Millimeter Wave To Terahertz Vacuum Electron Beam Devices

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Millimeter Wave to Terahertz Vacuum Electron Beam Devices

Author : Anisullah Baig
Publisher :
ISBN 13 : 9781303537622
Total Pages : pages
Book Rating : 4.5/5 (376 download)

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Book Synopsis Millimeter Wave to Terahertz Vacuum Electron Beam Devices by : Anisullah Baig

Download or read book Millimeter Wave to Terahertz Vacuum Electron Beam Devices written by Anisullah Baig and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The millimeter wave to THz region (0.1 - 1 THz) of the electromagnetic spectrum possesses unique properties which lead to potential applications ranging from non-intrusive security, high data rate communications, medical imaging, and industrial quality control. However, the unavailability of oscillators/amplifiers with adequate power in a compact package has led to the expression "THz Gap". Microwave Vacuum Electron Device (MVED) technology is considered by many to be the most promising approach for a THz source. The main focus of this dissertation has been in conjunction with the DARPA (Defense Advanced Research Project Agency) HiFIVE (High Frequency Integrated Vacuum Electronics) 220 GHz program. Some supportive work has also been conducted in support of W-band Sheet Beam Klystron and 94 GHz Gyrotron development efforts. A complete MEMS (micro-electro-mechanical-systems) process was developed to precision fabricate micro-metallic staggered vane waveguides 400 [mu]m tall and with the shortest cavity of 75 [mu]m in a single layer process. MEMS fabricated 220 GHz, Traveling Wave Tube Amplifier (TWTA) circuits were demonstrated with unprecedented results of RF transmission S21 ~ - 6 dB in a pass band 214 - 266 GHz, corresponding to a bandwidth > 50 GHz. 3D electromagnetic wave, particle dynamics and beam-wave interaction simulation codes were utilized for realistic device design and modeling of fabrication errors. Cold test measurements were conducted in the frequency range 160 - 280 GHz to characterize the TWT circuits using both a backward wave oscillator based scalar network analyzer and Agilent PNA-X. Hot test experiments were conducted for the 220 GHz TWTA with (a) no RF input, for zero drive stability analysis and (b) with RF drive. Millimeter wave frequency and power calibration/measurement techniques were employed to analyze the lower (2[pi])/upper (3[pi]) cutoff oscillations. TWTA gain was measured as a function of frequency and collector current. For the next generation compact, PCM (permanent cusp magnet) integrated TWTA approach, the complete assembly, including 220 GHz TWT circuit (19.5 kV, 200 mA), permanent magnets (NdFeB) based sheet beam transport, and RF windows was designed. The Nano-CNC fabrication has been completed and PCM is being assembled.

Design and Modeling of Microwave and Millimeter-wave Vacuum Electronic Devices

Author : HsinLu Hsu
Publisher :
ISBN 13 :
Total Pages : 530 pages
Book Rating : 4.:/5 (74 download)

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Book Synopsis Design and Modeling of Microwave and Millimeter-wave Vacuum Electronic Devices by : HsinLu Hsu

Download or read book Design and Modeling of Microwave and Millimeter-wave Vacuum Electronic Devices written by HsinLu Hsu and published by . This book was released on 2006 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Design of Quasi-optical Components for Millimeter to THz Vacuum Electron Beam Devices

Author : John Jiang Yan
Publisher :
ISBN 13 : 9781267760364
Total Pages : pages
Book Rating : 4.7/5 (63 download)

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Book Synopsis Design of Quasi-optical Components for Millimeter to THz Vacuum Electron Beam Devices by : John Jiang Yan

Download or read book Design of Quasi-optical Components for Millimeter to THz Vacuum Electron Beam Devices written by John Jiang Yan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the emergence of high power, millimeter wave sources operating at 94 GHz and 220 GHz with output powers in excess of 10 kW and 50 W, respectively, creates a critical need to route and process these powers efficiently. Since fundamental mode waveguides become unreasonably lossy and run into the breakdown regime to handle these associated powers when operating at the millimeter wave to terahertz regime, quasi-optical techniques, which utilize higher beam modes and common optical techniques, are employed. Such techniques typically require stringent mode control and call for intercoupling wave propagation analysis to minimize mode conversion. These complicated analysis techniques stretch the capabilities of traditional differential equation formulations typically employed to analysis complex structures in the microwave regime. Additionally, these structures become electrically large due to the shrinking associated wavelengths of the propagating waves in the millimeter wave to terahertz spectrum making such analysis difficult-to-impossible under 'normal' computing conditions. To intelligently design and manufacture these components, the multiphysics behavior of these devices must be carefully understood. As a result, circuit models and quick solver methodologies are presented and used to analyze these electrically large systems. As a result of careful signal integrity engineering, quasi-optical components and systems are designed and the experimental results are presented to extract empirical values, benchmark numerical solutions, and for practical use. As a result of these studies, one can conclude that quasi-optical signal processing and overmoded transmission line systems are essential to efficiently process the high powers fields radiating from the described vacuum electron beam devices for next generation telecommunication, remote sensing, scientific instrumentation, and electronic warfare systems.

Microwave and Millimeter-Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling-Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons

Download Microwave and Millimeter-Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling-Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons PDF Online Free

Author : A.S. Gilmour, Jr.
Publisher : Artech House
ISBN 13 : 1630817295
Total Pages : 880 pages
Book Rating : 4.6/5 (38 download)

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Book Synopsis Microwave and Millimeter-Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling-Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons by : A.S. Gilmour, Jr.

Download or read book Microwave and Millimeter-Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling-Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons written by A.S. Gilmour, Jr. and published by Artech House. This book was released on 2020-04-30 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an internationally recognized as an expert on the subject of microwave (MW) tubes, this book presents and describes the many types of microwave tubes, and despite competition from solid-state devices (those using GaN, SiC, et cetera), which continue to be used widely and find new applications in defense, communications, medical, and industrial drying. Helix traveling wave tubes (TWTs), as well as coupled cavity TWTs are covered. Klystrons, and how they work, are described, along with the physics behind it and examples of devices and their uses. Vacuum electron devices are explained in detail and examines the harsh environment that must exist in tubes if they are to operate properly. The secondary emission process and its role in the operation of crossed-field devices is also discussed. The design of collectors for linear-beam tubes, including power dissipation and power recovery, are explored. Discussions of important noise sources and techniques that can be used to minimize their effects are also included. Presented in full color, this book contains a balance of practical and theoretical material so that those new to microwave tubes as well as experienced microwave tube technicians, engineers, and managers can benefit from its use.

Microfabricated Traveling Wave Tubes for High Power Millimeter-Wave and THz-regime Sources

Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Microfabricated Traveling Wave Tubes for High Power Millimeter-Wave and THz-regime Sources by :

Download or read book Microfabricated Traveling Wave Tubes for High Power Millimeter-Wave and THz-regime Sources written by and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The millimeter-wave (MMW) and terahertz (THz)-regime portions of the electromagnetic spectrum have enormous application potential, including high-data-rate communications, remote sensing and threat detection, high resolution radar, biomedical imaging, and spectroscopic analysis. To exploit this potential, new sources of coherent electromagnetic radiation are needed in the frequency range of 100 - 1000 GHz. The ideal sources would provide high power with high efficiency in a compact, lightweight, and low-cost package. Many of the applications require bandwidths of several percent (relative) or greater and both amplifiers and oscillators are needed. Vacuum electronic devices, such as traveling wave tubes (TWTs) meet many of these requirements but are constrained by complex fabrication methods that become impractical at frequencies of 100 GHz and above. This research is investigating new methods for TWT fabrication, derived from semiconductor microfabrication technologies. Various microfabrication techniques are under investigation, to identify those that are optimally suited. One critical piece of research is to measure the passive microwave losses of a 400 GHz waveguide made by these microfabrication methods. The final goal includes a study of the characteristics of a microfabricated TWT using a new electron-beam source designed for MMW and THz-regime vacuum device research.

Convergence of Terahertz Sciences in Biomedical Systems

Author : Gun-Sik Park
Publisher : Springer Science & Business Media
ISBN 13 : 9400739648
Total Pages : 428 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Convergence of Terahertz Sciences in Biomedical Systems by : Gun-Sik Park

Download or read book Convergence of Terahertz Sciences in Biomedical Systems written by Gun-Sik Park and published by Springer Science & Business Media. This book was released on 2012-10-19 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent technological breakthrough in the field of Terahertz radiation has triggered new applications in biology and biomedicine. Particularly, biological applications are based on the specific spectroscopic fingerprints of biological matter in this spectral region. Historically with the discovery of new electromagnetic wave spectrum, we have always discovered new medical diagnostic imaging systems. The use of terahertz wave was not realized due to the absence of useful terahertz sources. Now after successful generation of THz waves, it is reported that a great potential for THz wave exists for its resonance with bio-molecules. There are many challenging issues such as development of THz passive and active instrumentations, understanding of THz-Bio interaction for THz spectroscopy, THz-Bio nonlinear phenomena and safety guideline, and THz imaging systems. Eventually the deeper understanding of THz-Bio interaction and novel THz systems enable us to develop powerful THz biomedical imaging systems which can contribute to biomedical industry. This is a truly interdisciplinary field and convergence technology where the communication between different disciplines is the most challenging issue for the success of the great works. One of the first steps to promote the communications in this convergence technology would be teaching the basics of these different fields to the researchers in a plain language with the help of Convergence of Terahertz Science in Biomedical Systems which is considered to be 3-4th year college students or beginning level of graduate students. Therefore, this type of book can be used by many people who want to enter or understand this field. Even more it can be used for teaching in universities or research institutions.

Terahertz Sensing Technology - Vol 1: Electronic Devices And Advanced Systems Technology

Author : Michael S Shur
Publisher : World Scientific
ISBN 13 : 9814486302
Total Pages : 360 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Terahertz Sensing Technology - Vol 1: Electronic Devices And Advanced Systems Technology by : Michael S Shur

Download or read book Terahertz Sensing Technology - Vol 1: Electronic Devices And Advanced Systems Technology written by Michael S Shur and published by World Scientific. This book was released on 2003-07-14 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last research frontier in high frequency electronics now lies in the so-called THz (or submillimeter-wave) regime between the traditional microwave and infrared domains. Significant scientific and technical challenges within the terahertz (THz) frequency regime have recently motivated an array of new research activities. During the last few years, major research programs have emerged that are focused on advancing the state of the art in THz frequency electronic technology and on investigating novel applications of THz frequency sensing. This book serves as a detailed reference for the new THz frequency technological advances that are emerging across a wide spectrum of sensing and technology areas.

Modern Millimeter-wave Technologies

Author : Tasuku Teshirogi
Publisher : IOS Press
ISBN 13 : 9781586030988
Total Pages : 318 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Modern Millimeter-wave Technologies by : Tasuku Teshirogi

Download or read book Modern Millimeter-wave Technologies written by Tasuku Teshirogi and published by IOS Press. This book was released on 2001 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text covers the study of millimeter-waves from the basics to the state-of-the-art devices and application systems.

Vacuum Nanoelectronic Devices

Author : Anatoliy Evtukh
Publisher : John Wiley & Sons
ISBN 13 : 1119037964
Total Pages : 472 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Vacuum Nanoelectronic Devices by : Anatoliy Evtukh

Download or read book Vacuum Nanoelectronic Devices written by Anatoliy Evtukh and published by John Wiley & Sons. This book was released on 2016-03-16 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing up-to-date coverage of research in electron field emission from nanostructures, Vacuum Nanoelectronic Devices outlines the physics of quantum nanostructures, basic principles of electron field emission, and vacuum nanoelectronic devices operation, and offers as insight state-of-the-art and future researches and developments. This book also evaluates the results of research and development of novel quantum electron sources that will determine the future development of vacuum nanoelectronics. Further to this, the influence of quantum mechanical effects on high frequency vacuum nanoelectronic devices is also assessed. Key features: • In-depth description and analysis of the fundamentals of Quantum Electron effects in novel electron sources. • Comprehensive and up-to-date summary of the physics and technologies for THz sources for students of physical and engineering specialties and electronics engineers. • Unique coverage of quantum physical results for electron-field emission and novel electron sources with quantum effects, relevant for many applications such as electron microscopy, electron lithography, imaging and communication systems and signal processing. • New approaches for realization of electron sources with required and optimal parameters in electronic devices such as vacuum micro and nanoelectronics. This is an essential reference for researchers working in terahertz technology wanting to expand their knowledge of electron beam generation in vacuum and electron source quantum concepts. It is also valuable to advanced students in electronics engineering and physics who want to deepen their understanding of this topic. Ultimately, the progress of the quantum nanostructure theory and technology will promote the progress and development of electron sources as main part of vacuum macro-, micro- and nanoelectronics.

Advances in Terahertz Source Technologies

Author : Gun-Sik Park
Publisher : CRC Press
ISBN 13 : 1000995453
Total Pages : 773 pages
Book Rating : 4.0/5 (9 download)

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Book Synopsis Advances in Terahertz Source Technologies by : Gun-Sik Park

Download or read book Advances in Terahertz Source Technologies written by Gun-Sik Park and published by CRC Press. This book was released on 2024-04-16 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past several decades, tremendous progress has been made in terahertz (THz) science and technology. There is a continuing need to have terahertz waves ready for practical applications. Terahertz photonic and electronic devices are being readied to be employed in application systems such as communication links, satellite communications, radar, surveillance, hard/soft material heating, biomedical treatment, and biomedical diagnostics. This book focuses on the advances in terahertz source technologies both from photonics and electronics (solid-state and vacuum-state) points of view. Written in a noncomplicated language, the book will be useful for a broad spectrum of readers, including advanced undergraduate- and graduate-level students in electronics and photonics, researchers in various disciplines in physics, chemistry, biology, astronomy, and electrical engineering, system engineers in various industrial sectors, general readers, and those who are interested in the interaction between electromagnetic waves and matters and in the effects of electromagnetic waves on matters.

State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021. (KIT Scientific Reports ; 7761)

Author : Thumm, Manfred
Publisher : KIT Scientific Publishing
ISBN 13 :
Total Pages : 158 pages
Book Rating : 4./5 ( download)

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Book Synopsis State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021. (KIT Scientific Reports ; 7761) by : Thumm, Manfred

Download or read book State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021. (KIT Scientific Reports ; 7761) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2021-10-28 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an update of the experimental achievements published in the review “State- of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared, Millime-ter, and Terahertz Waves, 41, No. 1, pp 1-140 (2020) related to the development of gyro-devices (Tables 2-34). Emphasis is on high-power gyrotron oscillators for long-pulse or continuous wave (CW) operation and pulsed gyrotrons for any applications.

State-of-the-Art of High-Power Gyro-Devices - Update of Experimental Results 2023 (KIT Scientific Reports ; 7765)

Author : Thumm, Manfred
Publisher : KIT Scientific Publishing
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4./5 ( download)

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Book Synopsis State-of-the-Art of High-Power Gyro-Devices - Update of Experimental Results 2023 (KIT Scientific Reports ; 7765) by : Thumm, Manfred

Download or read book State-of-the-Art of High-Power Gyro-Devices - Update of Experimental Results 2023 (KIT Scientific Reports ; 7765) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2024-02-06 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an update of the experimental achievements published in the review “State- of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared, Millimeter, and Terahertz Waves, 41, No. 1, pp 1-140 (2020) and in the KIT Scientific Report 7761 (2021), related to the development of gyro-devices (Tables 2-34). Emphasis is on high-power gyrotron oscillators for long-pulse or continuous wave (CW) operation and pulsed gyrotrons for any applications.

Modern Developments in Vacuum Electron Sources

Author : Georg Gaertner
Publisher : Springer Nature
ISBN 13 : 3030472914
Total Pages : 609 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Modern Developments in Vacuum Electron Sources by : Georg Gaertner

Download or read book Modern Developments in Vacuum Electron Sources written by Georg Gaertner and published by Springer Nature. This book was released on 2020-10-09 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters – the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future trends.

Terahertz Technology

Author : T. Anukiruthika
Publisher : CRC Press
ISBN 13 : 1000914372
Total Pages : 290 pages
Book Rating : 4.0/5 (9 download)

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Book Synopsis Terahertz Technology by : T. Anukiruthika

Download or read book Terahertz Technology written by T. Anukiruthika and published by CRC Press. This book was released on 2023-08-22 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores broader applications of the THz regime in the agri-food sector Describes system components, different forms of THz systems, and the working principle of THz waves for spectroscopic and imaging techniques Provides insights on future research needs for industrial implementation of THz technology Complements the knowledge of other existing non-destructive spectroscopy and imaging techniques for food analysis

State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2016 (KIT Scientific Reports ; 7735)

Author : Thumm, Manfred
Publisher : KIT Scientific Publishing
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4./5 ( download)

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Book Synopsis State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2016 (KIT Scientific Reports ; 7735) by : Thumm, Manfred

Download or read book State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2016 (KIT Scientific Reports ; 7735) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2017-07-19 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2015 (KIT Scientific Reports ; 7717)

Author : Thumm, Manfred
Publisher : KIT Scientific Publishing
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4./5 ( download)

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Book Synopsis State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2015 (KIT Scientific Reports ; 7717) by : Thumm, Manfred

Download or read book State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2015 (KIT Scientific Reports ; 7717) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2016-08-29 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2017 (KIT Scientific Reports ; 7750)

Author : Thumm, Manfred
Publisher : KIT Scientific Publishing
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4./5 ( download)

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Book Synopsis State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2017 (KIT Scientific Reports ; 7750) by : Thumm, Manfred

Download or read book State-of-the-Art of High Power Gyro-Devices and Free Electron Masers. Update 2017 (KIT Scientific Reports ; 7750) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2018-06-04 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: