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A Novel Quasioptical Gyrotron Traveling Wave Amplifier
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Book Synopsis Theory and Design Study of a Novel Quasi-optical Gyrotron Traveling Wave Amplifier by : Jagadishwar Rao Sirigiri
Download or read book Theory and Design Study of a Novel Quasi-optical Gyrotron Traveling Wave Amplifier written by Jagadishwar Rao Sirigiri and published by . This book was released on 2000 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Quasioptical Gyrotron Traveling Wave Amplifier by : Jagadishwar Rao Sirigiri
Download or read book A Novel Quasioptical Gyrotron Traveling Wave Amplifier written by Jagadishwar Rao Sirigiri and published by . This book was released on 2002 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) A gyrotron oscillator experiment with an overmoded open confocal resonator was also run at a peak power of up to 83 kW at 136 GHz with an efficiency of 16%. The gyrotron oscillator experiment had excellent mode stability which makes an oversized quasioptical open confocal resonator a candidate for use in high frequency millimeter and sub-millimeter wave gyrotrons. A second harmonic confocal gyrotron experiment was also tried at 280 GHz but the poor quality electron beam prevented the generation of the second harmonic, however, the stronger fundamental mode interaction was suppressed thus validating the advantages of using confocal resonators in high harmonic gyrotrons to suppress the stronger fundamental interaction. The experiments on three millimeter wave VEDs with two novel kinds of highly oversized interaction structures described in this work have demonstrated a novel technique for building high power (> 1 kW) high frequency (> 100 GHz) VEDs.
Book Synopsis Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers by : Chao-Hai Du
Download or read book Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers written by Chao-Hai Du and published by Springer. This book was released on 2014-05-29 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar. The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported via concise states and vivid pictures. The book is likely to meet the interest of researchers and engineers in radar and microwave technology, who would like to study the gyro-TWTs and to promote its application in millimeter-wave radars. Chao-Hai Du and Pu-Kun Liu are both professors at Peking University.
Download or read book Smith, Dan written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Wideband Gyrotron Travelling Wave Amplifier by : Jagadishwar Rao Sirigiri
Download or read book A Novel Wideband Gyrotron Travelling Wave Amplifier written by Jagadishwar Rao Sirigiri and published by . This book was released on 2003 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The successful operation of this high frequency gyrotron suggests that overmoded PBG resonators can also be used in conventional slow-wave devices to build moderate power (few hundreds of Watts) VEDs in the millimeter and sub-millimeter wave regime for a variety of applications. A gyrotron oscillator experiment with an overmoded open confocal resonator was also run at a peak power of up to 83 kW at 136 GHz with an efficiency of 16 %. The gyrotron oscillator experiment had excellent mode stability which makes an oversized quasioptical open confocal resonator a candidate for use in high frequency millimeter and sub-millimeter wave gyrotrons. A second harmonic confocal gyrotron experiment was also tried at 280 GHz but the poor quality electron beam prevented the generation of the second harmonic, however, the stronger fundamental mode interaction was suppressed thus validating the advantages of using confocal resonators in high harmonic gyrotrons to suppress the stronger fundamental interaction. The experiments on three millimeter wave VEDs with two novel kinds of highly oversized interaction structures described in this work have demonstrated a novel technique for building high power (> 1 kW) high frequency (> 100 GHz) VEDs.
Book Synopsis Theory of Gyrotron Traveling Wave Amplifiers at Harmonics of the Gyration Frequency by : Qiangfa Li
Download or read book Theory of Gyrotron Traveling Wave Amplifiers at Harmonics of the Gyration Frequency written by Qiangfa Li and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Microwave and Millimeter-Wave Power Electronics by : Gregory S. Nusinovich
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.
Book Synopsis Development of a W-band TE01 Gyrotron Traveling-wave Amplifier (gyro-TWT) for Advanced Radar Applications by : Hoyoung Song
Download or read book Development of a W-band TE01 Gyrotron Traveling-wave Amplifier (gyro-TWT) for Advanced Radar Applications written by Hoyoung Song and published by . This book was released on 2004 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Wideband 140 GHz Gyrotron Amplifier by : Colin D. Joye
Download or read book A Novel Wideband 140 GHz Gyrotron Amplifier written by Colin D. Joye and published by . This book was released on 2008 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory, design and experimental results of a wideband 140 GHz, 1 kW pulsed gyro-traveling wave amplifier are presented. The gyro- TWA operates in the HE(0,6) mode of a novel cylindrical confocal waveguide using a gyrating electron beam. The electromagnetic theory, interaction theory, design processes and experimental procedures have been described in detail. The experiment has produced over 820 W peak power, 34 dB linear gain, and a -3 dB bandwidth of over 1.5 GHz (1.1%) from a 37 kV, 2.7 A electron beam having a beam pitch factor of 0.6, radius of 1.9 mm and calculated perpendicular momentum spread of approximately 9%. The gyro-amplifier was nominally operated at a pulse length of 2 microseconds, but was tested to amplify pulses as short as 4 nanoseconds with no noticeable pulse broadening. Internal reflections in the amplifier were identified using these short pulses by time-domain reflectometry. A novel internal mode converter was designed for this device that transforms the confocal HE(0,6) fields into a fundamental Gaussian beam for ultra-low loss transmission of the millimeter wave output power through a corrugated transmission line. The demonstrated performance of this amplifier shows that it can be applied to Dynamic Nuclear Polarization (DNP) and Electron Paramagnetic Resonance (EPR) spectroscopy.
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.
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.
Book Synopsis Multi-megawatt Relativistic Harmonic Gyrotron Traveling-wave Tube Amplifier Experiments by : William Libbey Menninger
Download or read book Multi-megawatt Relativistic Harmonic Gyrotron Traveling-wave Tube Amplifier Experiments written by William Libbey Menninger and published by . This book was released on 1996 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Single Wave Simulation of the Gyrotron Traveling Wave Amplifier Operating at Cyclotron Harmonics by : K. R. Chu
Download or read book Theory and Single Wave Simulation of the Gyrotron Traveling Wave Amplifier Operating at Cyclotron Harmonics written by K. R. Chu and published by . This book was released on 1978 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cyclotron maser interaction in a waveguide structure at the harmonics of the cyclotron frequencies has been studied in detail both analytically and with numerical simulations. An idealized cold beam, single wave model has been assumed and investigated using the relativistic Vlasov and Maxwell equations. Analytical scaling relations for the growth rate and efficiency have been derived and extensive simulation data obtained. Emphasis has been placed on methods of parameter optimization for maximizing beam to wave energy conversion efficiency. Beam frame efficiencies in the vicinity of 20% and 10% have been found for the third and fourth cyclotron harmonics, respectively. These results are capable of yielding preliminary design data for gyrotron traveling wave amplifiers. However, it should be noted that a number of important practical problems such as competition between spurious modes have not been considered in the context of the present single wave analysis. Furthermore, requirements on magnetic field uniformity and electron thermal spread become more stringent as cyclotron harmonic number increases and thus the realization of suitable experimental conditions may be expected to become increasingly difficult. (Author).
Book Synopsis A Gyrotron-Traveling-Wave Tube Amplifier Experiment with a Ceramic Loaded Interaction Region by :
Download or read book A Gyrotron-Traveling-Wave Tube Amplifier Experiment with a Ceramic Loaded Interaction Region written by and published by . This book was released on 2002 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and experimental study of a 35-GHz gyrotron-traveling-wave tube (gyro-TWT) amplifier operating in the circular TE01 mode at the fundamental cyclotron harmonic are presented. The interaction circuit in this experiment consisted of a new type of ceramic loading that provided the required loss for stable operation. A saturated peak power of 137 kW was measured at 34.1 GHz, corresponding to a saturated gain of 47.0 dB and an efficiency of 17%, with a -3-dB bandwidth of 1.11 GHz (3.3%). Peak output powers in the range of 102.1 to 148.6kW with -3-dB bandwidths of 1.26 and 0.94 GHz, respectively, were measured by varying the operating parameters. The gyro-TWT was found to be zero-drive stable at these operating points, demonstrating that ceramic loading is a highly effective means of suppressing spurious oscillations in gyro-TWTs. This type of ceramic loading has the added advantage of being compatible with high average power operation.
Book Synopsis The Traveling Wave Amplifier as a Bistable Oscillator by : Linual Dale Smithey
Download or read book The Traveling Wave Amplifier as a Bistable Oscillator written by Linual Dale Smithey and published by . This book was released on 1956 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
