Microwave Dielectric Resonators
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Microwave Dielectric Resonators
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Author : Sally J. Nauman
language : en
Publisher:
Release Date : 1965
Microwave Dielectric Resonators written by Sally J. Nauman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Dielectric resonators categories.
The resonant frequencies for the fundamental modes in circular cylindrical and rectangular parallelopiped high dielectric resonators have been calculated by computer for a range of values of physical dimensions and relative dielectric constant. The frequency range extends from zero to 50,000 Mc/sec, the relative dielectric constant from 50 to 1800, and physical dimensions from zero to 500 mils. Results are presented in tabular and graphical form with frequency plotted versus resonator length for parametric values of relative dielectric constant and cross sectional dimensions. A brief review of earlier work with high dielectric resonators is included. Expressions for the resonant frequency and fundamental mode field configurations are given. (Author).
Microwave Dielectric Resonator Tuning
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Author : Uve H. W. Lammers
language : en
Publisher:
Release Date : 1974
Microwave Dielectric Resonator Tuning written by Uve H. W. Lammers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Dielectric resonators categories.
Dielectric resonators have applications as low-loss compact filters in the microwave region. Tuning characteristics of dielectric resonators that might allow for temperature compensation and frequency variability were investigated both theoretically and experimentally at L band. A secondary dielectric resonator that is offset in frequency from the tuned resonator provides a maximum tuning range of approximately 10 percent before an additional filter loss of 3 dB is incurred; the rate of tuning is slow since it is done by changing the resonator coupling (spacing). For fast tuning, a varactor is used in a coupled resonant circuit. Frequency changes can then be made in a time interval approaching 1/(filter bandwidth), but in this case the maximum tuning range before an additional filter loss of 3 dB is incurred is reduced to 2 percent of the filter frequency.
Dielectric Resonators
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Author : Darko Kajfez
language : en
Publisher: Noble Publishing
Release Date : 1998-01-01
Dielectric Resonators written by Darko Kajfez and has been published by Noble Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-01-01 with Technology & Engineering categories.
This is the definite reference text on dielectric resonators used in filters and oscillators. This second edition includes corrections and updates, a new chapter on how to use the program included on a new disk. Sections are devoted to properties of materials, coupling techniques and filter and oscillator design using dielectric resonators. Programs implement the models presented in the book and identify the frequencies of all the modes. Author's Comments After the first publication of Dielectric Resonators by Artech House ran out of print, the book was reprinted by Vector Forum, and that version is also out of print now. As the book has become a popular reference for microwave and RF engineers, it is hoped that the present second edition will be just as useful. No matter what the major use of dielectric resonators will be in the future, the prerequisite for an intelligent application is an understanding of the basic principles of these devices. This book aims to provide that understanding. Publisher's Comments With renewed interest in dielectric resonator technology for modern wireless communications equipment, this book is an excellent reference for its understanding and application. The accompanying programs provided on disk implement the models presented in the book and identify the frequencies of all resonance modes
Microwave Materials And Applications 2 Volume Set
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Author : Mailadil T. Sebastian
language : en
Publisher: John Wiley & Sons
Release Date : 2017-05-08
Microwave Materials And Applications 2 Volume Set written by Mailadil T. Sebastian and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-08 with Technology & Engineering categories.
The recent rapid progress in wireless telecommunication, including the Internet of Things, 5th generation wireless systems, satellite broadcasting, and intelligent transport systems has increased the need for low-loss dielectric materials and modern fabrication techniques. These materials have excellent electrical, dielectric, and thermal properties and have enormous potential, especially in wireless communication, flexible electronics, and printed electronics. Microwave Materials and Applications discusses the methods commonly employed for measuring microwave dielectric properties, the various attempts reported to solve problems of materials chemistry and crystal structure, doping, substitution, and composite formation, highlighting the processing techniques, morphology influences, and applications of microwave materials whilst summarizing many of the recent technical research accomplishments in the area of microwave dielectrics and applications Chapters examine: Oxide ceramics for dielectric resonators and substrates HTCC, LTCC and ULTCC tapes for substrates Polymer ceramic composites for printed circuit boards Elastomer-ceramic composites for flexible electronics Dielectric inks EMI shielding materials Microwave ferrites A comprehensive Appendix presents the fundamental properties for more than 4000 low-loss dielectric ceramics, their composition, crystal structure, and their microwave dielectric properties. Microwave Materials and Applications presents a comprehensive view of all aspects of microwave materials and applications, making it useful for scientists, industrialists, engineers, and students working on current and emerging applications of wireless communications and consumer electronics.
Microwave Resonators And Filters For Wireless Communication
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Author : M. Makimoto
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Microwave Resonators And Filters For Wireless Communication written by M. Makimoto and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Technology & Engineering categories.
This book describes the basic theory of microwave resonators and filters, and practical design methods for wireless communication equipment. The microwave resonators and filters described provide a basis for building more compact, lighter-weight mobile communication equipment with longer operating times.
Dielectric Materials For Wireless Communication
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Author : M. T. Sebastian
language : en
Publisher: Elsevier Science
Release Date : 2008
Dielectric Materials For Wireless Communication written by M. T. Sebastian and has been published by Elsevier Science this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Technology & Engineering categories.
Microwave dielectric materials play a key role in our global society with a wide range of applications, from terrestrial and satellite communication including software radio, GPS, and DBS TV to environmental monitoring via satellite. A small ceramic component made from a dielectric material is fundamental to the operation of filters and oscillators in several microwave systems. In microwave communications, dielectric resonator filters are used to discriminate between wanted and unwanted signal frequencies in the transmitted and received signal. When the wanted frequency is extracted and detected, it is necessary to maintain a strong signal. For clarity it is also critical that the wanted signal frequencies are not affected by seasonal temperature changes. In order to meet the specifications of current and future systems, improved or new microwave components based on dedicated dielectric materials and new designs are required. The recent progress in microwave telecommunication, satellite broadcasting and intelligent transport systems (ITS) has resulted in an increased demand for Dielectric Resonators (DRs). With the recent revolution in mobile phone and satellite communication systems using microwaves as the propagation media, the research and development in the field of device miniaturization has been a major challenge in contemporary Materials Science. In a mobile phone communication, the message is sent from a phone to the nearest base station, and then on via a series of base stations to the other phone. At the heart of each base station is the combiner/filter unit which has the job of receiving the messages, keeping them separate, amplifying the signals and sending then onto the next base station. For such a microwave circuit to work, part of it needs to resonate at the specific working frequency. The frequency determining component (resonator) used in such a high frequency device must satisfy certain criteria. The three important characteristics required for a dielectric resonator are (a) a high dielectric constant which facilitates miniaturization (b) a high quality factor (Qxf) which improves the signal-to-noise ratio, (c) a low temperature coefficient of the resonant frequency which determines the stability of the transmitted frequency. During the past 25 years scientists the world over have developed a large number of new materials (about 3000) or improved the properties of known materials. About 5000 papers have been published and more than 1000 patents filed in the area of dielectric resonators and related technologies. This book brings the data and science of these several useful materials together, which will be of immense benefit to researchers and engineers the world over. The topics covered in the book includes factors affecting the dielectric properties, measurement of dielectric properties, important low loss dielectric material systems such as perovskites, tungsten bronze type materials, materials in BaO-TiO2 system, (Zr,Sn)TiO4, alumina, rutile, AnBn-1O3n type materials, LTCC, ceramic-polymer composites etc. The book also has a data table listing all reported low loss dielectric materials with properties and references arranged in the order of increasing dielectric constant. Key Features: - collects together in one source data on all new materials used in wireless communication - includes tabulated properties of all reported low loss dielectric materials - in-depth treatment of dielectric resonator materials
Lossy Dielectric Resonators For Microwave Absorber And Antenna Applications
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Author : Sofian Hamid
language : en
Publisher:
Release Date : 2021
Lossy Dielectric Resonators For Microwave Absorber And Antenna Applications written by Sofian Hamid and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Waveguide Type Dielectric Resonators General Information And Test Conditions Measurement Method Of Conductivity At Interface Between Conductor Layer And Dielectric Substrate At Microwave Frequency
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Author : British Standards Institute Staff
language : en
Publisher:
Release Date : 1915-09-30
Waveguide Type Dielectric Resonators General Information And Test Conditions Measurement Method Of Conductivity At Interface Between Conductor Layer And Dielectric Substrate At Microwave Frequency written by British Standards Institute Staff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1915-09-30 with categories.
Dielectric devices, Resonators, Waveguide components, Waveguides, Electrical conductivity, Resistance measurement, Dielectric materials, Interfaces, Substrates (insulating), Microwaves
Microwave Materials For Wireless Applications
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Author : David B. Cruickshank
language : en
Publisher: Artech House
Release Date : 2011
Microwave Materials For Wireless Applications written by David B. Cruickshank and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Technology & Engineering categories.
This practical resource offers you an in-depth, up-to-date understanding of the use of microwave magnetic materials for cutting-edge wireless applications. The book discusses device applications used in wireless infrastructure base stations, point-to-point radio links, and a range of more specialized microwave systems. You find detailed discussions on the attributes of each family of magnetic materials with respect to specific wireless applications. Moreover, the book addresses two of the hottest topics in the field today OCo insertion loss and intermodulation. This comprehensive reference also covers ancillary materials that are used with microwave magnetic materials, such as dielectrics, absorbers, and conductors."
Dielectric Resonator Antennas
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Author : Kwai Man Luk
language : en
Publisher: Research Studies Press Limited
Release Date : 2003
Dielectric Resonator Antennas written by Kwai Man Luk and has been published by Research Studies Press Limited this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Antennas categories.
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.