Modeling Design And Fabrication Of Mems Filters For Rf Applications
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Modeling Design And Fabrication Of Mems Filters For Rf Applications
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Author : Siamak Fouladi Azarnaminy
language : en
Publisher:
Release Date : 2005
Modeling Design And Fabrication Of Mems Filters For Rf Applications written by Siamak Fouladi Azarnaminy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Currently, micro electro mechanical systems (MEMS) technology has been used in the fabrication and development of several micro devices which cover a broad range of applications. One of these application areas is the telecommunication industry. Current multi-band communication systems depend on off-chip components for frequency selection stages. Since the fabrication of these off-chip components are not compatible with IC fabrication, the electrical connection has to be in the board level, increasing the cost, size and system complexity. Recently MEMS technology has been used in constructing tunable IC components for RF and wireless transceivers, such as resonators, variable capacitors and inductors. These on-chip components can be utilized to implement system on chip (SOC) transceiver architectures with a better performance. This project is focused on modeling, design, and fabrication of band-pass filters for RF applications using MEMS components. The first class of filters is based on MEMS resonators covering a frequency range from 1MHz to 10MHz and the second class of filters use RF MEMS tunable capacitors. The project has two main parts; the first part is dedicated to the behavioral modeling and generating macro models for MEMS resonators that will be used in system level simulation of the final filter, and the second part discusses the design, fabrication, and post processing of both the MEMS resonators and MEMS variable capacitor, besides the experimental results.
Mems Resonator Filters
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Author : Rajendra M. Patrikar
language : en
Publisher: Institution of Engineering and Technology
Release Date : 2020-06-15
Mems Resonator Filters written by Rajendra M. Patrikar and has been published by Institution of Engineering and Technology this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-15 with Technology & Engineering categories.
The use of MEMS resonators for signal processing is relatively new and has the potential to change the topology of newer generation circuits. New materials, design and fabrication processes, and integration with conventional circuitry will need to be considered. This book explores the challenges and opportunities of developing circuits with MEMS resonator filters. The replacement of classical electrical components with electromechanical components is explored in this book, and the specific properties of MEMS resonators required in various frequency ranges are discussed. Materials and their selection, CAD tools for system design and the integration of MEMS with CMOS circuitry, and the design, fabrication, testing and packaging of MEMS filters themselves are addressed in detail. Case studies where resonator MEMS have been used as components have been included to encourage readers to consider the practical applications of this technology. MEMS Resonator Filters is essential reading for the analogue circuit designer community, particularly those who are designing circuits for wireless communications, and CMOS technology researchers and engineers who are involved in the fabrication of circuits. Designers of sensors and interfacing circuits will also be interested since resonators are also being used as sensors.
Microstrip Filters For Rf Microwave Applications
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Author : Jia-Sheng Hong
language : en
Publisher: John Wiley & Sons
Release Date : 2011-01-06
Microstrip Filters For Rf Microwave Applications written by Jia-Sheng Hong 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 2011-01-06 with Technology & Engineering categories.
The first edition of “Microstrip Filters for RF/Microwave Applications” was published in 2001. Over the years the book has been well received and is used extensively in both academia and industry by microwave researchers and engineers. From its inception as a manuscript the book is almost 8 years old. While the fundamentals of filter circuits have not changed, further innovations in filter realizations and other applications have occurred with changes in the technology and use of new fabrication processes, such as the recent advances in RF MEMS and ferroelectric films for tunable filters; the use of liquid crystal polymer (LCP) substrates for multilayer circuits, as well as the new filters for dual-band, multi-band and ultra wideband (UWB) applications. Although the microstrip filter remains as the main transmission line medium for these new developments, there has been a new trend of using combined planar transmission line structures such as co-planar waveguide (CPW) and slotted ground structures for novel physical implementations beyond the single layer in order to achieve filter miniaturization and better performance. Also, over the years, practitioners have suggested topics that should be added for completeness, or deleted in some cases, as they were not very useful in practice. In view of the above, the authors are proposing a revised version of the “Microstrip Filters for RF/Microwave Applications” text and a slightly changed book title of “Planar Filters for RF/Microwave Applications” to reflect the aforementioned trends in the revised book.
Filter Design Solutions For Rf Systems
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Author : Leonardo Pantoli
language : en
Publisher: MDPI
Release Date : 2020-11-19
Filter Design Solutions For Rf Systems written by Leonardo Pantoli and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-19 with Technology & Engineering categories.
This Special Issue focuses on the state-of-the-art results from the definition and design of filters for low- and high-frequency applications and systems. Different technologies and solutions are commonly adopted for filter definition, from electrical to electromechanical and mechanical solutions, from passive to active devices, and from hybrid to integrated designs. Aspects related to both theoretical and experimental research in filter design, CAD modeling and novel technologies and applications, as well as filter fabrication, characterization and testing, are covered. The proposed research articles deal with different topics as follows: Modeling, design and simulation of filters; Processes and fabrication technologies for filters; Automated characterization and test of filters; Voltage and current mode filters; Integrated and discrete filters; Passive and active filters; Variable filters, characterization and tunability.
Rf Mems Circuit Design For Wireless Communications
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Author : Héctor J. de los Santos
language : en
Publisher: Artech House
Release Date : 2002
Rf Mems Circuit Design For Wireless Communications written by Héctor J. de los Santos and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Computers categories.
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.
Mems Based Circuits And Systems For Wireless Communication
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Author : Christian C Enz
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-21
Mems Based Circuits And Systems For Wireless Communication written by Christian C Enz 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 2012-08-21 with Technology & Engineering categories.
MEMS-based Circuits and Systems for Wireless Communications provides comprehensive coverage of RF-MEMS technology from device to system level. This edited volume places emphasis on how system performance for radio frequency applications can be leveraged by Micro-Electro-Mechanical Systems (MEMS). Coverage also extends to innovative MEMS-aware radio architectures that push the potential of MEMS technology further ahead. This work presents a broad overview of the technology from MEMS devices (mainly BAW and Si MEMS resonators) to basic circuits, such as oscillators and filters, and finally complete systems such as ultra-low-power MEMS-based radios. Contributions from leading experts around the world are organized in three parts. Part I introduces RF-MEMS technology, devices and modeling and includes a prospective outlook on ongoing developments towards Nano-Electro-Mechanical Systems (NEMS) and phononic crystals. Device properties and models are presented in a circuit oriented perspective. Part II focusses on design of electronic circuits incorporating MEMS. Circuit design techniques specific to MEMS resonators are applied to oscillators and active filters. In Part III contributors discuss how MEMS can advantageously be used in radios to increase their miniaturization and reduce their power consumption. RF systems built around MEMS components such as MEMS-based frequency synthesis including all-digital PLLs, ultra-low power MEMS-based communication systems and a MEMS-based automotive wireless sensor node are described.
Design And Realizations Of Miniaturized Fractal Microwave And Rf Filters
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Author : Pierre Jarry
language : en
Publisher: John Wiley & Sons
Release Date : 2009-11-09
Design And Realizations Of Miniaturized Fractal Microwave And Rf Filters written by Pierre Jarry 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 2009-11-09 with Technology & Engineering categories.
An in-depth survey of the design and REALIZATIONS of miniaturized fractal microwave and RF filters Engineers are continually searching for design methods that can satisfy the ever-increasing demand for miniaturization, accuracy, reliability, and fast development time. Design and Realizations of Miniaturized Fractal RF and Microwave Filters provides RF and microwave engineers and researchers, advanced graduate students, and wireless and telecommunication engineers with the knowledge and skills to design and realize miniaturized fractal microwave and RF filters. This book is an essential resource for the realization of portable and cellular phones, WiFi, 3G and 4G, and satellite networks. The text focuses on the synthesis and fabrication of miniaturized fractal filters with symmetrical and asymmetrical frequency characteristics in the C, X and Ku bands, though applications to other frequency bands are considered. Readers will find helpful guidance on: Miniaturized filters in bilevel fashion Simplified methods for the synthesis of pseudo-elliptic electrical networks Methods for extracting coupling coefficients and external quality factors from simulations of the RF/microwave structure Methods for matching theoretical couplings to couplings of structure Including studies of the real-world performance of fractal resonators and sensitivity analyses of suspended substrate realizations, this is a definitive resource for both practicing engineers and students who need timely insight on fractal resonators for compact and low-power microwave and RF applications.
Rf Mems And Their Applications
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Author : Vijay K. Varadan
language : en
Publisher: John Wiley & Sons
Release Date : 2003-07-25
Rf Mems And Their Applications written by Vijay K. Varadan 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 2003-07-25 with Technology & Engineering categories.
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.
Rf Mems Bandpass Filter
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Author : Noel M. Elman
language : en
Publisher:
Release Date : 2000
Rf Mems Bandpass Filter written by Noel M. Elman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Novel Rf Microelectromechanical Systems Tunable Filters With Adjustable Spurious Suppression
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Author : Vikram Sekar
language : en
Publisher:
Release Date : 2010
Novel Rf Microelectromechanical Systems Tunable Filters With Adjustable Spurious Suppression written by Vikram Sekar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
This thesis presents the theory and design of fixed and Radio Frequency (RF) Microelectromechanical Systems (MEMS) -based tunable microwave filters for RF and microwave applications. The methodology for the design of coupled resonator filters is explained in detail and is used to design an end-coupled microstrip filter at 1.5 GHz with inductive loading using a stepped microstrip discontinuity to lower the resonance frequency of the half-wavelength microstrip resonator. The fabricated endcoupled filter shows center frequencies of 1.36 GHz and 1.03 GHz in the unloaded and loaded state respectively, with insertion losses between 1.2-1.5 dB and return loss better than 10 dB in both states. The filter response shows spurious passbands at approximately twice the filter center frequencies. To overcome this problem and improve the upper rejection skirt of the filter, microstrip resonators with tapped input/output coupling and mixed inter-resonator coupling are used to suppress the spurious passband by introducing a transmission zero at spurious resonance frequency. Measurement results for the fabricated tapped-resonator filters show an improvement of the upper rejection skirt due to spurious suppression to a level of -40 dB, with insertion loss of 1.2-1.5 dB for the same center frequencies. The concepts developed from fabrication and measurement of fixed-tuned microstrip filters are used to design an inductively-loaded RF MEMS tunable filter with adjustable spurious suppression implemented using packaged metal-contact switches. The two-pole 5% filter has a tuning range of 17% from 1.06 GHz to 1.23 GHz with an insertion loss of 1.56-2.28 dB and return loss better than 13 dB over the tuning range. The inductive loading mechanism is used to tune the open-ended quarter wavelength stub such that a tunable transmission zero supresses the spurious resonance as the filter center frequency is tuned. The spurious passband response in both states is suppressed below -20 dB. The unloaded quality factor (Q) of the filter varies from 127 to 75 as the filter is tuned. The equivalent circuit model for the series metalcontact packaged RF MEMS switch used in the tunable filter is derived from full-wave electromagnetic simulations and used to predict the effect of MEMS switch parasitics on the overall performance of the tunable filter.