Download or read book Millimeter wave Generation with Electron beam Devices written by Bernhard Kulke and published by . This book was released on 1966 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Possible Uses of Plasma for Millimeter Wave Generation written by Robert E. McIntosh and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical and Experimental Investigation of Electron Beam Acceleration and Sub Millimeter Wave Generation written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of our research for ARO is to develop devices that have the potential for being compact generators of submillimeter-wave radiation. (1) The high-harmonic gyro-frequency multiplier, which is an efficient generator of high frequency rf, will be tested at the tenth-harmonic in our rebuilt test-stand. (2) High-power harmonic gyro-TWTs can be designed to operate in high order modes in large size waveguide by using the marginal stability design criterion. (3) Our high power, second-harmonic TE2 1 gyro-TWT, which is predicted to generate an order of magnitude higher power than state-of- the-art fundamental frequency gyrotrons, has been fully designed and construction is well underway. (4) The interaction strength in our high-harmonic CARM increases as the electron Larmor radius moves closer to the wall radius as the magnetic field is lowered towards a grazing intersection. (5) A high performance amplifier is predicted to result from our initial gyro-klystron experiment ... Submillimeter-wave radiation, Compact generators, Frequency multiplication, High-harmonic, Gyro-TWT, Stability.
Download or read book Modern Microwave and Millimeter Wave Power Electronics written by Gregory S. Nusinovich and published by John Wiley & Sons. This book was released on 2005-04-19 with total page 885 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of microwave vacuum electronic devices and their current and future applications While both vacuum and solid-state electronics continue to evolve and provide unique solutions, emerging commercial and military applications that call for higher power and higher frequencies to accommodate massive volumes of transmitted data are the natural domain of vacuum electronics technology. Modern Microwave and Millimeter-Wave Power Electronics provides systems designers, engineers, and researchers-especially those with primarily solid-state training-with a thoroughly up-to-date survey of the rich field of microwave vacuum electronic device (MVED) technology. This book familiarizes the R&D and academic communities with the capabilities and limitations of MVED and highlights the exciting scientific breakthroughs of the past decade that are dramatically increasing the compactness, efficiency, cost-effectiveness, and reliability of this entire class of devices. This comprehensive text explores a wide range of topics: Traveling-wave tubes, which form the backbone of satellite and airborne communications, as well as of military electronic countermeasures systems Microfabricated MVEDs and advanced electron beam sources Klystrons, gyro-amplifiers, and crossed-field devices "Virtual prototyping" of MVEDs via advanced 3-D computational models High-Power Microwave (HPM) sources Next-generation microwave structures and circuits How to achieve linear amplification Advanced materials technologies for MVEDs A Web site appendix providing a step-by-step walk-through of a typical MVED design process Concluding with an in-depth examination of emerging applications and future possibilities for MVEDs, Modern Microwave and Millimeter-Wave Power Electronics ensures that systems designers and engineers understand and utilize the significant potential of this mature, yet continually developing technology. SPECIAL NOTE: All of the editors' royalties realized from the sale of this book will fund the future research and publication activities of graduate students in the vacuum electronics field.
Download or read book Infrared and Millimeter Waves written by Kenneth Button and published by Elsevier. This book was released on 2012-12-02 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Millimeter Waves, Volume 1: Sources of Radiation explores modern sources of radiation available for use in the far-infrared and near-millimeter wavelength range of the spectrum. This book describes the operating principles and comparative performances of all three types of device: electron tubes, solid state devices, and optically pumped lasers. This volume is comprised of seven chapters; the first of which reviews the developments in the design and construction of high-power, high-efficiency millimeter sources and in the nonlinear theory for cyclotron masers. The second chapter deals with IMPATT devices for millimeter-wave power generation, with emphasis on device physics design considerations as well as cw and pulsed operations of IMPATT oscillators and amplifiers at millimeter frequencies. The chapters that follow focus on optically pumped lasers, backward wave oscillators, the Ledatron, and infrared and submillimeter-wave waveguides. This book concludes with a discussion on free electron lasers based on stimulated scattering from relativistic electron beams. An original reformulation of stimulated scattering theory that attempts to encompass all previous treatments is described and compared with available experimental data. This text also presents a semi-qualitative analysis of nonlinear saturation. This book will appeal to scientists and professional engineers.
Download or read book Generation and Application of High Power Microwaves written by R.A Cairns and published by CRC Press. This book was released on 2020-08-17 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written at the graduate level, Generation and Application of High Power Microwaves discusses the basic physics of the generation of microwave and radiofrequency waves in the megawatt power range and the application of these ideas to a range of devices such as klystrons, gyrotrons, and free electron lasers. The book also contains chapters covering the transmission of the power through waveguides and the problems associated with mode conversion in transmission lines. The main application area covered is the heating and current drive in tokamaks and other devices for research into controlled nuclear fusion. Other applications of high power microwave technology are not neglected, and among those discussed are multiple charged ion and soft x-ray sources, electron spin resonance spectroscopy, advanced materials processing, millimeter wave radar, and supercolliders.
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.
Download or read book Linear Electron Accelerator for Submillimeter Wave Generation written by Stanford University. Microwave Laboratory and published by . This book was released on 1964 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Type of Fast Wave Interaction for Generation of Millimeter Waves written by Stanford University. Microwave Laboratory and published by . This book was released on 1964 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observation of High power Millimeter Wave Emission from a Virtual Cathode written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Intense bursts of mm wave power have been observed in microwave generation experiments with a relativistic electron beam (REB) virtual cathode oscillator. In this device an electron beam is injected into a drift space at a current above the space-charge-limit, and a potential develops downstream which is large enough to reflect electrons back to the source region. Two mechanisms can give rise to microwave oscillations in a virtual cathode device: electrons reflexing between the real and virtual cathodes, and oscillations in the amplitude and position of the virtual cathode. Typically both mechanisms are present, but in the present experiments reflexing has been shown to be dominant.
Download or read book Proposed Millimeter Wave Generator written by Stanford University. Microwave Laboratory and published by . This book was released on 1959 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1963 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical and Experimental Investigation of Electron Beam Acceleration and Sub Millimeter Wave Generation in Cyclotron Resonant Cavities written by N. C Luhmann (Jr) and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high energy, axis-encircling electron beam produced by our TE sub 111 gyro-resonant accelerator has been used to drive two varieties of high cyclotron harmonic amplifiers, the high harmonic gyro-klystron and the high harmonic gyro-TWT. The gyro-klystron has been tested in three configurations. The first was a simple two cavity gyro-klystron where the energy of the rotating beam is modulated in the buncher cavity. Bunches develop in the drift tuve and radiate in the catcher cavity. The fifth harmonic device yielded a gain of 20 dB and a saturated power of 90 W.A multi-cavity system can be expected to yielded considerably more gain because intermediate cavities will enhance the bunch formation. Using the same overall length as the two cavity device, the four cavity gyro-klystron yielded a gain of 37 dB, but saturated at roughly the same output power.
Download or read book Infrared and Millimeter Waves V11 written by Kenneth J. Button and published by Elsevier. This book was released on 1984-12-28 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Millimeter Waves, Volume 11: Millimeter Components and Techniques, Part III compiles the work of several authors while focusing on certain aspects of infrared and millimeter waves, such as sources of radiation, instrumentation, and millimeter systems. This volume covers millimeter components and techniques. The first chapter is a review of indium phosphide and gallium arsenide transferred-electron devices, while the next chapter covers nonradiative dielectric waveguide. Chapter 3 discusses groove guide for short millimetric waveguide systems. This book then tackles the application of oversized cavities for millimeter-wave spectroscopy, and Chapter 5 discusses powerful gyrotrons. Chapter 6 covers some perspectives on operating frequency increase in gyrotrons; Chapter 7 covers phase noise and AM noise measurement in the frequency domain. The last chapter discusses the basic design considerations for free-electron lasers driven by electron beams from rf. This book will be of great use to researchers or professionals whose work involves infrared and millimeter waves.
Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Microwave and Millimeter Wave Technologies written by Moumita Mukherjee and published by BoD – Books on Demand. This book was released on 2010-03-01 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is planned to publish with an objective to provide a state-of-the-art reference book in the areas of advanced microwave, MM-Wave and THz devices, antennas and systemtechnologies for microwave communication engineers, Scientists and post-graduate students of electrical and electronics engineering, applied physicists. This reference book is a collection of 30 Chapters characterized in 3 parts: Advanced Microwave and MM-wave devices, integrated microwave and MM-wave circuits and Antennas and advanced microwave computer techniques, focusing on simulation, theories and applications. This book provides a comprehensive overview of the components and devices used in microwave and MM-Wave circuits, including microwave transmission lines, resonators, filters, ferrite devices, solid state devices, transistor oscillators and amplifiers, directional couplers, microstripeline components, microwave detectors, mixers, converters and harmonic generators, and microwave solid-state switches, phase shifters and attenuators. Several applications area also discusses here, like consumer, industrial, biomedical, and chemical applications of microwave technology. It also covers microwave instrumentation and measurement, thermodynamics, and applications in navigation and radio communication.
