools and insights necessary to contribute to the next generation of communication systems, particularly in terms of 5G and future technologies.

Dielectric Resonator Antenna Handbook

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Author : Aldo Petosa
language : en
Publisher: Artech House Publishers
Release Date : 2007

Dielectric Resonator Antenna Handbook written by Aldo Petosa and has been published by Artech House Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Technology & Engineering categories.

Today, more and more antenna engineers are viewing the Dielectric Resonator Antenna (DRA) as a preferable alternative to conventional low-gain designs because of several attractive features, including high radiation, light weight, small size and low profile. This practical resource presents complete, up-to-date details on DRAs in a single volume. The book provides professionals with clear guidance on the mode of operation and radiation behavior of DRAs, the main methods of excitation, and the major advances in DRA technology. This hands-on reference equips engineers with simple equations and graphs that help them rapidly design DRAs, without the need for complex analytical or numerical calculations. Numerous design examples are included to give practitioners a sense of the versatility that DRAs afford.

Rectangular Dielectric Resonator Antennas

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Author : Rajveer S. Yaduvanshi
language : en
Publisher: Springer
Release Date : 2015-09-24

Rectangular Dielectric Resonator Antennas written by Rajveer S. Yaduvanshi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-24 with Technology & Engineering categories.

This book covers resonating modes inside device and gives insights into antenna design, impedance and radiation patterns. It discusses how higher-order modes generation and control impact bandwidth and antenna gain. The text covers new approaches in antenna design by investigation hybrid modes, H_Z and E_Z fields available simultaneously, and analysis and modelling on modes with practical applications in antenna design. The book will be prove useful to students, researchers and professionals alike.

Millimeter Wave Optical Dielectric Integrated Guides And Circuits

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Author : Shiban K. Koul
language : en
Publisher: Wiley-Interscience
Release Date : 1997-04-04

Millimeter Wave Optical Dielectric Integrated Guides And Circuits written by Shiban K. Koul and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-04-04 with Technology & Engineering categories.

This much-needed reference equips electrical engineers, designers, and researchers in the microwave industry with comprehensive, up-to-date information on the theoretical principles and practical applications of dielectric integrated guides and circuits.

Multifunctional Ultrawideband Antennas

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Author : Chinmoy Saha
language : en
Publisher: CRC Press
Release Date : 2019-03-19

Multifunctional Ultrawideband Antennas written by Chinmoy Saha and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-19 with Science categories.

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.