Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Rf Mems Varactor Based True Time Delay Line Technology For Phased Antenna Array Systems full books in PDF, epub, and Kindle. Read online Rf Mems Varactor Based True Time Delay Line Technology For Phased Antenna Array Systems ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Yaping Liang
Publisher :
ISBN 13 :
Total Pages : 412 pages
Book Rating : 4.:/5 (77 download)
Download or read book MEMS Based True Time Delay Lines for Phased Antenna Array Systems written by Yaping Liang and published by . This book was released on 2007 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Danqing Fu
Publisher :
ISBN 13 : 9781321608557
Total Pages : pages
Book Rating : 4.6/5 (85 download)
Download or read book RF MEMS Varactor-based True Time Delay Line Technology for Phased Antenna Array Systems written by Danqing Fu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few decades, the demand for energy has increased dramatically. Eventually, the limited reserves of fossil fuels, especially oil and gas, will no longer be able to accommodate the ever increasing energy demand. Clean and inexhaustible energy has long been a dream for the human race. Fusion energy stands out among the possible candidates for its self-sustainability and environmentally friendly nature. To realize that on our planet, the tokamak (toroidal chamber with magnetic coils) [1], a doughnut shaped vacuum chamber which contains the high temperature plasma, has become the most successful device thus far as regards magnetic confinement fusion. However, the fusion plasma is at extremely high temperature, which makes direct physical measurements impossible; consequently millimeter-wave imaging becomes a desirable technique for plasma diagnostics. There are many millimeter wave plasma diagnostic tools, but two popular and successful approaches pioneered at UC Davis are Electron Cyclotron Emission Imaging (ECEI) [2] and Microwave Imaging Reflectometry (MIR) [3] [4]. Microwave Imaging Reflectometry (MIR) System is a radar technique used to infer the electron density characteristics by probing the density-dependent cutoff layer in plasmas. A phased Antenna Array is proposed to employ as an electronically controlled focusing and defocusing array, and function as an electronically controlled "lens". In this dissertation, the author focuses on the design of extended tuning range RF MEMS varactors, which can prevent the so-called "pull-in" effect of traditional MEMS structures. Consequently, the capacitance ratio could be increased dramatically and large phase delay (360 °) could be realized. Initially, the MEMS pull-in effect together with structures which could prevent the pull-in effect, and a comparison among them are introduced. Subsequently, the fixed-fixed beam's electromagnetic simulations in HFSS, mechanical simulations in CoventorWare, and optimization of the S parameters in ADS are presented. After that, a six layer micro-fabrication process is introduced, and fabrication problems and solutions are illustrated. The measurement results of a fixed-fixed beam are analyzed, and then a cantilever beam is designed to replace the fixed-fixed beam to solve the residual stress problem. Simulation results, fabrication processes, fabrication problems, solutions, and measurement results are then presented. Finally, analog phase delay which exceeds 360 ° is realized in both Q band and V band. In Q band, the measured insertion losses range from 5 dB to 9 dB in the intermediate-states and down-states, and only less than 2 dB in the up-states, and the measured return losses are better than 7 dB in all states. In addition, in V band, the measured insertion losses range from 9 dB to 12 dB in the intermediate-states and down-states, and only less than 2 dB in up-states, and the measured return losses are better than 9 dB in all states.
Author : Spartak Gevorgian
Publisher : Springer Science & Business Media
ISBN 13 : 1848825072
Total Pages : 405 pages
Book Rating : 4.8/5 (488 download)
Download or read book Ferroelectrics in Microwave Devices, Circuits and Systems written by Spartak Gevorgian and published by Springer Science & Business Media. This book was released on 2009-05-30 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today’s wireless communications and information systems are heavily based on microwave technology. Current trends indicate that in the future along with - crowaves, the millimeter wave and Terahertz technologies will be used to meet the growing bandwidth and overall performance requirements. Moreover, motivated by the needs of the society, new industry sectors are gaining ground; such as wi- less sensor networks, safety and security systems, automotive, medical, envir- mental/food monitoring, radio tags etc. Furthermore, the progress and the pr- lems in the modern society indicate that in the future these systems have to be more user/consumer friendly, i. e. adaptable, reconfigurable and cost effective. The mobile phone is a typical example which today is much more than just a phone; it includes a range of new functionalities such as Internet, GPS, TV, etc. To handle, in a cost effective way, all available and new future standards, the growing n- ber of the channels and bandwidth both the mobile handsets and the associated systems have to be agile (adaptable/reconfigurable). The complex societal needs have initiated considerable activities in the field of cognitive and software defined radios and triggered extensive research in adequate components and technology platforms. To meet the stringent requirements of these systems, especially in ag- ity and cost, new components with enhanced performances and new functionalities are needed. In this sense the components based on ferroelectrics have greater - tential and already are gaining ground.
Author : Edward Neil Toughlian
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (88 download)
Download or read book A Photonic Variable RF Delay Line for Filtering and True Time Delay Phased Array Applications written by Edward Neil Toughlian and published by . This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Pei Hsia
Publisher :
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.:/5 (58 download)
Download or read book Microwave and Millimeter-wave Radar and Imaging Array Technology and Applications written by Richard Pei Hsia and published by . This book was released on 1998 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mike Golio
Publisher : CRC Press
ISBN 13 : 142000672X
Total Pages : 736 pages
Book Rating : 4.4/5 (2 download)
Download or read book RF and Microwave Passive and Active Technologies written by Mike Golio and published by CRC Press. This book was released on 2018-10-03 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the high frequency world, the passive technologies required to realize RF and microwave functionality present distinctive challenges. SAW filters, dielectric resonators, MEMS, and waveguide do not have counterparts in the low frequency or digital environment. Even when conventional lumped components can be used in high frequency applications, their behavior does not resemble that observed at lower frequencies. RF and Microwave Passive and Active Technologies provides detailed information about a wide range of component technologies used in modern RF and microwave systems. Updated chapters include new material on such technologies as MEMS, device packaging, surface acoustic wave (SAW) filters, bipolar junction and heterojunction transistors, and high mobility electron transistors (HMETs). The book also features a completely rewritten section on wide bandgap transistors.
Author : Michael Wickham
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (373 download)
Download or read book Low-Loss Fiber-Optic True Time Delay Generator for RF Signal Processing and Phased Array Antenna Control (TTD). written by Michael Wickham and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work established the viability of a fiber-optic approach for low-loss true time delay of wideband RF signals for phased-array antenna (PAA) beamsteering. In this approach an optical carrier modulated by the RF signal of interest is launched into a delay-line fiber composed of optical Bragg reflection gratings written holographically into the core of a single-mode fiber. The beam is steered by tuning the optical carrier wavelength for reflection from the appropriate grating. The fiber Bragg grating writing performance meets and exceeds PAA requirements. We demonstrated: (1) a time delay accuracy of approximately 2 ps (20 Ps verified); (2) a wavelength writing accuracy for Bragg gratings of 0.04 microns absolute, 0.01 nm relative; (3) a sidelobe suppression of 50 dBe at 2 nm channels and 60 dBe at 3 nm channels. We produced a 4-bit, 16 grating true time delay element which includes an optical circulator. An analytical model, which includes chirp, was developed that predicts both the optical and RF response for the fiber optic Bragg grating.
Author : Mike Golio
Publisher : CRC Press
ISBN 13 : 1439833230
Total Pages : 2208 pages
Book Rating : 4.4/5 (398 download)
Download or read book The RF and Microwave Handbook - 3 Volume Set written by Mike Golio and published by CRC Press. This book was released on 2018-10-08 with total page 2208 pages. Available in PDF, EPUB and Kindle. Book excerpt: By 1990 the wireless revolution had begun. In late 2000, Mike Golio gave the world a significant tool to use in this revolution: The RF and Microwave Handbook. Since then, wireless technology spread across the globe with unprecedented speed, fueled by 3G and 4G mobile technology and the proliferation of wireless LANs. Updated to reflect this tremendous growth, the second edition of this widely embraced, bestselling handbook divides its coverage conveniently into a set of three books, each focused on a particular aspect of the technology. Six new chapters cover WiMAX, broadband cable, bit error ratio (BER) testing, high-power PAs (power amplifiers), heterojunction bipolar transistors (HBTs), as well as an overview of microwave engineering. Over 100 contributors, with diverse backgrounds in academic, industrial, government, manufacturing, design, and research reflect the breadth and depth of the field. This eclectic mix of contributors ensures that the coverage balances fundamental technical issues with the important business and marketing constraints that define commercial RF and microwave engineering. Focused chapters filled with formulas, charts, graphs, diagrams, and tables make the information easy to locate and apply to practical cases. The new format, three tightly focused volumes, provides not only increased information but also ease of use. You can find the information you need quickly, without wading through material you don’t immediately need, giving you access to the caliber of data you have come to expect in a much more user-friendly format.
Author : Weikang Zhang
Publisher :
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.:/5 (65 download)
Download or read book Quasi-optical MEMS Switching Array Technology written by Weikang Zhang and published by . This book was released on 2002 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vijay K. Varadan
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.3/5 (91 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 with total page 416 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 : Yu Albert Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book RF MEMS switches and phase shifters for three-dimensional MMIC phased array antenna systems written by Yu Albert Wang and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew A. Morton
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (173 download)
Download or read book Development of Monolithic SiGe and Packaged RF MEMS High-linearity Five-bit High-low Pass Phase Shifters for SoC X-band T/R Modules written by Matthew A. Morton and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of the High-pass/Low-pass topology has been performed, increasing the understanding of error sources arising from bit layout issues and fabrication tolerances. This included a detailed analysis of error sources in monolithic microwave phase shifters due to device size limitations, inductor parasitics, loading effects, and non-ideal switches. Each component utilized in the implementation of a monolithic high-low pass phase shifter was analyzed, with its influence on phase behavior shown in detail. An emphasis was placed on the net impact on absolute phase variation, which is critical to the system performance of a phased array radar system. The design of the individual phase shifter filter sections, and the influence of bit ordering on overall performance was also addressed. A variety of X-band four- and five-bit phase shifters were fabricated in a 200 GHz SiGe HBT BiCMOS technology platform, and further served to validate the analysis and design methodology. The SiGe phase shifter can be successfully incorporated into a single-chip T/R module forming a system-on-a-chip (SoC). Reduction in the physical size of transmission lines was shown to be a possibility with spinel magnetic nanoparticle films. The signal transmission properties of phase lines treated with nanoparticle thin films were examined, showing the potential for significant size reduction in both delay line and High-pass/Low-pass phase topologies. Wide-band, low-loss, and near-hermetic packaging techniques for RF MEMS devices were presented. A thermal compression bonding technique compatible with standard IC fabrication techniques was shown, that uses a low temperature thermal compression bonding method that avoids plastic deformations of the MEMS membrane. Ultimately, a system-on-a-package (SoP) approach was demonstrated that utilized packaged RF MEMS switches to maintain the performance of the SiGe phase shifter with much lower loss. The extremely competitive performance of the MEMS-based High-pass/Low-pass phase shifter, despite the lack of the extensive toolkits and commercial fabrication facilities employed with the active-based SiGe phase shifters, confirms both the effectiveness of the detailed phase error analysis presented in this work and the robust nature of the High-pass/Low-pass topology.
Author : Gabriel M. Rebeiz
Publisher : Wiley-Interscience
ISBN 13 : 9780471201694
Total Pages : 512 pages
Book Rating : 4.2/5 (16 download)
Download or read book RF MEMS written by Gabriel M. Rebeiz and published by Wiley-Interscience. This book was released on 2003-02-24 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 : Raed Ali M. Almhmadi
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (12 download)
Download or read book Optical True Time Delay Device for Mm-Wave Antenna Array Beamforming written by Raed Ali M. Almhmadi and published by . This book was released on 2019 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an example to demonstrate the potential benefits of this novel phenomenon, a 11 um long device consisting of 30 unit cells is introduced that provides 730-times slower group velocity as compared to free space. This true time delay device can be used for UWB beamforming at 60GHz by incorporating a tunable delay device with each antenna element. This topology provides ±60o beam scanning over extremely large bandwidths while maintaining small footprint and continuous beam scanning provided by voltage tuning of the delay makes it ideal for 5G and automotive radar applications.
Author : Yikun Yu
Publisher : Springer Science & Business Media
ISBN 13 : 9400706626
Total Pages : 123 pages
Book Rating : 4.4/5 (7 download)
Download or read book Integrated 60GHz RF Beamforming in CMOS written by Yikun Yu and published by Springer Science & Business Media. This book was released on 2011-01-06 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated 60GHz RF Beamforming in CMOS describes new concepts and design techniques that can be used for 60GHz phased array systems. First, general trends and challenges in low-cost high data-rate 60GHz wireless system are studied, and the phased array technique is introduced to improve the system performance. Second, the system requirements of phase shifters are analyzed, and different phased array architectures are compared. Third, the design and implementation of 60GHz passive and active phase shifters in a CMOS technology are presented. Fourth, the integration of 60GHz phase shifters with other key building blocks such as low noise amplifiers and power amplifiers are described in detail. Finally, this book describes the integration of a 60GHz CMOS amplifier and an antenna in a printed circuit-board (PCB) package.
Author : Warren L. Stutzman
Publisher : John Wiley & Sons
ISBN 13 : 0470576642
Total Pages : 848 pages
Book Rating : 4.4/5 (75 download)
Download or read book Antenna Theory and Design written by Warren L. Stutzman and published by John Wiley & Sons. This book was released on 2012-05-22 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stutzman's 3rd edition of Antenna Theory and Design provides a more pedagogical approach with a greater emphasis on computational methods. New features include additional modern material to make the text more exciting and relevant to practicing engineers; new chapters on systems, low-profile elements and base station antennas; organizational changes to improve understanding; more details to selected important topics such as microstrip antennas and arrays; and expanded measurements topic.
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
