Mit Pcm Based Rf Switches For Tunable Filter Application
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Mit Pcm Based Rf Switches For Tunable Filter Application
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Author : Junwen Jiang
language : en
Publisher:
Release Date : 2019
Mit Pcm Based Rf Switches For Tunable Filter Application written by Junwen Jiang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Tunable filters are promising for reducing the size of communication systems by replacing switch filter bank, also they are gaining more attention for satellite applications which will need to change the frequency bands. One of the main requirements for tunable filters is to maintain low passband insertion loss and high stopband rejection over the tuning range. The key to achieving this goal is using high quality factor (high-Q) resonators such as three-dimensional (3D) structure resonators (dielectric resonators, coaxial resonators, waveguide resonators, etc.). For high-Q tunable filters, not only do the resonators need to have high unloaded Q, the tuning elements also need to have low loss. Over the past years, various tuning techniques have been employed to realize tunable filters, including solid-state tuning, mechanical tuning, piezoelectric tuning, magnetic tuning, and MEMS tuning. All of these techniques have both advantages and drawbacks in terms of insertion loss, DC power consumption, tuning speed, non-linearity, and reliability. The objective of the research presented in this thesis is to investigate the feasibility of using metal-insulating transition (MIT) material and phase-change material (PCM) to realize high-Q tunable/ reconfigurable filters for base station in communication and satellite applications. Fabrication methods of MIT material VO2 (Vanadium Dioxide) and PCM GeTe (Germanium Telluride) are first investigated to obtain optimal MIT/PCM materials with high resistivity ratio between different states. RF switches based on both VO2 and GeTe integrated with micro-heaters are then developed. VO2-based variable attenuators are realized at both X-band and Ka-band. A switch capacitor bank is also designed and fabricated, integrating GeTe RF switches and MIM (metal-insulator-metal) capacitors in a six-layer microfabrication process. A novel structure for wideband dielectric substrate-based filters is developed. The cavity of the filter is separated into two thin dielectric substrates (DSs), a metal frame for holding the dielectric substrates, and two metal covers. The filter is compact in size and ideal for integration with antennas because of its relatively thin profile. Since it uses separated DSs attached to the two sides of the metal frame, the input/output probe can be placed at the middle of the cavity, leading to a significant increase in the input/output coupling compared to conventional dielectric resonator filters. Additionally, the filter structure lends itself to realizing relatively large values of inter-resonator coupling. A five-pole Chebyshev filter with a fractional bandwidth of 9.6%, a four-pole filter having two transmission zeros with a fractional bandwidth of 9%, and a three-pole filter with a fractional bandwidth of 13% are designed, fabricated and tested. The filter structure promises to be useful in sub-6 GHz 5G base station applications that require the use of low-cost, miniature, high-Q wideband filters with a thin profile. Furthermore, a novel tuning structure with multiple strip lines is developed in this work. The tuning structure is designed to employ RF switches to tune 3D filters, eliminating the need to use variable capacitor loading, which is known to degrade the filter's loaded Q over the tuning range. Two- and three-pole filters with combline configuration are designed, fabricated and measured with wire bonding, MEMS switches, and VO2 switches. With wire bonding, all of the tuning states demonstrate measured Q higher than 2000, whereas with the fabricated VO2 switches, the measured Q was lower. The test data confirm however the tunability and feasibility of using the proposed tuning scheme to realize a reasonable high-Q tunable filters that maintain Q values over the tuning range. A DS-loaded three-pole tunable filter is designed, fabricated, and measured. The results show the potential of realizing a tunable dielectric filter with a low loss VO2-based switch.
Software Defined Radio For Engineers
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Author : Alexander M. Wyglinski
language : en
Publisher: Artech House
Release Date : 2018-04-30
Software Defined Radio For Engineers written by Alexander M. Wyglinski and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-30 with Technology & Engineering categories.
Based on the popular Artech House classic, Digital Communication Systems Engineering with Software-Defined Radio, this book provides a practical approach to quickly learning the software-defined radio (SDR) concepts needed for work in the field. This up-to-date volume guides readers on how to quickly prototype wireless designs using SDR for real-world testing and experimentation. This book explores advanced wireless communication techniques such as OFDM, LTE, WLA, and hardware targeting. Readers will gain an understanding of the core concepts behind wireless hardware, such as the radio frequency front-end, analog-to-digital and digital-to-analog converters, as well as various processing technologies. Moreover, this volume includes chapters on timing estimation, matched filtering, frame synchronization message decoding, and source coding. The orthogonal frequency division multiplexing is explained and details about HDL code generation and deployment are provided. The book concludes with coverage of the WLAN toolbox with OFDM beacon reception and the LTE toolbox with downlink reception. Multiple case studies are provided throughout the book. Both MATLAB and Simulink source code are included to assist readers with their projects in the field.
Ellipsometry At The Nanoscale
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Author : Maria Losurdo
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-12
Ellipsometry At The Nanoscale written by Maria Losurdo 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 2013-03-12 with Technology & Engineering categories.
This book presents and introduces ellipsometry in nanoscience and nanotechnology making a bridge between the classical and nanoscale optical behaviour of materials. It delineates the role of the non-destructive and non-invasive optical diagnostics of ellipsometry in improving science and technology of nanomaterials and related processes by illustrating its exploitation, ranging from fundamental studies of the physics and chemistry of nanostructures to the ultimate goal of turnkey manufacturing control. This book is written for a broad readership: materials scientists, researchers, engineers, as well as students and nanotechnology operators who want to deepen their knowledge about both basics and applications of ellipsometry to nanoscale phenomena. It starts as a general introduction for people curious to enter the fields of ellipsometry and polarimetry applied to nanomaterials and progresses to articles by experts on specific fields that span from plasmonics, optics, to semiconductors and flexible electronics. The core belief reflected in this book is that ellipsometry applied at the nanoscale offers new ways of addressing many current needs. The book also explores forward-looking potential applications.
Rf And Microwave Transmitter Design
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Author : Andrei Grebennikov
language : en
Publisher: John Wiley & Sons
Release Date : 2011-09-19
Rf And Microwave Transmitter Design written by Andrei Grebennikov 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 2011-09-19 with Technology & Engineering categories.
RF and Microwave Transmitter Design is unique in its coverage of both historical transmitter design and cutting edge technologies. This text explores the results of well-known and new theoretical analyses, while informing readers of modern radio transmitters' pracitcal designs and their components. Jam-packed with information, this book broadcasts and streamlines the author's considerable experience in RF and microwave design and development.
Microwave Circuit Design Using Linear And Nonlinear Techniques
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Author : George D. Vendelin
language : en
Publisher: John Wiley & Sons
Release Date : 2005-10-03
Microwave Circuit Design Using Linear And Nonlinear Techniques written by George D. Vendelin 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 2005-10-03 with Technology & Engineering categories.
The ultimate handbook on microwave circuit design with CAD. Full of tips and insights from seasoned industry veterans, Microwave Circuit Design offers practical, proven advice on improving the design quality of microwave passive and active circuits-while cutting costs and time. Covering all levels of microwave circuit design from the elementary to the very advanced, the book systematically presents computer-aided methods for linear and nonlinear designs used in the design and manufacture of microwave amplifiers, oscillators, and mixers. Using the newest CAD tools, the book shows how to design transistor and diode circuits, and also details CAD's usefulness in microwave integrated circuit (MIC) and monolithic microwave integrated circuit (MMIC) technology. Applications of nonlinear SPICE programs, now available for microwave CAD, are described. State-of-the-art coverage includes microwave transistors (HEMTs, MODFETs, MESFETs, HBTs, and more), high-power amplifier design, oscillator design including feedback topologies, phase noise and examples, and more. The techniques presented are illustrated with several MMIC designs, including a wideband amplifier, a low-noise amplifier, and an MMIC mixer. This unique, one-stop handbook also features a major case study of an actual anticollision radar transceiver, which is compared in detail against CAD predictions; examples of actual circuit designs with photographs of completed circuits; and tables of design formulae.
Neuromorphic Photonics
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Author : Paul R. Prucnal
language : en
Publisher: CRC Press
Release Date : 2017-05-08
Neuromorphic Photonics written by Paul R. Prucnal and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-08 with Science categories.
This book sets out to build bridges between the domains of photonic device physics and neural networks, providing a comprehensive overview of the emerging field of "neuromorphic photonics." It includes a thorough discussion of evolution of neuromorphic photonics from the advent of fiber-optic neurons to today’s state-of-the-art integrated laser neurons, which are a current focus of international research. Neuromorphic Photonics explores candidate interconnection architectures and devices for integrated neuromorphic networks, along with key functionality such as learning. It is written at a level accessible to graduate students, while also intending to serve as a comprehensive reference for experts in the field.
Microwave Mobile Communications An Ieee Press Classic Reissue
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Author : William C. Jakes
language : en
Publisher: Wiley-IEEE Press
Release Date : 1994-05-16
Microwave Mobile Communications An Ieee Press Classic Reissue written by William C. Jakes and has been published by Wiley-IEEE Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-05-16 with Technology & Engineering categories.
This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.
Embedded Memory Design For Multi Core And Systems On Chip
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Author : Baker Mohammad
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-10-22
Embedded Memory Design For Multi Core And Systems On Chip written by Baker Mohammad 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 2013-10-22 with Technology & Engineering categories.
This book describes the various tradeoffs systems designers face when designing embedded memory. Readers designing multi-core systems and systems on chip will benefit from the discussion of different topics from memory architecture, array organization, circuit design techniques and design for test. The presentation enables a multi-disciplinary approach to chip design, which bridges the gap between the architecture level and circuit level, in order to address yield, reliability and power-related issues for embedded memory.
Analog Circuit Design
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Author : Willy M.C. Sansen
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Analog Circuit Design written by Willy M.C. Sansen 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 new book on Analog Circuit Design contains the revised contributions of all the tutorial speakers of the eight workshop AACD (Advances in Analog Circuit Design), which was held at Nice, France on March 23-25, 1999. The workshop was organized by Yves Leduc of TI Nice, France. The program committee consisted of Willy Sansen, K.U.Leuven, Belgium, Han Huijsing, T.U.Delft, The Netherlands and Rudy van de Plassche, T.U.Eindhoven, The Netherlands. The aim of these AACD workshops is to bring together a restricted group of about 100 people who are personally advancing the frontiers of analog circuit design to brainstorm on new possibilities and future developments in a restricted number of fields. They are concentrated around three topics. In each topic six speakers give a tutorial presentation. Eighteen papers are thus included in this book. The topics of 1999 are: (X)DSL and other communication systems RF MOST models Integrated filters and oscillators The other topics, which have been coverd before, are: 1992 Operational amplifiers A-D Converters Analog CAD 1993 Mixed-mode A+D design Sensor interfaces Communication circuits 1994 Low-power low-voltage design Integrated filters Smart power 1995 Low-noise low-power low-voltge design Mixed-mode design with CAD tools Voltage, current and time references vii viii 1996 RF CMOS circuit design Bandpass sigma-delta and other data converters Translinear circuits 1997 RF A-D Converters Sensor and actuator interfaces Low-noise oscillators, PLL's and synthesizers 1998 I-Volt electronics Design and implementation of mixed-mode systems Low-noise amplifiers and RF power amplifiers for telecommunications
Liquid Crystals With Nano And Microparticles In 2 Volumes
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Author : Jan P F Lagerwall
language : en
Publisher: World Scientific
Release Date : 2016-10-10
Liquid Crystals With Nano And Microparticles In 2 Volumes written by Jan P F Lagerwall and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-10 with Science categories.
'The overall book content is excellently coordinated to form a synchronised story, interesting to a broad scientific audience … The book summarises the present knowledge in the field, introduces fundamental concepts to the beginners, describes key measuring methods and presents several different typical demonstrative systems, some of them exhibiting an extraordinary rich spectrum of structures and superstructures. I am sure that with time the book will become an attractor to a broad audience (physicists, chemists, material scientists, engineers, etc.), ranging from students, beginners in the field to experienced researchers. To summarise, this is the book that I have been missing on my bookshelf.'Liquid Crystals TodayWhile liquid crystals are today widely known for their successful application in flat panel displays (LCDs), academic liquid crystal research is more and more targeting situations where these anisotropic fluids are put to completely different use, in varying contexts. A particularly strong focus is on colloidal liquid crystals, where particles, bubbles or drops are dispersed in a liquid crystal phase. The liquid crystal can act as a host phase, with the inclusions constituting foreign guests that disturb the local order in interesting ways, often resulting in large-scale positional arrangement and/or uniform alignment of the guests. But it may also be formed by solid particles themselves, if these are of nanoscale dimensions and of disc- or rod-shape, and if they are suspended in an isotropic liquid host at sufficient concentration.This book aims to cover both the modern research tracks, gathering pioneering researchers of the different subfields to give a concise overview of the basis as well as the prospects of their respective specialties. The scope spans from curiosity-driven fundamental scientific research to applied sciences. Over the course of the next decade, the former is likely to generate new tracks of the latter type, considering the exploratory and productive phase of this young research field.