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Download or read book Circularly Polarized Rectangular Dielectric Resonator Antennas for Personal Communications written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Biswajeet Mukherjee
Publisher : Artech House
ISBN 13 : 1630818712
Total Pages : 290 pages
Book Rating : 4.6/5 (38 download)
Download or read book Dielectric Resonator Antennas written by Biswajeet Mukherjee and published by Artech House. This book was released on 2021-11-30 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
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 : 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 : 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 : 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 : 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 : Shok Theng Low
Publisher :
ISBN 13 :
Total Pages : 291 pages
Book Rating : 4.:/5 (643 download)
Download or read book Linearly and Circularly Polarised Rectangular Dielectric Resonator Antennas written by Shok Theng Low and published by . This book was released on 2006 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Suresh Chandra Satapathy
Publisher : Springer
ISBN 13 : 9811042802
Total Pages : 674 pages
Book Rating : 4.8/5 (11 download)
Download or read book Proceedings of 2nd International Conference on Micro-Electronics, Electromagnetics and Telecommunications written by Suresh Chandra Satapathy and published by Springer. This book was released on 2017-09-06 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of best papers presented in the Second International Conference on Microelectronics Electromagnetics and Telecommunication (ICMEET 2016), an international colloquium, which aims to bring together academic scientists, researchers and research scholars to discuss the recent developments and future trends in the fields of microelectronics, electromagnetics and telecommunication. Microelectronics research investigates semiconductor materials and device physics for developing electronic devices and integrated circuits with data/energy efficient performance in terms of speed, power consumption, and functionality. The book discusses various topics like analog, digital and mixed signal circuits, bio-medical circuits and systems, RF circuit design, microwave and millimeter wave circuits, green circuits and systems, analog and digital signal processing, nano electronics and giga scale systems, VLSI circuits and systems, SoC and NoC, MEMS and NEMS, VLSI digital signal processing, wireless communications, cognitive radio, and data communication.
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 : Ladislau Matekovits
Publisher : Springer Nature
ISBN 13 : 3030876055
Total Pages : 372 pages
Book Rating : 4.0/5 (38 download)
Download or read book Printed Antennas for 5G Networks written by Ladislau Matekovits and published by Springer Nature. This book was released on 2022-04-02 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive overview of antennas for 5G technology, such as MIMO, multiband antennas, Magneto-Electric Dipole Antenna and PIFA Antenna for 5G networks, phased array antennas for 5G access, beam-forming and beam-steering issues, 5G antennas for specific applications (smartphone, cognitive radio) and advance antenna concept and materials for 5G. The book also covers ooptimizations methods for passive and active devices in mm-Wave 5G networks. It explores topics which influence the design and characterization of antennas such as data rates, high isolation, pattern and spatial diversity, making 5G antennas more suitable for a multipath environment. The book represents a learning tool for researchers in the field, and enables engineers, designers and manufacturers to identify key design challenges of antennas for 5G networks, and characterize novel antennas for 5G networks.
Author : Rajveer S. Yaduvanshi
Publisher : IET
ISBN 13 : 1839533552
Total Pages : 414 pages
Book Rating : 4.8/5 (395 download)
Download or read book Terahertz Dielectric Resonator Antennas for High Speed Communication and Sensing written by Rajveer S. Yaduvanshi and published by IET. This book was released on 2021-12-13 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the theory, modelling, design and implementations of Terahertz Dielectric Resonator Antenna technologies at microwave, terahertz or optical frequencies for future applications in wireless high-speed communication, wireless personal communication and sensor networks. Case studies with prototype models are included.
Author : Defence Research Establishment Ottawa
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (432 download)
Download or read book Mutual Coupling Between Rectangular Dielectric Resonator Antenna Elements written by Defence Research Establishment Ottawa and published by . This book was released on 1998 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric resonator antennas (DRAs) have been suggested as a potentially efficient antenna for use in Personal Communication Systems, Global Positioning Systems and wireless computer networks. They offer several advantages, such as high efficiency, large bandwidth, low profile, small size, ease of fabrication, and low production cost. This paper examines characteristics of the rectangular DRA, both as individual radiating elements as well as elements in array environments. Numerical methods are used to obtain detailed information with respect to the resonant frequency, bandwidth, scattering parameters, input impedance, field structures and radiation patterns on which DRA design is based. This obtained information is then used to help in understanding and quantizing the interaction between elements in close proximity, i.e. mutual coupling. This coupling analysis provides important information for the array design process, as well as the necessary information required to positively exploit these coupling characteristics. The simulation software provides data that very closely matches both experimentation and the theoretical models. Mutual coupling measurements indicate that, beyond a spacing of one half-wavelength, there is very little mutual interaction. This mutual coupling was exploited at lesser distances however with parasitically coupled dielectric elements used to create novel single feed multi-element antennas with altered resonant frequencies, increased bandwidth and enhanced radiation patterns, as compared to a single element.
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 :
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110562804
Total Pages : 353 pages
Book Rating : 4.1/5 (15 download)
Download or read book Circularly Polarized Antenna Technology written by and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-11-23 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents basic and advanced concepts of circularly polarized antennas, including design procedure and recent applications. Cross dipole antennas, microstrip antennas, helical antennas, quadrifilar helix antennas, frequency independent antennas, horn antennas, omnidirectional circularly polarized antennas and radial line arry antennas are discussed. With abundant examples, the book is an essential reference for researchers and engineers.
Author : Kyohei Fujimoto
Publisher : Cambridge University Press
ISBN 13 : 1107354668
Total Pages : pages
Book Rating : 4.1/5 (73 download)
Download or read book Modern Small Antennas written by Kyohei Fujimoto and published by Cambridge University Press. This book was released on 2014-01-09 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: If you are involved in designing and developing small antennas, this complete cutting-edge guide covers everything you need to know. From fundamentals and basic theory to design optimization, evaluation, measurements and simulation techniques, all the essential information is included. You will also get many practical examples from a range of wireless systems, whilst a glossary is provided to bring you up to speed on the latest terminology. A wide variety of small antennas is covered, and design and practice steps are described for each type: electrically small, functionally small, physically constrained small and physically small. Whether you are a professional in industry, a researcher, or a graduate student, this is your essential guide to small antennas.
Author : Krishan, Ram
Publisher : IGI Global
ISBN 13 : 1668470012
Total Pages : 390 pages
Book Rating : 4.6/5 (684 download)
Download or read book Innovative Smart Materials Used in Wireless Communication Technology written by Krishan, Ram and published by IGI Global. This book was released on 2023-03-03 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, wireless communication has become an integral part of daily life, allowing people across the world to communicate with each other easily, regardless of their geographical location. As these technologies develop, innovations are made in the ways in which they are constructed. Emerging trends in smart material usage in wireless technology requires further investigation for the optimization of next-generation communication technology. Innovative Smart Materials Used in Wireless Communication Technology focuses on the advancements of smart material usage in wireless communication technologies. It analyzes the design, usage, and construction of these smart materials for wireless applications. Covering topics such as millimeter wave antennas, semiconductor materials, and wearable applications, this premier reference source is an essential resource for material engineers and scientists, communications scientists, manufacturers, students and educators of higher education, librarians, researchers, and academicians.
