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Author : Mathieu Caillet
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (142 download)
Download or read book Miniaturized Wideband Circularly Polarized Hybrid Dielectric Resonator Antenna written by Mathieu Caillet and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raghvendra Kumar Chaudhary
Publisher : Artech House
ISBN 13 : 1630818186
Total Pages : 310 pages
Book Rating : 4.6/5 (38 download)
Download or read book Circularly Polarized Dielectric Resonator Antennas written by Raghvendra Kumar Chaudhary and published by Artech House. This book was released on 2021-08-31 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Rajveer S. Yaduvanshi
Publisher : CRC Press
ISBN 13 : 1000067270
Total Pages : 366 pages
Book Rating : 4.0/5 ( download)
Download or read book Nano Dielectric Resonator Antennas for 5G Applications written by Rajveer S. Yaduvanshi and published by CRC Press. This book was released on 2020-05-26 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are always surrounded by electromagnetic waves and fields of various spectra. This book explains basic electromagnetic theory with the help of design formulations i.e. mathematical background on antennas along with experimentations, which has made this book unique. The main purpose of this book is to embed mathematical EM theory of dielectric resonator antennas with experimental validation so that understanding of concepts takes place. Initially, basic understanding of philosophy of dielectric resonators has been discussed, then it is supported with mathematical modeling and later same is implemented with its prototype model along with experimentations. The modes theory gives important analysis on currents distribution, impedance analysis and radiation pattern in DRA. Circular polarization can built signal robustness, case studies on circular polarization has been included. Equivalent RLC circuit concept has been introduced. Challenges of switching from microwave to terahertz has been briefly discussed. Nano DRA will revolutionize the wireless technology. Nano DRA ,Terahertz DRA and Quantum DRA have analyzed and studied.
Author : Kwai Man Luk
Publisher : Research Studies Press Limited
ISBN 13 : 9780863802638
Total Pages : 0 pages
Book Rating : 4.8/5 (26 download)
Download or read book Dielectric Resonator Antennas written by Kwai Man Luk and published by Research Studies Press Limited. This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of dielectric resonator as a resonant antenna was proposed in 1983. Due to the absence of metallic loss, the dielectric resonator antenna (DRA) is highly efficient when operated at millimetre wave frequencies. With the use of high dielectric constant material, the DRA can also be used as a small and low profile antenna operated at low microwave frequencies. Low cost dielectric materials are now easily available commercially, encouraging more antenna engineers to design communication systems with DRAs.
Author : Ali Khalajmehrabadi
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (96 download)
Download or read book Design and Analysis of Wideband Circularly Polarized Dielectric Resonator Antenna for Wireless Communication Applications written by Ali Khalajmehrabadi and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joshua Matthew Patin
Publisher :
ISBN 13 :
Total Pages : 97 pages
Book Rating : 4.:/5 (727 download)
Download or read book Design and Analysis of a Compact Dielectric Resonator Circularly Polarized Antenna and Four Resonator Bandpass Filter at Ku-band for Satellite Communications Applications written by Joshua Matthew Patin and published by . This book was released on 2011 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: All communications systems require band-limiting filters and antennas for proper operation. In space communications, strict requirements on size, weight, and power necessitate the use of low power, low loss components which are physically small and lightweight. Often times, higher frequencies are also desired in order to sustain higher data transfer rates. Circular polarization is a common need for space communications, as the atmosphere can unpredictably re-orient the polarization of a linearly polarized system. A need therefore exists for low loss, miniaturized high frequency filters and antennas for these applications. Moreover, the antenna must satisfy the circular polarization need. This thesis presents a study of dielectric resonator use for the design of a dielectric resonator filter and dielectric resonator antenna, both at Ku-band frequencies for satellite communications applications. Dielectric resonator filters can obtain very high quality factor (Q) responses due to their inherent low loss material, which is lucrative for communications systems, while dielectric resonator antennas can exhibit low loss and high radiation efficiency, but present a challenge in excitation for circular polarization from single feed designs. The filter designed in this research is a four element dielectric resonator filter operating at a center frequency of 13.029 GHz with a bandwidth of 89.5 MHz, and achieving a loaded Q of 145.58. The filter utilizes microstrip excitation of four dielectric resonators in the TE01[subscript lower case delta] resonant mode in iris-coupled cavities mounted on a low loss substrate. An investigation of the substrate topology, parametric studies on the filter parameters, and filter tuning methodologies are presented. This thesis also presents a dielectric resonator antenna achieving right handed circular polarization centered at 12.935 GHz, with a 17.24% 3 dB axial ratio bandwidth. The antenna features a single feed design utilizing back-side microstrip excitation through novel bowtie cross slots, exciting the dielectric resonator in the HEM11[subscript lower case delta] resonant mode. Parametric studies on the antenna parameters are presented and used to tune the final design. A prototype dielectric resonator antenna was fabricated and experimentally verified for impedance matching and radiation patterns showing reasonable agreement with the simulated data.
Author : Mohamad Ismail Sulaiman
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (862 download)
Download or read book Design and Analysis of Singly-fed Dielectric Resonator Antennas with a Wideband Circular Polarization written by Mohamad Ismail Sulaiman and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The proliferation of mobile communications technology increases the demands for faster and more robust services, in addition to the ever decreasing sizes of antennas. These demands can be satisfied using circularly polarized (CP) dielectric resonator antennas (DRAs) exhibiting wide operational bandwidth capability. By utilizing such antennas, the probability of linking the transmitted and received signals is higher, and the system is more reliable since the CP wave is transmitted in all planes and less susceptible to unwanted reflections and absorptions. As CP system is insensitive to the transmitter and receiver orientation, the time consuming practice of continuously aligning the antennas can be avoided. Furthermore, the antennas profile can be reduced simply by using dielectric material with higher permittivity. The thesis focuses on the design and analysis of singly-fed regular-shaped DRAs with a wideband circular polarization. Two new single-point excitation schemes that can be easily used to excite an arbitrarily shaped DRA are introduced, where a square spiral and a rectangular open half-loop are used for DRA excitation. These proposed feeding methods are based on employing conformal conducting metal strips that are placed on the DRA surface. Additionally, two different approaches are employed onto the DRA design to enhance the CP bandwidth. The first approach is based on using a multilayer dielectric, and the second introduces a parasitic half-loop inside the feeding element. The generated broad CP bands have been achieved in conjunction with sufficient impedance matching bandwidths. The studied geometries have been modeled using a comprehensive self developed MoM code that employs the volume surface integral equation (VSIE). The computed results have been validated against those obtained from measurements as well as CST microwave studio simulations. Theoretical and experimental results demonstrate a several folds enhancement in the CP bandwidths compared to those reported in the literature for identical DRA geometries.
Author : Banmali S. Rawat
Publisher : Springer
ISBN 13 : 9811325537
Total Pages : 627 pages
Book Rating : 4.8/5 (113 download)
Download or read book Advances in Signal Processing and Communication written by Banmali S. Rawat and published by Springer. This book was released on 2018-11-19 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of selected peer-reviewed papers presented at the International Conference on Signal Processing and Communication (ICSC 2018). It covers current research and developments in the fields of communications, signal processing, VLSI circuits and systems, and embedded systems. The book offers in-depth discussions and analyses of latest problems across different sub-fields of signal processing and communications. The contents of this book will prove to be useful for students, researchers, and professionals working in electronics and electrical engineering, as well as other allied fields.
Author : Amit Dhawan
Publisher : Springer Nature
ISBN 13 : 9811627614
Total Pages : 1234 pages
Book Rating : 4.8/5 (116 download)
Download or read book Recent Trends in Electronics and Communication written by Amit Dhawan and published by Springer Nature. This book was released on 2021-12-13 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on VLSI, Communication and Signal processing (VCAS 2020). The contents are broadly divided into three topics – VLSI, Communication, and Signal Processing. The book focuses on the latest innovations, trends, and challenges encountered in the different areas of electronics and communication, especially in the area of microelectronics and VLSI design, communication systems and networks, and image and signal processing. It also offers potential solutions and provides an insight into various emerging areas such as Internet of Things (IoT), System on a Chip (SoC), Sensor Networks, underwater and underground communication networks etc. This book will be useful for academicians and professionals alike.
Author : Rajveer S. Yaduvanshi
Publisher : Springer
ISBN 13 : 8132225007
Total Pages : 378 pages
Book Rating : 4.1/5 (322 download)
Download or read book Rectangular Dielectric Resonator Antennas written by Rajveer S. Yaduvanshi and published by Springer. This book was released on 2015-09-24 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : D.J. Hemanth
Publisher : IOS Press
ISBN 13 : 1643681036
Total Pages : 672 pages
Book Rating : 4.6/5 (436 download)
Download or read book Intelligent Systems and Computer Technology written by D.J. Hemanth and published by IOS Press. This book was released on 2020-12-15 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in soft-computation techniques have paved the way for handling huge volumes of data, thereby bringing about significant changes and technological advancements. This book presents the proceedings of the 3rd International Conference on Emerging Current Trends in Computing & Expert Technology (COMET 2020), held at Panimalar Engineering College, Chennai, India on 6 and 7 March 2020. The aim of the book is to disseminate cutting-edge developments taking place in the technological fields of intelligent systems and computer technology, thereby assisting researchers and practitioners from both institutions and industry to upgrade their knowledge of the latest developments and emerging areas of study. It focuses on technological innovations and trendsetting initiatives to improve business values, optimize business processes and enable inclusive growth for corporates, industries and education alike. The book is divided into two sections; ‘Next Generation Soft Computing’ is a platform for scientists, researchers, practitioners and academics to present and discuss their most recent innovations, trends and concerns, as well as the practical challenges encountered in the field. The second section, ‘Evolutionary Networking and Communications’ focuses on various aspects of 5G communications systems and networking, including cloud and virtualization solutions, management technologies, and vertical application areas. It brings together the latest technologies from all over the world, and also provides an excellent international forum for the sharing of knowledge and results from theory, methodology and applications in networking and communications. The book will be of interest to all those working in the fields of intelligent systems and computer technology.
Author : Aldo Petosa
Publisher : Artech House Publishers
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dielectric Resonator Antenna Handbook written by Aldo Petosa and published by Artech House Publishers. This book was released on 2007 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Rainee N. Simons
Publisher : John Wiley & Sons
ISBN 13 : 0471463930
Total Pages : 461 pages
Book Rating : 4.4/5 (714 download)
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
Author : John Volakis
Publisher : McGraw Hill Professional
ISBN 13 : 1259644707
Total Pages : 1424 pages
Book Rating : 4.2/5 (596 download)
Download or read book Antenna Engineering Handbook written by John Volakis and published by McGraw Hill Professional. This book was released on 2018-11-05 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gold-standard reference on the design and application of classic and modern antennas—fully updated to reflect the latest advances and technologiesThis new edition of the “bible of antenna engineering” has been updated to provide start-to-finish coverage of the latest innovations in antenna design and application. You will find in-depth discussion of antennas used in modern communication systems, mobile and personal wireless technologies, satellites, radar deployments, flexible electronics, and other emerging technologies, including 5G, terahertz, and wearable electronics. Antenna Engineering Handbook, Fifth Edition, is bolstered by real-world examples, hundreds of illustrations, and an emphasis on the practical aspects of antennas.Featuring 60 chapters and contributions from more than 80 renowned experts, this acclaimed resource is edited by one of the world’s leading antenna authorities. This edition features all of the classic antenna types, plus new and emerging designs, with 13 all-new chapters and important updates to nearly all chapters from past editions.Antenna Engineering Handbook, Fifth Edition, clearly explains cutting-edge applications in WLANs, automotive systems, PDAs, and handheld devices, making it an indispensable companion for today’s antenna practitioners and developers.Coverage includes:•Antenna basics and classic antennas•Design approaches for antennas and arrays•Wideband and multiband antennas•Antennas for mobile devices and PDAs, automotive applications, and aircraft•Base station and smart antennas•Beamforming and 5G antennas•Millimeter-wave and terahertz antennas•Flexible, wearable, thin film, origami, dielectric, and on-chip antennas•MIMO antennas and phased arrays•Direction-finding and GPS antennas•Active antennas•Low-profile wideband antennas•Nanoantennas•Reflectors and other satellite and radio-telescope antennas•Low-frequency, HF, VHF, UHF, ECM, and ESM antennas•Impedance-matching techniques and material characteristics•Metastructured and frequency selective surfaces•Propagation and guided structures•Computational techniques and toolsets•Indoor and outdoor measurements
Author : Steven Shichang Gao
Publisher : John Wiley & Sons
ISBN 13 : 111837441X
Total Pages : 341 pages
Book Rating : 4.1/5 (183 download)
Download or read book Circularly Polarized Antennas written by Steven Shichang Gao and published by John Wiley & Sons. This book was released on 2014-02-03 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive insight into the design techniques for different types of CP antenna elements and arrays In this book, the authors address a broad range of topics on circularly polarized (CP) antennas. Firstly, it introduces to the reader basic principles, design techniques and characteristics of various types of CP antennas, such as CP patch antennas, CP helix antennas, quadrifilar helix antennas (QHA), printed quadrifilar helix antennas (PQHA), spiral antenna, CP slot antennas, CP dielectric resonator antennas, loop antennas, crossed dipoles, monopoles and CP horns. Advanced designs such as small-size CP antennas, broadband, wideband and ultra-wideband CP antennas are also discussed, as well as multi-band CP antennas and dual CP antennas. The design and analysis of different types of CP array antennas such as broadband CP patch arrays, dual-band CP arrays, CP printed slot arrays, single-band and multi-band CP reflectarrays, high-gain CP waveguide slot antennas, CP dielectric resonator antenna arrays, CP active arrays, millimetre-waveband CP arrays in LTCC, and CP arrays with electronically beam-switching or beam-steering capabilities are described in detail. Case studies are provided to illustrate the design and implementation of CP antennas in practical scenarios such as dual-band Global Navigation Satellite Systems (GNSS) receivers, satellite communication mobile terminals at the S-band, Radio Frequency Identification (RFID) readers at 2.4 GHz, and Ka-band high-speed satellite communication applications. It also includes the detailed designs for a wideband Logarithmic spiral antenna that can operate from 3.4-7.7 GHz. In addition, the book offers a detailed review of the recent developments of different types of CP antennas and arrays. Presents comprehensive discussions of design techniques for different types of CP antennas: small-size CP antennas, broadband CP antennas, multi-band CP antennas and CP arrays. Covers a wide range of antenna technologies such as microstrip antennas, helix, quadrifilar helix antenna, printed quadrifilar helix antenna, dielectric resonator antennas, printed slots, spiral antennas, monopoles, waveguide slot arrays, reflectarrays, active arrays, millimetre-wave arrays in LTCC, electronically beam-switching arrays and electronically beam-steerable arrays. Reviews recent developments in different types of CP antennas and arrays, reported by industries, researchers and academics worldwide. Includes numerous case studies to demonstrate how to design and implement different CP antennas in practical scenarios. Provides both an introduction for students in the field and an in-depth reference for antenna/RF engineers who work on the development of CP antennas. Circularly Polarized Antennas will be an invaluable guide for researchers in R&D organizations; system engineers (antenna, telecom, space and satellite); postgraduates studying the subjects of antenna and propagation, electromagnetics, RF/microwave/millimetre-wave systems, satellite communications and so on; technical managers and professionals in the areas of antennas and propagation.
Author : United States. Patent and Trademark Office
Publisher :
ISBN 13 :
Total Pages : 1484 pages
Book Rating : 4.:/5 (89 download)
Download or read book Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office and published by . This book was released on 2000 with total page 1484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : I. J. Bahl
Publisher : Artech House
ISBN 13 : 1580533094
Total Pages : 509 pages
Book Rating : 4.5/5 (85 download)
Download or read book Lumped Elements for RF and Microwave Circuits written by I. J. Bahl and published by Artech House. This book was released on 2003 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical book is the first comprehensive treatment of lumped elements, which are playing a critical role in the development of the circuits that make these cost-effective systems possible. The book offers professionals an in-depth understanding of the different types of RF and microwave circuit elements.
