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Author : Thomas David Kudrle
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.E/5 ( download)
Download or read book Design and Fabrication of High Performance RF MEMS Devices written by Thomas David Kudrle and published by . This book was released on 2000 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vijay K. Varadan
Publisher : John Wiley & Sons
ISBN 13 : 0470846194
Total Pages : 406 pages
Book Rating : 4.4/5 (78 download)
Download or read book RF MEMS and Their Applications written by Vijay K. Varadan and published by John Wiley & Sons. This book was released on 2003-07-25 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microelectromechanical systems (MEMS) refer to a collection of micro-sensors and actuators, which can react to environmental change under micro- circuit control. The integration of MEMS into traditional Radio Frequency (RF) circuits has resulted in systems with superior performance levels and lower manufacturing costs. The incorporation of MEMS based fabrication technologies into micro and millimeter wave systems offers viable routes to ICs with MEMS actuators, antennas, switches and transmission lines. The resultant systems operate with an increased bandwidth and increased radiation efficiency and have considerable scope for implementation within the expanding area of wireless personal communication devices. This text provides leading edge coverage of this increasingly important area and highlights the overlapping information requirements of the RF and MEMS research and development communities. * Provides an introduction to micromachining techniques and their use in the fabrication of micro switches, capacitors and inductors * Includes coverage of MEMS devices for wireless and Bluetooth enabled systems Essential reading for RF Circuit design practitioners and researchers requiring an introduction to MEMS technologies, as well as practitioners and researchers in MEMS and silicon technology requiring an introduction to RF circuit design.
Author : Héctor J. de los Santos
Publisher : Artech House
ISBN 13 : 9781580535571
Total Pages : 298 pages
Book Rating : 4.5/5 (355 download)
Download or read book RF MEMS Circuit Design for Wireless Communications written by Héctor J. de los Santos and published by Artech House. This book was released on 2002 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive book to address the design of RF MEMS-based circuits for use in high performance wireless systems. A groundbreaking research and reference tool, the book enables you to understand the realm of applications of RF MEMS technology; become knowledgeable of the wide variety and performance levels of RF MEMS devices; and partition the architecture of wireless systems to achieve greater levels of performance. This innovative resource also guides you through the design process of RF MEMS-based circuits, and establishes a practical knowledge base for the design of high-yield RF MEMS-based circuits. The book features exercises and detailed case studies on working RF MEMS circuits that help you decide what approaches best fit your design constraints. This unified treatment of RF MEMS-based circuit technology opens up a new world of solutions for meeting the unique challenges of low power/portable wireless products.
Author : Jianqun Wang
Publisher : ProQuest
ISBN 13 : 9780549144724
Total Pages : pages
Book Rating : 4.1/5 (447 download)
Download or read book Polymer-based RF MEMS Devices written by Jianqun Wang and published by ProQuest. This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The radio frequency micro-electro-mechanical system (RF MEMS) technology is rapidly transitioning from the research stage to commercial applications. Reducing material and fabrication costs, realizing IC compatibility, and improving the RF performance have been main focal points of many recent works. In this dissertation, we target at developing a RF MEMS methodology which realizes CMOS compatibility, cost effectiveness and high performance at the same time. The current RF MEMS devices are mostly constructed on quartz and III-V compound materials to achieve low RF losses. These approaches proved to have excellent RF performance. However these materials are expensive and unable to be integrated into CMOS circuitry. In this work, we developed a CMOS-compatible approach to construct RF MEMS components where low-resistivity silicon and plastic were used as the substrate material and dielectric layer, respectively. This method is cost-effective and presents very high RF performance. Coplanar waveguide (CPW) transmission lines were first realized using this approach. Devices were characterized from DC to 26 GHz, a low insertion loss of 3 dB/cm was achieved. Soft substrate of Kapton film was also used to build CPW lines to answer the increasing trend of flexible devices such as RFIDs, cell phone antennas and soft displays. A very low transmission loss of 1 dB/cm was obtained. Additionally, multiple devices with various dimensional emphases were fabricated to suit different dimensional situations. A novel method of building CMOS-compatible distributed MEMS transmission line (DMTL) phase shifters was developed. A thick layer of Kapton film was bonded on a low-resistivity silicon substrate to prevent RF signal leakage. Design considerations, fabrication processes and measurement results were discussed in detail. For comparison purposes, DMTL phase shifters were constructed on glass substrates as well. In order to verify the design roles and fit for different space situations, various phase shifters were fabricated using this method. Our devices showed comparable results to those built on quartz and III-V compound substrates. Tunable filters are essential elements for modern communication systems. Using the same polymer-silicon method, we built two types of tunable filters--partialloaded short-ended filter and even-loaded open-ended filter. Design methodology, fabrication and measurements were discussed. Our tunable filter demonstrated a 2-GHz tunability and a 10-dB transmission loss. Failure mechanisms and possible improving methods were examined for possible improvements. The fabrication process of the polymer-silicon approach developed for RF MEMS devices is simple, cost-effective and CMOS compatible. It virtually applies to any situation where quartz, III-V compound materials or other CMOS-incompatible materials have to be used for RF performance purposes. Thus, at the end of this dissertation, impedance tuners, digital controlled RF MEMS devices and a RF MEMS packaging technique using this polymer-silicon method were proposed for future works.
Author : Deepak Uttamchandani
Publisher : Elsevier
ISBN 13 : 0857098616
Total Pages : 640 pages
Book Rating : 4.8/5 (57 download)
Download or read book Handbook of Mems for Wireless and Mobile Applications written by Deepak Uttamchandani and published by Elsevier. This book was released on 2013-08-31 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing demand for mobile and wireless sensing necessitates the use of highly integrated technology featuring small size, low weight, high performance and low cost: micro-electro-mechanical systems (MEMS) can meet this need. The Handbook of MEMS for wireless and mobile applications provides a comprehensive overview of radio frequency (RF) MEMS technologies and explores the use of these technologies over a wide range of application areas.Part one provides an introduction to the use of RF MEMS as an enabling technology for wireless applications. Chapters review RF MEMS technology and applications as a whole before moving on to describe specific technologies for wireless applications including passive components, phase shifters and antennas. Packaging and reliability of RF MEMS is also discussed. Chapters in part two focus on wireless techniques and applications of wireless MEMS including biomedical applications, such as implantable MEMS, intraocular pressure sensors and wireless drug delivery. Further chapters highlight the use of RF MEMS for automotive radar, the monitoring of telecommunications reliability using wireless MEMS and the use of optical MEMS displays in portable electronics.With its distinguished editor and international team of expert authors, the Handbook of MEMS for wireless and mobile applications is a technical resource for MEMS manufacturers, the electronics industry, and scientists, engineers and academics working on MEMS and wireless systems. - Reviews the use of radio frequency (RF) MEMS as an enabling technology for wireless applications - Discusses wireless techniques and applications of wireless MEMS, including biomedical applications - Describes monitoring structures and the environment with wireless MEMS
Author : Jacopo Iannacci
Publisher : John Wiley & Sons
ISBN 13 : 3527673946
Total Pages : 374 pages
Book Rating : 4.5/5 (276 download)
Download or read book Practical Guide to RF-MEMS written by Jacopo Iannacci and published by John Wiley & Sons. This book was released on 2013-08-12 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Closes the gap between hardcore-theoretical and purely experimental RF-MEMS books. The book covers, from a practical viewpoint, the most critical steps that have to be taken in order to develop novel RF-MEMS device concepts. Prototypical RF-MEMS devices, both including lumped components and complex networks, are presented at the beginning of the book as reference examples, and these are then discussed from different perspectives with regard to design, simulation, packaging, testing, and post-fabrication modeling. Theoretical concepts are introduced when necessary to complement the practical hints given for all RF-MEMS development stages. Provides researchers and engineers with invaluable practical hints on how to develop novel RF-MEMS device concepts Covers all critical steps, dealing with design, simulation, optimization, characterization and fabrication of MEMS for radio-frequency applications Addresses frequently disregarded issues, explicitly treating the hard to predict interplay between the three-dimensional device structure and its electromagnetic functionality Bridges theory and experiment, fundamental concepts are introduced with the application in mind, and simulation results are validated against experimental results Appeals to the practice-oriented R&D reader: design and simulation examples are based on widely known software packages such as ANSYS and the hardware description language Verilog.
Author : Gabriel M. Rebeiz
Publisher : John Wiley & Sons
ISBN 13 : 0471462888
Total Pages : 512 pages
Book Rating : 4.4/5 (714 download)
Download or read book RF MEMS written by Gabriel M. Rebeiz and published by John Wiley & Sons. This book was released on 2004-02-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasmall Radio Frequency and Micro-wave Microelectromechanical systems (RF MEMs), such as switches, varactors, and phase shifters, exhibit nearly zero power consumption or loss. For this reason, they are being developed intensively by corporations worldwide for use in telecommunications equipment. This book acquaints readers with the basics of RF MEMs and describes how to design practical circuits and devices with them. The author, an acknowledged expert in the field, presents a range of real-world applications and shares many valuable tricks of the trade.
Author : Ai-Qun Liu
Publisher : Springer Science & Business Media
ISBN 13 : 0387462627
Total Pages : 276 pages
Book Rating : 4.3/5 (874 download)
Download or read book RF MEMS Switches and Integrated Switching Circuits written by Ai-Qun Liu and published by Springer Science & Business Media. This book was released on 2010-08-09 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microelectromechanical Systems (MEMS) stand poised for the next major breakthrough in the silicon revolution that began with the transistor in the 1960s and has revolutionized microelectronics. MEMS allow one to not only observe and process information of all types from small scale systems, but also to affect changes in systems and the environment at that scale. “RF MEMS Switches and Integrated Switching Circuits” builds on the extensive body of literature that exists in research papers on analytical and numerical modeling and design based on RF MEMS switches and micromachined switching circuits, and presents a unified framework of coverage. This volume includes, but is not limited to, RF MEMS approaches, developments from RF MEMS switches to RF switching circuits, and MEMS switch components in circuit systems. This book also: -Presents RF Switches and switching circuit MEMS devices in a unified framework covering all aspects of engineering innovation, design, modeling, fabrication, control and experimental implementation -Discusses RF switch devices in detail, with both system and component-level circuit integration using micro- and nano-fabrication techniques -Includes an emphasis on design innovation and experimental relevance rather than basic electromagnetic theory and device physics “RF MEMS Switches and Integrated Switching Circuits” is perfect for engineers, researchers and students working in the fields of MEMS, circuits and systems and RFs.
Author : Nuria Torres Matabosch
Publisher :
ISBN 13 :
Total Pages : 119 pages
Book Rating : 4.:/5 (868 download)
Download or read book Design for Reliability Applied to RF-MEMS Devices and Circuits Issued from Different TRL Environments written by Nuria Torres Matabosch and published by . This book was released on 2013 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is intended to deal with reliability of RF-MEMS devices (switches, in particular) from a designer point of view using different fabrication process approaches. This means that the focus will be on how to eliminate or alleviate at the design stage the effects of the most relevant failure mechanisms in each case rather than studying the underlying physics of failure. The detection of the different failure mechanisms are investigated using the RF performance of the device and the developed equivalent circuits. This novel approach allows the end-user to infer the evolution of the device performance versus time going one step further in the Design for Reliability in RF-MEMS. The division of the fabrication process has been done using the Technology Readiness Level of the process. It assesses the maturity of the technology prior to incorporating it into a system or subsystem. An analysis of the different R&D approaches will be presented by highlighting the differences between the different levels in the TRL classification. This thesis pretend to show how reliability can be improved regarding the approach of the fabrication process starting from a very flexible one (LAAS-CNRS as example of low-TRL) passing through a component approach (CEA-Leti as example of medium-TRL) and finishing with a standard co-integrated CMOS-MEMS process (IHP example of high TRL).
Author : Stephen I Long
Publisher : CRC Press
ISBN 13 : 1003810799
Total Pages : 522 pages
Book Rating : 4.0/5 (38 download)
Download or read book Communication Electronics: RF Design with Practical Applications using Pathwave/ADS Software written by Stephen I Long and published by CRC Press. This book was released on 2024-01-22 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text/reference develops practical intuition into the art of RF circuit design and introduces users to the widely used simulation tool, Pathwave ADS, from Keysight Technologies. By using project-oriented assignments, it builds a strong foundation and focuses on practical applications illustrated by examples, simulation tutorials, and homework problems. Learning through doing has proven to be an effective preparatory tool for more advanced and complex applications, and this book is developed from the author’s lecture notes for a senior/graduate class at University of California Santa Barbara. The class had a significant lab component employing measurement techniques, board-level prototyping, and RFIC design. Falling somewhere between a traditional textbook and a practical handbook, it focuses mainly on analog RF analysis and design and circuit simulation techniques.
Author : Lakshmi Swaminathan
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book RF MEMS Switch Fabrication and Packaging written by Lakshmi Swaminathan and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: RF (Radio Frequency) MEMS (Micro Electro Mechanical Systems) technology is the application of micromachined mechanical structures, controlled by electrical signals and interacting with signals in the RF range. The applications of these devices range from switching networks for satellite communication systems to high performance resonators and tuners. RF MEMS switches are the first and foremost MEMS devices designed for RF technology. A specialized method for fabricating microsturctures called surface micromachining process is used for fabricating the RF MEMS switches. Die level packaging using available surface mount style RF packages. The packaging process involved the design of RF feed throughs on the Alumina substrates to the die attachment, wire bonding and hermetic sealing using low temperature processes.
Author : Stella Chang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Design, Optimization and Fabrication of Amorphous Silicon Tunable RF MEMS Inductors and Transformers written by Stella Chang and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stepan Lucyszyn
Publisher : Cambridge University Press
ISBN 13 : 1139491660
Total Pages : 441 pages
Book Rating : 4.1/5 (394 download)
Download or read book Advanced RF MEMS written by Stepan Lucyszyn and published by Cambridge University Press. This book was released on 2010-08-19 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date guide to the theory and applications of RF MEMS. With detailed information about RF MEMS technology as well as its reliability and applications, this is a comprehensive resource for professionals, researchers, and students alike. • Reviews RF MEMS technologies • Illustrates new techniques that solve long-standing problems associated with reliability and packaging • Provides the information needed to incorporate RF MEMS into commercial products • Describes current and future trends in RF MEMS, providing perspective on industry growth • Ideal for those studying or working in RF and microwave circuits, systems, microfabrication and manufacturing, production management and metrology, and performance evaluation
Author : Sara Sharifian Attar
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (96 download)
Download or read book Low Temperature Superconducting RF MEMS Devices written by Sara Sharifian Attar and published by . This book was released on 2014 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Superconducting microelectronics technology (SME) has the potential of realizing high speed digital receivers capable of performing direct digitization of radio frequency signals with very low power consumption. An SME receiver is implemented on a single chip using low-temperature superconducting (LTS) Josephson junctions (JJs). The technology provides ultrafast digital switches and logic circuits along with high linearity analog-to-digital converters (ADCs). However, SME technology offers limited choices for realizing reconfigurable analog front-ends. While a tunable inductor using a string of JJs or superconducting quantum interference devices (SQUIDs) can be realized using the SME technology, the main problems with these tuning inductor elements are poor linearity performance and low power handling. RF MEMS technology has the capability to offer highly linear and high power handling tuning elements such as switches and varactors. To integrate a receiver with radio frequency (RF) front-end on a single chip, MEMS devices need to be fabricated using the same fabrication process as SME technology. In this study, a post-processing technique is developed and optimized to release the MEMS parts of the SME chip while keeping the SME electronics intact. Another challenge is to design MEMS structures that can handle extreme low-temperature working environments. For the first time, superconducting niobium-based RF MEMS dc-contact switches, capacitive-contact switches and varactors are developed employing the SME technology, operating at 4K. The loss in all of the devices is extremely low and the quality factor is quite high when niobium superconducts. The mechanical performance of the MEMS structures are investigated at liquid nitrogen and liquid helium temperatures of 77k and 4K, respectively. The deformation of the MEMS structures and material stiffness at cryogenic temperature are also investigated. Additionally, more advanced tunable RF circuits are developed, fabricated and characterized, implementing the primary devices. Two types of MEMS capacitor banks are designed, post-processed and characterized using the dc-contact and capacitive-contact RF MEMS switches. The capacitor banks show a very high quality factor at 4K. As well, a single-port-double-throw switch is developed and measured as the building block for switch matrices, showing extremely low insertion loss, and tunable resonators are presented that implement both varactors and dc-contact RF MEMS switches as the tuning elements. The resonators are extremely miniaturized, with a size of [lambda]o/1600, and tunable filters are developed and characterized using these resonators. While niobium-based RF MEMS can be integrated within the niobium-layers of the SME technology, designers often do not have the flexibility to select the thickness of the MEMS structural layers. Also, since the fabrication process of SME technology is not specifically designed for MEMS technology, there are limitations in designing more reliable RF MEMS devices. A novel niobium-based micro-fabrication process is developed to integrate gold-based MEMS structures with niobium-based RF circuits. This method benefits from the very low-loss characteristic of superconducting metal niobium while implementing a more matured technology for MEMS structures. An 8-mask fabrication process is developed that allows the monolithic integration of superconducting niobium-based RF circuits with gold-based MEMS structures. By developing this fabrication method, many low-loss and high quality factor tunable RF devices can be achieved. The challenge is to maintain the quality of the niobium metal layer so that there is no degradation in the critical temperature of the niobium after going through all of the 8-mask process steps. Niobium RF devices integrated with gold-based dc-contact and capacitive-contact RF MEMS switches are fabricated and characterized on alumina substrates using the proposed fabrication process. All devices demonstrate insertion loss reduction due to the superconducting nature of niobium. The measurements of coplanar waveguide transmission lines and low-pass filters demonstrate that the critical temperature of the niobium metal layer is not degraded during the process steps. A capacitor bank is designed, fabricated and characterized showing a very high quality factor. Finally, two types of niobium tunable bandpass filters are presented that employ gold-based dc-contact RF MEMS switches as the tuning elements.
Author : Joel A. Kubby
Publisher : Cambridge University Press
ISBN 13 : 1139498800
Total Pages : 195 pages
Book Rating : 4.1/5 (394 download)
Download or read book A Guide to Hands-on MEMS Design and Prototyping written by Joel A. Kubby and published by Cambridge University Press. This book was released on 2011-08-25 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether you are a student taking an introductory MEMS course or a practising engineer who needs to get up to speed quickly on MEMS design, this practical guide provides the hands-on experience needed to design, fabricate and test MEMS devices. You will learn how to use foundry multi-project fabrication processes for low-cost MEMS projects, as well as computer-aided design tools (layout, modeling) that can be used for the design of MEMS devices. Numerous design examples are described and analysed, from fields including micro-mechanics, electrostatics, optical MEMS, thermal MEMS and fluidic MEMS. There's also a final chapter on packaging and testing MEMS devices, as well as exercises and design challenges at the end of every chapter. Solutions to the design challenge problems are provided online.
Author : Jacopo Iannacci
Publisher :
ISBN 13 : 9780750315432
Total Pages : 172 pages
Book Rating : 4.3/5 (154 download)
Download or read book Rf-mems Technology for High-performance Passives written by Jacopo Iannacci and published by . This book was released on 2018-01-17 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the intrinsic potential of RF‑MEMS technology with specific focus on 5G mobile communications and services. Commencing with a review of the characteristics of RF‑MEMS in relation to the specifications of interest for 5G, the book proceeds to develop practical insight concerning the design and development of RF‑MEMS including case studies of design concepts. Including multiphysics simulation and animations, the book will be essential reading for both academic and industrial researchers and engineers.
Download or read book Lifetime Characterization of Capacitive Power RF MEMS Switches written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: RF MEMS switches provide a low-cost, high performance solution to many RF/microwaveapplications and these switches will be importantbuilding blocks for designing phase shifters, switchedfilters and reflector array antennas for military andcommercial markets. In this paper, progress in characterizing of THALEScapacitive MEMS devices under high RF power ispresented. The design, fabrication and testing ofcapacitive RF MEMS switches for microwave/mm- waveapplications on high-resistivity silicon substrate ispresented .The switches tested demonstrated powerhandling capabilities of 1W (30 dbm) for continuous RFpower. The reliability of these switches was tested atvarious power levels indicating that under continuousRF power. In addition a description of the powerfailures and their associated operating conditions ispresentedThe PC-based test stations to cycle switches and measurelifetime under DC and RF loads have been developed. Best-case lifetimes of 1010 cycles have been achieved inseveral switches from different lots under 30 dbm RFpower.
